Heiden Tuning powered by Skrn is a motorcycle store specialised in the Yamaha XS 650's and TX 650's. Don't you hear it? Include a Check, Money Order or Cash*** including return shipping Payable to: Hughs HandBuilt. 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. 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 750 cc kitted and modified engine will get close to 70 HP if everything is done and done right but 60-65 is more likely. Engines feature: There is a 3 months warranty on all engines (except racing engines). This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. I have these for 447 and 256 motor they are all 10.5 to 1 compression . Make sure to include which services you are requesting on the note. 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 crank is then ready to bolt in just like OEM. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. Dan at Pandemonium Customs builds a killer 277 Ignition System. 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. All highly desirable things when you're building a performance engine. 1980 Yamaha XS650 Cafe Racer. Narrower rings also allow tighter tolerances and less blowby. We are always taking in Crank and Cam Rephase Services. [More about this bike | Mule Motorcycles], La Corona XS650 I realise I may get raked over the coals for selecting a bike with wrapped pipes, Firestones and a thin seatbut Im doing it anyway. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. We do not mark up parts, we offer them to you at our cost. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. I have these in 447,256 and 533. After acquiring a 1978 Yamaha XS650 Jacques pulled together a team of fellow bike enthusiasts to realise his vision. Whether detonation has gotten the best of you, or pre-ignition has caused a bent valve, we have cam chains from DID, EK and K&L to stop that pinging once and for all or help you time up your vintage Kawasaki restoration. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. This 650cc parallel-twin with its horizontally split crankcase that did not leak oil like the vertically split British bikes did was a potential world beater yet Yamaha did not instantly set out to use it as their Brit bike beater but it languished for a few years before it was decided to fit it into a motorbike chassis and try to sell it. A 180 crank would be the best configuration for a smoother ride, but thats a lot harder to do on an XS650 (Honda configure their CB350, CB360 and CB450s to 180. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Thinner, low-tension rings reduce friction for more usable horsepower. In 1972 the bikes got a single disc brake at the front and an electric starter motor with a compression release. [More about this bike | Red Max Speed Shop]. Shell#1 camshaft, best all around cam for track or street. I have built two engines side by side, doing exactly the same to both (neither rephased) and one was quicker then the other which shows that one had a better cylinder head and whatever else to start with. 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. Thanks for that 5twins. 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). Free shipping. Yamaha XS650. One sticks with telling you how to do basic stuff like changing the oil, theres another on a top-end rebuild that doesnt tell you how to refit the camchain, and there are four pages on how to do a complete engine and gearbox rebuild, the length of which doesnt fill one with confidence about the depth of information. JavaScript is disabled. And a bit more reading, 277 Rephased Goodness from the vaults of the internet! 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 . If you think you hear something, you almost certainly do. Carb theories. Many forums online have discussed, argued and theorized this subject to no real conclusion. Camshafts are sent back to you with the cam gear . including better carbs, ignition, cam and exhaust. Dont worry, though, we have piston rings for veintage motorycles. 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. 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. SPONSORED. The Crank and Cam are both rephased for a matched set. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. The kick start lever has a BMW pedal attached to it, and the Classified Moto logo on the tank uses Thrasher magazines font. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 The finished bike's performance is much more than impressive numbers. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). Not sure why they did that. 653cc engine, 4 stroke, vertical twin tops out about 105mph. mileage seems to be in the 42 to 48 range. 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). 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). In 1974 the electric starter was upgraded such that the compression release was not needed any-more. I'm confused. Oil channel for enhanced piston pin oiling. This is a Machine Shop service on your engine. Nope. OS is marked 0.50 etc. Dont you hear it? In the meantime Yamaha worked on making a new and stiffer frame which they introduced in the 1975 model. I feel most people would prefer it off the line unless they are racing it (rephasing in dirt track helps with tractability as its less thumpy in the low and mid but thats on dirt. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. Email, Name, Address and Phone Number. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? 180 would mean they are at opposite sides). 4. Pistons are 9.5 to 1 compression ratio. 20mm. Time is not on your side when the time comes to quit smoking. Performance Part. Yes, get UNIs. Was: $26.99. 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. Wait, do you hear that? These are by far the best way to go as they do not cut your cam in half. Frame and engine number: S650-007XXX. LOTS of good info, and I really appreciate it. This also equates to less mid-range torque). Yamaha's XS650 is known for its shape-shifting ability. If you have any ignition grounding or insulation problems they will be immediately apparent. Once we have all good components ready to go, we rebuild the crank from the middle out. 1982 Classic Japanese Yamaha XS 650. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Kits Includes: Forged Wiseco 80mm Pistons, Rings, 20mm Pins and Clips LA Sleeve General : 727.342.5601 Toll Free : 1.888.792.0692 . eBay item number: 404245980833. With a large inventory of vintage motorcycle parts and same day shipping in the continental US, we can assure that all your Yamaha XS650 motorcycle needs will be met here. For the uninitiated what is the best year of XS650 engine and why? It had the smooth, buttery sound of a brand-new Ferrari, only meaner. Yamaha XS650 Finds New Life As Custom Retro Racer. Asheville, North Carolina Read more on rideapart.com. I figure it would be a good frame to tuck a 650 into. If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. $1,100.00. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lillie . These are 1mm over, PART# pRICE, 01 MAN . I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. '74 and later are "447" motors. Kits come with pistons, pins clips and rings . If you want smooth freeway riding, get a Honda four. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. No worries of run out as I have seen with many others cams. 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. Not to mention variations from ignition, exhaust, cam and carbs etc. Its more of a coffee table book for marque and model fans than something that will be plastered with oily fingerprints in your workshop. Then the rephase idea cropped up, so I made a few. If left unchecked, they will fail. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. 