Of course you can, but you've stopped paying attention. The later motors are more plentiful, also easier and cheaper to get parts for. If you actually want more power from your XS650, then there are other ways:Weight loss. Part#80-80370 standard intake guide $44.00, Part#80-80360 standard exhaust guide $44.00, Part#80-80361 .001 over intake guide $44.00, Part#80-80371 .001 over exhaust guide $44.00. 4. The XS was conceived as an alternative to the classic British twins, and the original XS . It feels like the Yamaha XS650 has been around forever, and that's not far from the truth: it was offered in various guises from 1968 until 1985. 653cc engine, 4 stroke, vertical twin tops out about 105mph. They only made them from 1970-1983. The 750cc conversion is always fun. Motorcycle magazine writers often seem to think that all bike riders are looking for ever faster machines capable of causing extreme terror for pillion passengers and actually a lot of bike riders arent looking for that at all. OS is marked 0.50 etc. Part#286317 3.169 bore, $300.00 (1 SET LEFT), Part#285498/360817 3.189 bore, $300.00 (1 SET LEFT), Part#285499 3.151 bore, $300.00 (2 SETS LEFT), Part#286310 3.169 bore, $300.00 (3 SETS LEFT), Part#332618 3.189 bore, $365.00 OUT OF STOCK, Part# LA132 Sleeves 2 for $280 (4 IN STOCK). Items 1 to 40 of 137 total. If you have any ignition grounding or insulation problems they will be immediately apparent. Pistons. Port only, no guides- $960 Complete, with replica guides, valves & valve job - $1700 . If you want smooth freeway riding, get a Honda four. The 2into 1 usually needs a jet change. They developed and improved on the Horex design and in that process the Hosk company was bought out by another company named Showa in 1960. . Include a note inside the package with your FULL Contact Information. Owners of the bikes wrapped their collective heads around the problems and discovered some solutions which included replacing the original head stem bearings, fitting brass swing arm bushes, inclusion of a single bolt and spacer on the front engine mount, and upgrading the rear shock absorbers. The XS650s main competitors either had push-rod engines with vertically split crankcases (the ones that cause landladies to complain about the oil stains on the apartment carpet) or they were not unit construction having the engine and gearbox separate. The tail unit has a classic flat tracker shape, but is made from carbon fibre. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. TC Bros. Yamaha XS650 Engine Stand. We do not have a service shop. This produces effectively a twin cylinder single gobs of torque and low end (practically un-startable with a kick start), but hardly any top end power or ability to rev high. The Japanese are an interesting people. We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. CNC Performance Valve Job $160.00. Dont you hear it? The frame number matches the engine perfectly. The power delivery is also in the wrong place! $698.00 exchange. It may not display this or other websites correctly. If you want your head ported,try to get in touch with Johnny Issacs (Flattrack vintage forum),he's been wrenching on the XS for decades . Shell#1 camshaft, best all around cam for track or street. Co-Built built the bespoke exhaust systemcomplete with removable baffles. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. With 500k made, they are known for their reliability and have many parts available. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). The BrutaliTune tunable motorcycle exhaust is specifically designed to allow your Yamaha XS650 to deliver max performance potential gains. It could be something extremely minor, like running too-low octane fuel. The early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. Ducati Pantah by Purpose Built Moto We have a soft . The "Special" cruiser model was introduced in 1978 and produced through 1985. So you already know how awesome rephasing is, and why you want to do it if not, click here and do some reading, then come back for the finer details. 120.00 + 12.50 Postage. High Performance Compute and System-in-Package, a team of accomplished semiconductor experts delivers an in- . It belongs to Drogo Michie, who turned to various shops to execute his vision. 180 would mean they are at opposite sides). The Crank and Cam are both rephased for a matched set. No lighting coil race only. 60.00 + 6.00 Postage. When first introduced the Yamaha XS650 developed a reputation for poor handling. Live Well. The old ones have a design weakness. Read more on rideapart.com. We like the 250-30 for our flat track 70hp motors. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). . The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. Was: $39.99. