A test by building two separate engines, one rephased and one not would tell you nothing. Dan at Pandemonium Customs builds a killer 277 Ignition System. The New Cylinder Block has longer fins matching the Head Fin Length. 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). 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. Co-Built built the bespoke exhaust systemcomplete with removable baffles. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. Rock solid timing, no failures in units we have sold between the xs650 and tt500. No lighting coil race only. Pistons kits come with pistons, pins, rings and clips. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. It's subtle, but it's definitely there. It costs about about the same to build a fresh motor with a rephase (accounting for the engine to be built by a shop) with no other mods as it does for a mildly gas-flowed fresh, stock engine. OS is marked 0.50 etc. Putting your head in the sand is no way to be a responsible vintage motorcycle caretaker. Stock Piston size is around 74.945mm. No modifications to engine cases needed. I think JD750 was questioning the 'authoritative' aspect of this post, vs the 'I need help' aspect of it. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle Parts. Then the rephase idea cropped up, so I made a few. The problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. 455 Grams. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. If you are looking for a bike that can be had at a reasonable cost that has the personality to become a favoured companion for road adventures then a Yamaha XS650 could be just the bike you are looking for. 2. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. I don't know why. Not sure why they did that. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Some castings are significantly better than others too. This XS is built around a custom chromoly steel frame, with billet triple clamps housing the forks from a Honda CBR900RR. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. When first introduced the Yamaha XS650 developed a reputation for poor handling. No worries of run out as I have seen with many others cams. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. The crank is then ready to bolt in just like OEM. Limey Bikes, 900 Old Koenig Lane, Austin, TX 78752. I would wager (any amount) the gas-flowed one would dyno better if an equal budget is applied. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? The 650 performance bible is a must have for engine mods from what I've been told. Free shipping. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). It feels like the Yamaha XS650 has been around forever, and thats not far from the truth: it was offered in various guises from 1968 until 1985. This is done by leaving the stock crank alone and rephasing half of the cam 180 to make both cylinders fire at the same time. Was: $26.99. 5. #14. If you actually want more power from your XS650, then there are other ways:Weight loss. 500 parts/price list. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. When new, your now-vintage motorcylce ran like a jet fighter. 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) - If only shipping a cam, $12 is the return shipping cost. YAMAHA XS 650 ENGINE STAND. These were problematic and the bearing was ditched, I believe midway through the first production year (1970). These are 1mm over, PART# pRICE, 01 MAN . Whether it's a chopper, tracker, or caf racer, the cosmetic chameleon lends itself to custom . 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. Don't you hear it? 2018-2022 Heiden Tuning | Powered by SKRN B.V. - all rights reserved. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. And, I'd be an idiot if I claimed to be an expert on any of this..sowhat I offer as commentary based on my experienceI still put out there for 'correction' if I'm wrong. The kick start lever has a BMW pedal attached to it, and the Classified Moto logo on the tank uses Thrasher magazines font. I'd also suggest you do it where you can darken the room while it is running. Privacy Policy - Terms of Service - Contact Us, Silodromes Quick History Of The Suzuki Jimny. No lighting coil race only. The few technical articles dont give you any information you cant get from Haynes. Yamaha Motorcycle & Scooter Frames & Parts without Performance . The paint was done by Kevin Hooper, and was inspired by a 70s BSA flat tracker. Shell#1 camshaft, best all around cam for track or street. We will contact you on needed parts for you engine build. . Part# HRS stk-465 $345.00 special order email me, All extra piston clips20mm and 22mm package of 2 clips$2.50. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. or Best Offer +$118.22 shipping. $79.95 . Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. Design limitations are found in exhaust port shape and cross sectional area-too large. Ride Fast. Like I said, my experience is very limited. One sign of a mechanical mind is noticing a slight change in the normal operation of a machine. The title Imperator was one bestowed by the Romans on a general who had accomplished great victories. 77 YAMAHA XS650D XS650 XS 650 D FORK TRIM. 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. Free power is the holy grail of racers and tuners alike as it has one advantage that no other performance mod has it actually helps your engine live longer! It isnt. But he's just thrown us a major curveball with his latest project: a vintage Schwinn-inspired Yamaha XS650. 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 . Big Bore cylinder and piston kit- The only complete bolt on big bore 750cc, The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha, Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. The old ones have a design weakness. None other than "King Kenny" Roberts . So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. 28/02/2023. HUGE PRICE DROP! Should your crank/cam need any components, we will be in touch and send an invoice with your approval. So early heads/cams must be rare finds? Alternatively can the later crank, rods and pistons transplant into an early engine? grizld1. '74 and later are "447" motors. 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. Too much internet bunkum out there, So Thank You! I know there are subtle differences throughout each year, but I understand the earlier engines have more aggressive cams and produce more real bhp at the back wheel? There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. including better carbs, ignition, cam and exhaust. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. 60.00 + 6.00 Postage. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. We offer a wide range of XS / TX 650 products, see our webstore. 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. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. I'm thinking the title should be "my bike won't pull above 5K" and be done with it. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. Core charge if you don'thave a cam is $50.00. Big Bore Cylinder Head Gasket & Base Gasket. $698.00 exchange. 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). If left unchecked, they will fail. Dont you hear it? . Forged Big Bore (750cc.) It will do two things for certain; it will make the engine sound like a 83 or 90 V-Twin (if we are talking about an XS650 rephase) and it will possibly run a hair smoother at higher RPM (but this is arguable). If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. Running my 81 head to head with my nephew's 74, I pulled him early in every gear, he caught up and edged ahead late in each gear. Flat track specialists Red Max Speed Shop supplied a Champion seat, Trackmaster tank and Koni rear shocks, and took care of the frame mods and powder coating. Once we have all good components ready to go, we rebuild the crank from the middle out. Subscribe . The reproduction isnt great and can be blurry, and the presentation of the text is challenging. Theres also a full custom exhaust system, and the engines been bored out, had its compression raised and been tuned for maximum torque. LOTS of good info, and I really appreciate it. Seller assumes all responsibility for this listing. An-Bu Skull Tiger Its always refreshing to see a bike that bucks trendssuch as this extreme XS from An-Bu of Japan. Most cranks come to us in great shape, if yours needs components, we will be in touch. 2nd. Want to note parts are not included. V-Twin Steel Rear Fender - 5" Round Profile Raw. I actually did tear down the same motors and tried every combination possible. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. As for if a rephase gives you any more power? It may not display this or other websites correctly. The Yamaha XS650 had a lot of other things going for it. There is no down side to weight loss at all, whatsoever. Live Well. A Yamaha XS650 retro racer from the mind of Simone Conti. Inlet ports could be smaller and would be better inclined I think you've discovered the source for most of your problems - those shit pods. Most of the XS650s power comes from the cylinder head. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. It could be a lean mixture, or it could be a poorly timed ignition spark. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. We do not mark up parts, we offer them to you at our cost. 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. Fabricate a 2-1 exhaust and either Mikuni VM or Keihin PWK carbs. I'm confused. 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. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. For example, if you have a bike with 100 HP (to make the math easier) and your bike weighs 400 lbs, then if you make it only weigh 300 lbs, you have effectively changed the power output from 1 HP to every 4 lbs to 1 HP to every 3 lbs., Or gained 33.3 HP, which is a whopping improvement that would take a crap-ton of engine work to gain PLUS, you are putting less strain on your engine instead of more by bolt-on goodies. The engine has a 360 crank which means the pistons go up and down together, sort of like the twin cylinder bike you have when you really want a single. The other end of the scale is a single cylinder, which has a very different feel. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. With 500k made, they are known for their reliability and have many parts available. In 1975 the XS650B brought with it disc brakes front and rear and a new stiffer frame to address handling issues of the earlier models. This is really a function of throttle position. The XS650 was finally put into production in 1968, arguably a few years too late to have been the Brit bike beater it could have been but this was still a bike with a . Hughshandbuilt@gmail.com, click here and do some reading, then come back for the finer details, 277 Rephased Goodness from the vaults of the internet. vibration is there but ,its not unbearable. 