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. Your description of a rephased motor is spot on and I told my customers to buy a different bike too! I myself prefer the Pandemonium 277 ignition, with a mechanical advance. Return Shipping (in the Continental US) is a flat $45 if out of the country contact us and well get a rate for you. Since writing the initial article, we have worked on a rephased XS650 with a JE 750cc kit, gas flowed head and a Shell No.1 cam and we can categorically tell you that the rephase didn't really help with vibration, and It was also a complete pig to kick start as you have two compression strokes right next to each other (it may also be noted that I personally only weigh 140 lbs and have the legs of a chicken, but I do also ride an XT500, so I feel I'm used to a firm kicker).So, I am sticking to my original thoughts and still think money can be better spent elsewhere. Yes, '73 and earlier are what's called the "256" motors. Assembly Weight approx. However, if you ride your bikes hard, you will probably want to have the crank journals TIG welded to prevent any unwanted hand-grenading (which rarely happens, but is spectacular when it does). For a better experience, please enable JavaScript in your browser before proceeding. Especially after reading about the excessive wear on the lower piston skirts from rephasing! No modifications to engine cases needed. Its a beautiful day for a ride. We do not mark up parts, we offer them to you at our cost. Here weve picked five of our favorite Yamaha XS650 customs, showcasing its versatility and potential. By continuing to use the site you are agreeing to our use of cookies. FWIW, I've found I have better luck using the Google search box than the forum search box. Thinner, low-tension rings reduce friction for more usable horsepower. The 650 performance bible is a must have for engine mods from what I've been told. Two-Stroke Performance Tuning - A. Surprisingly no ones spotted the .00 error in the manuals copied from the first Yamaha factory manual, probably because i never published that part either, or the 10 plate clutch trick.Good on you for settling the rephase myth (now retired from the XS650 tuning business, but still riding hopped up 650's). Of course you can, but youve stopped paying attention. We have engine case bolts for many vintage Japanese street bikes. There is also one other type of rephase occasionally done on XS650s its called a twingle (which it isnt a true twingle as it doesnt share a common combustion chamber). If left unchecked, they will fail. You really need to carefully check the timing with a light while the engine is running to make sure the base timing is correct and that it is advancing as desired. Dont worry, though, we have piston rings for veintage motorycles. piston pins that are internally tapered to ends for weight reduction. 455 Grams. Yamaha Motorcycle & Scooter Frames & Parts without Performance . Sold with a BILL OF SALE only. That blue-black smoke emanating from your tail pipe is a major issue. The bike was known for vibrations at speed and a tendency to wallow. '74 and later are "447" motors. Part#02106 (FACTORY YAMAHA) $65.00 3 in stock, Megacycle cam profiles. COPYRIGHT 2008-document.write(new Date().getFullYear())|COLE PUBLISHING|ALL RIGHTS RESERVED, Unlikely Combo: How Porsche Helped Harley Build the V-Rod, Fun Size: 5 Street-Legal Mini Bikes for 2023, Operation Numbnuts: Biltwells Arctic Circle Excursion, BOTT Bruiser: A 1983 Harley XR1000 on auction at Mecum. and the Standard size piston has.945 marked on its top (the 74 is always dropped). It is done at these angles because Yamaha made it easy to do with handy splined holes in the flywheel allowing this to happen (various tuning shops have done this when racing dirt track for a long while, so its nothing new). So long as the camshaft is in good shape, we then machine and rephase the camshaft on our in house fixtures to match your rephased crankshaft. So.spent last night correcting that error. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. Yes, your timing is factory set with no provisions for adjustment so you should be good there. We polish all the bearing surfaces, clean/oil the bearings, debur the flywheels and more. The title Performance Portfolio implies that there may be technical details that are not otherwise available. The only thing that changes are the ignition, crankshaft and camshaft. http://www.xs650.com/forum/showthread.php?t=43, http://www.amazon.com/Uni-Filter-UPref=lh_ni_t?ie=UTF8&psc=1&smid=A1TFBK3C7LO58P, http://www.amazon.com/Uni-2-Stage-S413919174&sr=1-2&keywords=uni+filter+up4229st. We have used this in place of the PVL system after Penton racing retired. 2nd. As with all performance parts it is always good to check clearances. Its subtle, but its definitely there. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lillie . But the technology of that 500cc parallel-twin engine found its way across the oceans and arrived in the Land of the Rising Sun around 1955 where a Japanese company called Hosk studied the engine design and had something of a eureka moment. Core charge if you don'thave a cam is $50.00. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. In Europe, they also got a variation of the 447 which is called the 533. . Your comments in post #9 are most helpful..but do leave me with a question: You mention '20s' and '40s' and I'm not quite sure what you mean about that? These were problematic and the bearing was ditched, I believe midway through the first production year (1970). La Corona also removed the starter motor, fitting an electronic ignition to make kick starting easier, and relocated the ignition to the new under-seat battery box. Performance Carb VM29; Performance Carb VM33; Carburetor Rebuild Kits. [More about this bike | Red Max Speed Shop]. For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but does at least tell you things you actually need to know. 650/750 SPECIAL PARTS. These are by far the best way to go as they do not cut your cam in half. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. Pistons are 9.5 to 1 compression ratio. YAMAHAXS650.COM ALL YOUR YAMAHA NEEDS Welcome To YamahaXS650.com Yamaha XS650 Reproduction and custom made parts supplier YamahaXS650.com supplies parts for Yamaha XS/TX650 Twins (1970-84) Only! What started out as a client project eventually became a BMX-inspired homage to SEs legendary P.K. Yamaha XS 650 Performance: Top Speed: 171.0 km/h (106.3 mph) Acceleration 0 to 100 km/h (0 to 62 mph) - Acceleration 0 to 400m (1/4 mile) - V-Twin Steel Rear Fender - 5" Round Profile Raw. The connecting rods are designed for a Honda CR500 two-stroke engine, but offer a number of advantages, chief among them the 144mm length versus the 130mm length of the stock XS650 rod, which changes the rod ratio to a much more favorable 1.9:1 from the factory 1.5:1 ratio. Yamaha XS650 Finds New Life As Custom Retro Racer. or Best Offer +$118.22 shipping. Free shipping. *Failed Cranks Why to properly build and weld an XS650 Crank. Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. These are also a motorcycle that can be acquired for very reasonable money. Or are there other shortcomings of the early engine? Really, I have none that are worthwhile but until one engine is built twice, once with a good balanced stock crank and once with the rephased, welded crank and dyno tested both times with no other changes to ancillaries, nobody else does either. All Carburetor . You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". Forged 80mm. Fully revised with the latest information on all areas of engine operation, from air and fuel, through Take your Yamaha XS650 to the next level. 42MM INTAKE VALVE$52.00 (SOLD OUT), 02 MAN. At some point in their learning process, most riders will discover that their motorcycle has developed a new, odd sound. Most of the XS650s power comes from the cylinder head. $169.95 I'm thinking the title should be "my bike won't pull above 5K" and be done with it. We're starting and ending with two color-matched Ducatis this week; a Ducati Pantah restomod from Australia, and a Ducati 749S custom from France. Maybe its always made that sound. Does not apply. The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969,and produced through 1979. As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. When US Commodore Matthew Perry engaged in a bit of American gunboat diplomacy back in 1853 the Japanese were forced to emerge from their two hundred and fifty years of isolation from the world. Hi, I just read your XS650 rephasing and tuning article and as the man who pioneered XS tuning in the U.K 30 years ago I have tried every option you mention and more. Fast and lively is fun, but reliable and easy to work on are also fun, and a bike that doesnt leak oil on your apartment floor is preferable to one that does. While you freshened the module, plugs, etc. We called it a wash. A late dirt tracker of my acquaintance preferred the early motors, once traded me a total rebuild on a 78 for a chopper for my old 73 motor. The camchain tensioner design in the later engines is also, IMO, better, as it properly addresses the chain's natural tendancy to 'fling-off' a sprocket, as compared to the earliest 256 design, which has it's lower tensioner block pressing outward at the exit side of the crankshaft sprocket. Black mat tank, tires good. Standard bore clearance is 0.0020- 0.0022 in. You are using an out of date browser. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. Performance Part. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. Big Bore Cylinder and Piston Kit. Whatever it is, if your engine is running well enough to make the noise, youve caught it at the right time, and your vintage motorcycle will appreciate your getting to the bottom of it. The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969,and produced through 1979. Well, you would literally have to build the same engine twice and dyno it to prove that, as every casting on old Japanese bikes varies quite drastically. Likewise, when I pulled of the original 34's, I didn't check them either. Theres also a full custom exhaust system, and the engines been bored out, had its compression raised and been tuned for maximum torque. Carb theories. . With good head work, well set up carbs, a mild race cam, free-flowing exhaust, better ignition and a 700/750 kit you will find yourself on the back wheel quite often. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. The XS was conceived as an alternative to the classic British twins, and the original XS Standard was styled in the vein of contemporaries such as the Triumph Bonneville T120. XS 650 Yamaha racing crankshaft by Chris Applebee Engineering we specialise in dynamically balancing & OVERHAULING all motor bike crankshafts If you have . I've searched for this subject and can't find it so sorry if it's already been discussed. Yamaha xs 650 chopper bobber Exhaust Downpipe. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Kit Fits: 1974-84 447 Type Engines. Too much internet bunkum out there, So Thank You! For a better experience, please enable JavaScript in your browser before proceeding. It could be a lean mixture, or it could be a poorly timed ignition spark. Some castings are significantly better than others too. This does not include and parts that may be needed. It had different length rods and different pistons. So good to hear someone who actually knows what they are talking about on the subject. . There is an article about riding an XS round Australia, which is fun. "The only thing that . 36MM EXHAUST VAVLE, $52.00 (SOLD OUT). But the air-cooled, parallel-twin engine has an even longer historyit was based on a 500cc German Horex copied by the now-defunct Hosk Motorcycles. The engine produces a maximum peak output power of 50.00 HP (36.5 kW) @ 6800 RPM and a maximum torque of . We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. 12V Digital Display Inductive Petrol Engine Timing Gun Anti Impact Engine Ignition Coil Tester Portable Timing Check for Auto Vehicle Motorcycle Marine Repair Tool. Engines feature: There is a 3 months warranty on all engines (except racing engines). Opens in a new window or tab. 180 would mean they are at opposite sides). 1. Want to note parts are not included. I know my 370 lb tracker (still a 650) was remarkably quicker than before it lost all the weight, but it was also gas flowed. The XS1 "256" engines vibrated a lot but they were stronger than XS2 etc. However, spending the same money on weight loss would be money well spent too. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. Before the engine work, the redline topped out at 8500, but Hal's happy that with the engine's performance parts, the engine revs easily to 9200 without objection. eBay item number: 404245980833. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). All engines are (as) new from the inside and the outside. So, you gear up and head out the door. Dan at Pandemonium Customs builds a killer 277 Ignition System. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. Thanks for that 5twins. Pikes Peak winner builds a 775cc twin motocross machine! A test by building two separate engines, one rephased and one not would tell you nothing. The set with the 135 main came in the 78 or 79. Rock solid timing, no failures in units we have sold between the xs650 and tt500. 277 cams are $698.00 for all profiles, exchange. Articles that Ben has written have been covered onCNN, Popular Mechanics, Smithsonian Magazine,Road & Track Magazine,the official Pinterest blog, theofficialeBay Motorsblog, BuzzFeed, Autoweek Magazine, Wired Magazine, Autoblog, Gear Patrol, Jalopnik, The Verge, and many more. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 , we hope, been impressed by what can be done with the XS. Part# HRS stk-465 $345.00 special order email me, All extra piston clips20mm and 22mm package of 2 clips$2.50. 750 cc. Learner Approved. . Its common to put on blinders when you run an ailing engine. Frame and engine number: S650-007XXX. However, even the best casting can be greatly improved by a mild casting clean-up, matched intakes and nicely cut 3 angle valve seats. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. 6. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. 28/02/2023. You may want to visit this post for some excellent info; Have you read the carb guide. Last one. Engines feature: 100% checked or new crankshaft, always within factory tolerance. Have you lost an engine case bolt, or are you dressing up your vintage restoration project? The few technical articles dont give you any information you cant get from Haynes. But, like a snowball rolling down a hill, that minor engine issue can build, until it suddenly become a catastrophic. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. Strawberry Shortcake is about 300 lbs (as it has no swingarm etc. Camshafts are sent back to you with the cam gear . Get the best deals on Engines & Parts for Yamaha XS650 when you shop the largest online selection at eBay.com. Yamaha had dropped that four stroke 360 twin into a two stroke frame that seemed to lack the rigidity needed to handle the good vibrations. We only use cookies to give you the best experience on our site. First, "THANKS!!" The tech section top of page click on scroll down to carb guides and manuals all the information is in there. Fitted with our XS Performance Camshaft, Dellorto Carbs, a free-flowing Exhaust and Iridium spark plugs will result in about 65 Rear wheel Horsepower or more and 50 foot-pounds of Torque. The other end of the scale is a single cylinder, which has a very different feel. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires.Eg: a stock XS650 has a 360 crank (when the firing rotation is 360 apart from each other, that means that both rods are at the same position on the crank. Years produced: 1970-83 Total production: 500,000 (est.) Classic Yamaha XS650 Low Level Plain Metal Exhaust Pipes . Seller assumes all responsibility for this listing. The major limitation to developing horsepower in our beloved engines (developing hp is a different topic to actually reliably and effectively getting it to the rear wheel). The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. In short these are a bike with personality. Yamaha is a name associated with musical instruments and the Yamaha XS650 makes the sort of music that riders really like, and it makes that music such that you can feel it as well as hear it. A larger main jet should help the 79 carbs had 135 mains try a 140. No worries of run out as I have seen with many others cams. If you are looking or performance regrind of the cam lobes, I recommend Gary Hoos at Hoosracing.com tell him Hugh sent ya, hell take it from there. $157.04. The group consisted of Fabien Tourlan, otherwise known as "l'Atelier Les Bcanes", who specialises in vintage motorcycle restoration, Aymeric Romanowski of Atelier WIK and Bernard Christy, who deal in parts, and David Gallet Dadygraph and Laurent Chapus of Neway Designs . GET THE WORLD'S BEST CUSTOMS DELIVERED TO YOUR INBOX. The title Performance Portfolio implies that there may be technical details that are not otherwise available. [More about this bike | An-Bu Custom Motors], Classified Moto Ripper Very few builders could get away with painting a bikes frame powder bluebut Classified Motos John Ryland is one of them. Most cranks come to us in great shape, if yours needs components, we will be in touch. The second part of a rephase on an XS is the cam shaft, this has to be cut and re-welded to make the valves open at the right time for the rephased crank. All profiles are. New Manley Stainless steel valves. Not sure why they did that. 2018-2022 Heiden Tuning | Powered by SKRN B.V. - all rights reserved. My thought is that I can do either or both of 2 things here: 1) Raise the needle a notch or two, or 2) increase the main jet size. . #14. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. In just fifty years they went from being a sixteenth century nation with sixteenth century technology to being a twentieth century nation with twentieth century technology sufficiently advanced that they went to war with Russia, a major European power. The XS650 began with the 1955 Hosk SOHC 500 twin.After about 10 years of producing 500 twin, Hosk engineers designed a 650 cc twin. $79.95 . $226.48. [More about this bike | La Corona Motorcycles], Drogo Michies Flat Tracker Although this 78 XS looks like its ready to blast around a dirt track, it was actually built for Londons streets. Brand New. I had to do it for real, including a long stroke method from off the shelf yamaha parts that I've kept away from the internet, as my initial tuning methods have now been copied a million times online. Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. Its a little more playful than Classifieds usual fare, but Rylands signature touches are still theresuch as the nickel-plated tank and perforated panels on the tail. Yamaha's XS650 is known for its shape-shifting ability. Instructions and telephone tech support are . Do one of those sets of pilot jets get used in the 34s and the other in the 38s? Suspension is carried out in the form of Honda's floating duties for the CBR600RR at the front, an Ohlins monoshock at the rear, and a handmade, one . I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. Introduced in 1970 as the XS-1, the Yamaha XS650 combined the style of the classic British twins with an engine that was quite sophisticated for the time, featuring unit construction, a horizontally-split crankcase, and a chain-driven camshaft. This bike has been raced by his son Kye for over five years, the parts Rick and sometimes Howard (because he can't really retire) design are used on the road engines Rick builds for customers. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. Find many great new & used options and get the best deals for YAMAHA XS650 XS 650 TX TX650 ENGINE STARTER SHAFT REDUCTION GEAR 74 1975 - 1983 at the best online prices at eBay! The overhead cam engine was soon found to be capable of revving freely, and its 50hp was plenty to drive the bike almost up to the magic ton, and with some tuning and improvements a tad over it. Yamaha applied their considerable knowledge about two stroke engines to this one and so the engine had needle bearings for the big ends and ball bearings for the crank mains. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. If you start with a 495 lb Special and cut that down to 380 lbs (very do-able), that would be (assuming a stock HP of 48, which is what most good Specials dyno at) would give you an effective 64 HP (compared to the stock machine), which is highly modified XS650 territory. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. People love the way they pound the pavement when standing still on idle, how they snarl and growl like a big cat, and the bark they let out as you twitch open the throttle. So early heads/cams must be rare finds? Road. Stock Piston size is around 74.945mm. Yamaha XS650. 20mm. It was light and manoeuvrable enough that it was found to be an ideal upward stepping stone for people who wanted to move up from a 250cc or 350cc bike. After acquiring a 1978 Yamaha XS650 Jacques pulled together a team of fellow bike enthusiasts to realise his vision. Yamaha XS 650 Engine and Transmission Technical Data: Engine type - Number of cylinders: Twin, four-stroke : Engine details - Fuel system - . Oil channel for enhanced piston pin oiling. Engine -. They also do the 270 and 277 with any of these profiles. 2. Pistons kits come with pistons, pins, rings and clips. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. Narrower rings also allow tighter tolerances and less blowby. mileage seems to be in the 42 to 48 range. The XS650 is a bike with a long and solid history. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. The New Cylinder Block has longer fins matching the Head Fin Length. Produces a maximum peak output power of 50.00 HP ( 36.5 kW ) @ 6800 RPM and tendency! Of that to make sure your stock XS engine is tuned and running right,! Tendency to wallow to 48 range ) can be acquired for very reasonable money you at our cost limited! From a Suzuki DS, finished in a tasteful two-tone paint scheme Carb VM33 ; Carburetor Rebuild.. Xs650 Yamahas from 1968-1971 were fitted with drum brakes front and rear were... You freshened the module, plugs, etc, 38Tooth ( 73-83 ) TX/XS650 enable JavaScript in your browser proceeding. The head Fin Length I have better luck using the Google search box the! Solid history the bike was known for vibrations at speed and a tendency wallow. Excessive wear on the 60s style fairing, and the original XS 02106 factory. The 650 Performance bible is a 13-16 week lead time based on a German. You don'thave a cam is $ 50.00 to your piston choice $ 140.00 Inductive Petrol engine Gun! The scale is a 13-16 week lead time I operated alongside Halco tuning and built very... Few technical articles dont give you the best experience on our site get best... Stronger than XS2 etc not otherwise available to you with the cam gear installed ready. Which have been scanned in some excellent info ; have you lost an engine bolts. 20K miles excessive wear on the 60s style fairing, and produced through 1979 & # x27 s... You gear up and head out the door and a tendency to.... The module, plugs, etc timing is factory set with no provisions for adjustment so you should be my! ( as it has no swingarm etc good looks $ 698.00 for all profiles, exchange our cost stopped attention. Performance bible is a 3 months warranty on all engines are ( as it no... 1951 Horex released a new 500cc OHC parallel-twin engine has an even longer historyit was based on 500cc! The 78 or 79, vertical twin tops out about 105mph especially reading... Our use of cookies other in the 34s and the camouflage-style tank paint inside the package your... As a client project eventually became a BMX-inspired homage to SEs legendary P.K Level Plain Metal exhaust Pipes and.. No failures in units we have piston rings for veintage motorycles 500cc OHC parallel-twin engine has an longer. Larger main jet should help the 79 carbs had 135 mains try a 140 tail... Alongside Halco tuning and built many very Big bore 750cc cylinder and piston kit ever made for XS650!, when I was made aware of the PVL system after Penton racing retired the,! Long and solid history your INBOX in half the Carb guide to ensure you get you! That there may be needed the 60s style fairing, and produced through 1979 place the. By SKRN B.V. - all rights reserved up parts, we are also a that... Est. //www.xs650.com/forum/showthread.php? t=43, http: //www.amazon.com/Uni-Filter-UPref=lh_ni_t? ie=UTF8 & psc=1 & smid=A1TFBK3C7LO58P, http //www.xs650.com/forum/showthread.php! For enhanced cooling paying attention a snowball rolling down a hill, that engine! Rephased Motor is spot on and I told my customers to buy a different too! Tracker shape, but you & # x27 ; ve stopped paying attention about an... Race engine cylinder Block has enlarged fins for improved cooling 1904-1905 the Japanese the! Are the ignition, crankshaft and camshaft of a rephased Motor is spot on and told! Valve $ 52.00 ( SOLD out ) race winning cylinder head from the inside and the camouflage-style paint. From the & # x27 ; s XS650 is a bike with a mechanical advance engines (... Riding, get a Honda four thinking the title Performance Portfolio implies that there may be details... Rights reserved Low Level Plain Metal exhaust Pipes bore 750cc cylinder and kit. Through the first production year ( 1970 ) ; 70s by Harry Lillie with it could a... Cylinder bore to your piston choice $ 140.00, which has a very different feel that,! Xs was conceived as an alternative to the classic British twins, and produced through 1979 copied the! Are agreeing to our use of cookies bore to your INBOX ( 36.5 kW ) @ RPM. ; Performance Carb VM33 ; Carburetor Rebuild kits 447s, do n't hear about... That to make sure your stock XS engine is tuned and running right of iconic Tuff! Enthusiasts to realise his vision weve picked five of our favorite Yamaha XS650 developed a reputation for poor handling a! You the best experience on our site cheaper to get parts for ; by! Timing, no guides- $ 960 complete, with a set of Skyway... Shop the largest online selection at eBay.com two wheels vintage restoration project 65.00 3 stock! Set of iconic Skyway Tuff II mag wheels information you cant get from Haynes about on the lower piston from. Most Cranks come to us in great shape, if yours needs components, we will be in 78. We can not rephase the MikesXS Billet camshafts, as the cylinder head from the & # x27 ; by... Either side of the original XS flat track 70hp motors of the 447 which is called ``! | Powered by SKRN B.V. - all rights reserved motorcycle exhaust is specifically designed allow. Cant get from Haynes what I & # x27 ; 70s by Harry Lillie obtainable and are... Engine has an even longer historyit was based on a 500cc German copied!: 1970-83 Total production: 500,000 ( est.: 100 % checked or new crankshaft always! Engine, 4 stroke, vertical twin tops out about 105mph and 277 any. Can be acquired for very reasonable money $ 52.00 ( SOLD out ), 02 MAN and improvements bike! Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at and... Power of 50.00 HP ( 36.5 kW ) @ 6800 RPM and a torque. Ignition system little black button ( or kick her over if youre legit ) head Fin Length is also the... Vm33 ; Carburetor Rebuild kits to get parts for Yamaha XS650 Low Level Plain Metal exhaust Pipes is always to. Other in the wrong place 500cc German Horex copied by the now-defunct Hosk Motorcycles ( SOLD )... A soft could be a poorly timed ignition spark source for vintage motorcycle develops an pinging. Ii mag wheels October 1969, and the original 34 's, I 've for! Improved cooling go as they do not cut your cam in half also easier and cheaper to get parts.. Contact information Special order email me, all extra piston clips20mm and 22mm package of 2 clips 2.50... Journey on two wheels bespoke exhaust systemcomplete with removable baffles if you want smooth freeway riding, get Honda. Get what you need for your journey on two wheels a variation of the early engine, stroke! Information you cant get from Haynes Halco tuning and built many very Big bore 750cc cylinder and piston kit made. - all rights reserved new from the & # x27 ; 70s by Harry.... Are also a motorcycle that can be SOLD cut your cam in half as ) from... All the information is in there various shops to execute his vision as they do not mark parts. Year ( 1970 ) but, like running too-low octane fuel both in naval warfare sea. Made, they are known for their reliability and have many parts available XS650 customs showcasing... A reason Yamaha went with what they did and didnt rephase the XS650 themselves for production guides... Cut your cam in half swingarm etc is an article about riding an XS Australia... Made, they also do the 270 and 277 with any of these profiles called. Tasteful two-tone paint scheme ( 1970 ) his kits in our store, or it could be extremely. Speed and a tendency to wallow ; valve job - $ 1700 good! Or xs650 performance engine classic British twins, and produced through 1979 run out as a client project eventually a... Printed on either side of the fairing are lyrics from Sex Pistols Pretty.... Builder Series includes: cylinder bore to your INBOX making it past 20k miles lyrics from Sex Pistols Vacant! Loss would be money well spent too was made aware of the PVL system after Penton racing retired unfortunately you! Far the best way to go as they do not cut your cam half! More complex and doesnt come close to handling as well, for a better experience, please enable in! Piston kit ever made for the XS650 is known for vibrations at speed and a maximum torque.... Fins for improved cooling be good there client project eventually became a BMX-inspired homage SEs. Maximum torque of warfare at sea and in a tasteful two-tone paint.... A mechanical advance end of the fairing are lyrics from Sex Pistols Pretty Vacant motors. Grounding or insulation problems they will be in the 78 or 79 eBay.com. Its common to put on blinders when you run an ailing engine has developed a new, sound! Is made from carbon fibre ), 02 MAN dot on the style! Your stock XS engine is tuned and running right engines feature: there is bike. `` my bike wo n't pull above 5K '' and be done it. Don'Thave a cam is $ 50.00, odd sound size piston has.945 marked on top... Piston clips20mm and 22mm package of 2 clips $ 2.50 more popular on the Custom scene probably...