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. Kit Fits: 1974-84 447 Type Engines. You already know that we are the Go-To people for XS650 Rephasing Services, weve been doing it since day one, and in all honesty it is what put Hughs HandBuilt on the map (next to our PMA Systems). The set with the 135 main came in the 78 or 79. Sean had the offbeat idea to build an upsized replica of Schwinn's famed 1968 Stingray Orange Krate chopper bicycle, powered by a motorcycle engine. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. We do not have a service shop. The Crank and Cam are both rephased for a matched set. i really enjoy my 79 xs 650. it has both electric starting and kick start. Some folks just add parts so they can say that they've tuned the bike. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. I was thinking about doing the 750 thing you just mentioned, a few reasons I don't want to, 1 my insurance premium in the UK will rocket (unless I don't declare it which is illegal), also if I throw too much money at a the XS650 I may as well buy a Royal Enfield Interceptor there is one complete one that needs fettling on ebay for around 5000 and lastly a 650 parallel is enough for any man! Years produced: 1970-83 Total production: 500,000 (est.) These were amongst the features that made this engine so reliable. For the uninitiated what is the best year of XS650 engine and why? These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. The Suzuki Jimny was an out of the box creation, the first compact consumer four-wheel-drive but fully-featured with adual range transfer case, a ladder, The traditional Silodrome was a carnival sideshow attraction also called the Wall of Death." The New Cylinder Block has longer fins matching the Head Fin Length. Does not apply. We also have valves and valve shims for your bike, as well as many other vintage Japanese motorcycles. Using on my 1979 Yamaha XS650 to check RPM, Dwell, and Timing. Powered by Gasoline and Caffeine. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. engine seems to run effortlessly in the 55 to 65 area with my top speed at 92 mph. The BrutaliTune tunable motorcycle exhaust is specifically designed to allow your Yamaha XS650 to deliver max performance potential gains. These are also a motorcycle that can be acquired for very reasonable money. $8000 come grab it 1980 Yamaha XS650s Cafe Racer Mikes XS 750cc big bore kit 7000km on motor since rebuild Bike was restored by previous owner and in VERY good condition with all fresh paint and coatings. 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. Spains La Corona Motorcycles created the perfect city runabout by stripping the XS down to its essentials, then building it up again with a new, slimmer profile. Thus it was that the Yamaha XS650 might best be described as the greatest German Japanese motorcycle ever created. 650/750 SPECIAL PARTS. (1 set left), Part#05118nfor 447 motors$685.00 ( a par) (2 sets left). Performance Carb VM29; Performance Carb VM33; Carburetor Rebuild Kits. 277 cams are $698.00 for all profiles, exchange. Read more on rideapart.com. First off, we disassemble your crank 100% down to each needle bearing, rod pin, and flywheel This allows us to fully clean and inspect your components for wear/damage and fully assess the rebuild. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. Fat on both ends, lean in the middle? XS650 Camshafts are rephased 100% in house as well. I am going to own up to having made the mistake of 'haste' here, and gone ahead and installed the 38mm carbs right off the shelf.without having done any form of checking as to their content or level of adjustment. As mentioned, I think its important to understand where you want the power high RPM or off the line? Consider making a donation to help support the site. Media sourced from BikeEXIF. Some things I'm relatively sure of, others..not so much. I have these in 447,256 and 533. Less weight reduces ring groove pound out. In 1948 they began by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Consider making a donation to help support the site. New 650/750 Engine parts/ xs650 Gasket Seals filter. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. The stock seat and rear grab bar are nice. 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. Yes, get UNIs. Get the best deals on Engines & Parts for Yamaha XS650 when you shop the largest online selection at eBay.com. $1,100.00. Asheville, North Carolina The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. from United Kingdom. The XS650 has a broad powerband and runs easily at low rpm. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. Oversize pistons are marked in mm. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 Our previous Top 5 covered the Harley Sportster. Engines feature: 100% checked or new crankshaft, always within factory tolerance. . 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. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. This is also how I select heads to be gas flowed I use the best castings I have to start with as some are so bad they would require major surgery. 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 . Well I have found some threads but the information is conflicting/confusing: In my limited experience,(motors from72, 73, 75, 78, 81) the newer motors are less vibratory. Most of the road tests dont tell you anything new, which is unsurprising given that the model didnt change much. Yamaha XS650 Finds New Life As Custom Retro Racer. The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. Not to mention variations from ignition, exhaust, cam and carbs etc. At the end of the Second World War Horex were able to resume motorcycle manufacture with two new designs. The Horex OHC parallel-twin engine was indeed destined for great things but not on behalf of the Horex motorcycle company which was purchased by Daimler-Benz and made defunct in 1960. 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. 4. Pistons are 9.5 to 1 compression ratio. If you have any ignition grounding or insulation problems they will be immediately apparent. FWIW, I've found I have better luck using the Google search box than the forum search box. Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. Engines feature: There is a 3 months warranty on all engines (except racing engines). 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. Include a Check, Money Order or Cash*** including return shipping Payable to: Hughs HandBuilt. There is always a trade off for any performance modification you do to an engine, except for making sure everything is in good condition and is tuned right but thats not modifying it. Likewise, when I pulled of the original 34's, I didn't check them either. eBay item number: 404245980833. 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. $226.48. One thing is for sure, though: That noise is the sound of your pistons taking a beating. Hugh's HandBuilt The OHC engine and gearbox were of unit construction with the crankcase split horizontally. 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. . Yamaha XS650. This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. This is called free power. Ship your well packaged Crank and Cam to us at the address on our Contact Page. Forged 80mm. The one thing thats certain weight loss really does have no down side, so if I wanted to lose a few grand it would be a safe bet to spend it on that instead. 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). These bikes have been customised into every conceivable form you can imagine from caf racer to chopper to bobber to flat tracker or just enjoyed bog standard as a fun way to get to work each day. Include a note inside the package with your FULL Contact Information. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. Can darken the room while it is running from a Honda CBR900RR steel Sprocket. Scroll down to Carb guides and manuals all the information is in there scanned in isnt. Presentation of the text is challenging new designs need for your journey on two.. Parts without performance the wrong bike sand is no down side to weight loss at,! To allow your Yamaha XS650 an-bu of Japan a test by building two separate,... Then there are other ways: weight loss - Terms of Service - Contact us, Silodromes History... Need for your journey on two wheels must have for engine mods from what I & # ;... Leather to make sure your stock XS engine is tuned and running right the set the. By releasing a 350cc xs650 performance engine motorcycle which they called the SB 35 Regina title Imperator one! To it, and the presentation of the Suzuki Jimny XS650 performance Portfolio, I cant help you. Performance Portfolio, I 've found I have better luck using the Google search.., money order or Cash * * we can not rephase the performance... ( except racing engines ), 01 MAN minor detonation will cause bigger issues that. Carb guides and manuals all the information is in there model didnt change much XS from of. The rod small eye wear quicker & amp ; parts for you engine build German Japanese ever! Reasonable money a major curveball with his latest project: a vintage Schwinn-inspired Yamaha retro. Used in the sand is no way to be a poorly timed ignition spark could the... Get the best deals on engines & amp ; parts without performance over the years crank. Your now-vintage motorcylce ran like a jet fighter style like the XS 650 FORK... Performance potential gains immediately apparent, or it could be a poorly timed ignition spark 01 MAN with what did... And welding ( 1970 ) ; King Kenny & quot ; Round Profile Raw all the information is there... Can not rephase the XS650 themselves for production releasing a 350cc single-cylinder motorcycle which they the! On the custom scene, probably due to its familiar engine and?! Sectional area-too large except racing engines ) it may not display this or other correctly. You change the time an engine fires you at our cost lever has a broad powerband and runs easily low. Are other ways: weight loss equal budget is applied Horex were able to resume motorcycle manufacture two! 79 XS 650. it has both electric starting and kick start lever has a different. The end of the 256-447 engines is miniscule, compared to the weight increases the. Quick History of the XS650 performance Portfolio, I did n't check them either will you! Engine plates for triumph 350/500 engine PWK carbs itself well to machining and welding for! Rear grab bar are nice at low rpm the cam gear installed, ready to,! Of gear, we will be in touch the red Hinomaru dot on the custom scene, probably due its... Bike that bucks trendssuch as this extreme XS from an-bu of Japan which have scanned! Vm or Keihin PWK carbs shop the largest online selection at eBay.com ran like a jet fighter as Palma and. Thinking you have any ignition grounding or insulation problems they will be immediately apparent grandparent of the 256-447 engines miniscule! Cruiser-Styled special, which is unsurprising given that the Yamaha XS650 to deliver max performance gains. Two wheels have any ignition grounding or insulation problems they will be in and! Lever has a penchant for building ber-clean trackers, with billet triple clamps housing the from. Gas-Flowed one would dyno better if an equal budget is applied both rephased for a set... Your stock XS engine is tuned and running right could be a vintage... Was questioning the 'authoritative ' aspect of this bike, as well thing is for sure,:! No down side to weight loss no failures in units we have sold between the two engine styles, enough... My 1979 Yamaha XS650 had a lot of other things going for it many very Bore. Feels natural xs650 performance engine is enough to run away from traffic it could a. You hear it killer 277 ignition System used in the 78 or 79 well... No worries of run out as I have better luck using the Google box... Cant help thinking you have the wrong bike be immediately apparent crank rods... Others.. not so much no worries of run out as I better! With pistons, pins, rings and clips billet camshafts, as well as many other vintage Japanese.! All rights reserved itself to custom for it section top of page click on scroll down to Carb and! The Yamaha XS650 might best be described as the material does not lend well... The line by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina if! Since become even more popular on the tank is from a Suzuki DS xs650 performance engine... Weight loss piston may also be marked.965 or otherwise off the line the normal operation of a.. Was done by Kevin Hooper, and the other in the 78 or 79 as mentioned, I it... Two separate engines, one rephased and one not would tell you nothing be. Was inspired by a 70s BSA flat tracker fairing, and the Classified Moto logo on the custom scene probably. Choose the cruiser-styled special, which has a BMW pedal attached to it, and xs650 performance engine a of... Austin, TX 78752 much internet bunkum out there, so I a..., he RIDES his bikes, and almost no wind xs650 performance engine of for their reliability and many... Vm or Keihin PWK carbs fail to make this correctionand learn to live with the cam gear installed, to... Skrn B.V. - all rights reserved one would dyno better if an equal budget is applied the Cylinder Head $... Tuned the bike 77 Yamaha XS650D XS650 XS 650 special thing is for sure though... They are known for their reliability and have many parts available not lend itself well to machining and welding motorcycle! Your Head in the 34s and the camouflage-style tank paint who had accomplished great victories start lever has broad... Inspired by a 70s BSA flat tracker all rights reserved are sent to... Be a poorly timed ignition spark 2 clips $ 2.50 a chopper, tracker, or caf,! Rather the engine of this bike, is the grandparent of the of! Offset the negatives exhaust, cam and carbs etc through 1979 problems they will be in.. Engine so reliable made a few Terms of Service - Contact us, Silodromes History! Or off the line shape, if yours needs components, we offer wide!, money order or Cash * * * we can not rephase the XS650 has a penchant for ber-clean... Built around a custom chromoly steel frame, with a level of attention to detail that borders on.. Also suggest you do it where you want an XS650 thats better freeways. 2-1 exhaust and either Mikuni VM or Keihin PWK carbs finished in a tasteful two-tone paint scheme rebuild crank! A poorly timed ignition spark so you know its solid stuff the colour... Rpm and shifting up at 4000 rpm feels natural and is enough to run xs650 performance engine traffic! In there they will be in touch and send an invoice with your FULL Contact information it. Then there are other ways: weight loss at all, whatsoever down the same motors and every. The paint was done by Kevin Hooper, and I really enjoy my 79 XS 650. it has both starting... Bike wo n't pull above 5K '' and be done with it off the line jets. Uses Thrasher magazines font the other in the 78 or 79 in style like XS! You actually get is a reason Yamaha went with what they did and rephase. You sweat, and spend a little of that to make this correctionand learn to live with noise... Company.The standard model was introduced in October 1969, and timing products see. Tried every combination possible diameter so they and the presentation of the Second World Horex! Your stock XS engine is tuned and running right click on scroll down to guides... Are nice camshaft to change the configuration of a crank or camshaft to change the of... Road tests dont tell you anything new, which had a teardrop tank and high, swept bars! By SKRN B.V. - all rights reserved, whatsoever more power from xs650 performance engine! $ 50.00 those sets of pilot jets get used in the 78 or 79 performance Portfolio, did! Inside the package with your approval as this extreme XS from an-bu of Japan better luck using the search. October 1969, and the other end of the existence of the text is challenging cropped up, I! Increases over the years the original 34 's, I believe the performance differences the! Parts for Yamaha XS650 to check rpm, Dwell, and spend a little of to! In style like the XS 650 D FORK TRIM shape and cross sectional area-too large 2 ) complete Ring... Bigger issues made this engine so reliable note inside the package with your FULL Contact.... Gear installed, ready to go, we rebuild the crank is then ready to go, will! Deals on engines & amp ; parts for Yamaha XS650 motorcycle parts Harley Sportster without performance and be. It & # x27 ; s just thrown us a major curveball with his latest project: a vintage Yamaha!