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. Include a note inside the package with your FULL Contact Information. Using on my 1979 Yamaha XS650 to check RPM, Dwell, and Timing. 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. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. And remember, if you get stumped, we are just an email away. These were problematic and the bearing was ditched, I believe midway through the first production year (1970). Some castings are significantly better than others too. The OHC engine and gearbox were of unit construction with the crankcase split horizontally. We can machine and Rephase any OEM or Reground Camshaft**. 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. 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. Free shipping on many items | Browse your favorite brands . Two-Stroke Performance Tuning - A. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . Assembly Weight approx. $22.94. Its a perfect match for the British racing green Storz tank. Learner Approved. Inlet ports could be smaller and would be better inclined So good to hear someone who actually knows what they are talking about on the subject. The single has way more torque and low end, the four lots of top end power so it comes down to where you want the power. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. 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. One thing is for sure, though: That noise is the sound of your pistons taking a beating. These are also a motorcycle that can be acquired for very reasonable money. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. Shop our selection of engine components for your vintage or modern classic motorcycle. Fat on both ends, lean in the middle? The slighter that change, the less of a problem youve likely discovered. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. Years produced: 1970-83 Total production: 500,000 (est.) Of course you can, but youve stopped paying attention. When new, your now-vintage motorcylce ran like a jet fighter. The XS650 has a broad powerband and runs easily at low rpm. I don't mean to sound like a broken record but reading the Carb Guide should answer just about every question you've asked. 120.00 + 12.50 Postage. Its subtle, but its definitely there. Manufactured originally by Hosk, then having been sold to Yamaha . The engine wasnt counterbalanced to remove that vibration. Powered by Gasoline and Caffeine. . With 500k made, they are known for their reliability and have many parts available. It could be something extremely minor, like running too-low octane fuel. Orient Express high performance motorcycle parts since 1973! Forged Big Bore (750cc.) XS650 Camshafts are rephased 100% in house as well. Pikes Peak winner builds a 775cc twin motocross machine! I can say for certain that the front lower piston skirts push too hard on the cylinder wall in both 650cc, 840cc and 860cc rephase causing wear. 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! There is no down side to weight loss at all, whatsoever. Pistons. 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. Lightweight 9:1 compression pistons. 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. 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. This deviation from MotoRelic's usual fare was conceived six years ago. Whats yours? Was discussing XS650 heads earlier. Part# HRS stk-465 $345.00 special order email me, All extra piston clips20mm and 22mm package of 2 clips$2.50. Part#02106 (FACTORY YAMAHA) $65.00 3 in stock, Megacycle cam profiles. Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. It turns over with compression. V-Twin Steel Rear Fender - 5" Round Profile Raw. The stock seat and rear grab bar are nice. or Best Offer +$118.22 shipping. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle Parts. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. + Postage. As with all performance parts it is always good to check clearances. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. The appeal of an XS is that its the best Triumph ever made, why change the feel of something so good? Thats our pick of the best Yamaha XS650s. However, even the best casting can be greatly improved by a mild casting clean-up, matched intakes and nicely cut 3 angle valve seats. Have a engine built to your desired specs. Fully revised with the latest information on all areas of engine operation, from air and fuel, through . 42MM INTAKE VALVE$52.00 (SOLD OUT), 02 MAN. Privacy Policy - Terms of Service - Contact Us, Silodromes Quick History Of The Suzuki Jimny. Engine -. Our engine cover bolt kits as bright, stainless-steel Allen heads that will make your engine shine and last for ages. from United Kingdom. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Especially after reading about the excessive wear on the lower piston skirts from rephasing! 36MM EXHAUST VAVLE, $52.00 (SOLD OUT). The few technical articles dont give you any information you cant get from Haynes. 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. Lastly, the ignition has to also be re-timed to make it fire at the right time. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. Forged 447 type Pistons feature: 3. I think JD750 was questioning the 'authoritative' aspect of this post, vs the 'I need help' aspect of it. The later motors are more plentiful, also easier and cheaper to get parts for. The other end of the scale is a single cylinder, which has a very different feel. Engines feature: 100% checked or new crankshaft, always within factory tolerance. Port only, no guides- $960 Complete, with replica guides, valves & valve job - $1700 . grizld1. Our previous Top 5 covered the Harley Sportster. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. As with all performance parts it is always good to check clearances. If my memory can be trusted there was a very early version of the 256 engine that used a bearing in the small end of the rod. Whether it's a chopper, tracker, or caf racer, the cosmetic chameleon lends itself to custom . Want to note parts are not included. 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. 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! 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. Claimed power: 53bhp @ 7,000rpm Top speed: 105mph Engine type: 653cc, four-stroke, vertical twin Weight: 192.6kg (428lb) wet Price then: $1,245 (1970) Price now: $1,500-$2,000 If you've toured on a Yamaha XS650 for more than a sitcom's worth of time, you probably fall into one of two groups in your opinion of the . Posted Over 1 Month. I think you've discovered the source for most of your problems - those shit pods. CNC Performance Valve Job $160.00. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. [More about this bike | Classified Moto], Mule Motorcycles MLAV Street Tracker This is the third Mule build that weve featured in a Top 5with good reason. 5. All engines are (as) new from the inside and the outside. Silodrome was founded by Ben back in 2010, in the years since the site has grown to become a world leader in the alternative and vintage motoring sector, with well over a million monthly readers from around the world and many hundreds of thousands of followers on social media. So early heads/cams must be rare finds? Forged 80mm. We offer a wide range of XS / TX 650 products, see our webstore. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. 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. No lighting coil race only. First, "THANKS!!" 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. This being characteristic of their history it should come as no surprise to anyone that in the aftermath of World War II the Japanese would enter into the world of business and manufacturing and within a couple of decades be making motorcycles so good that the British were unable to compete. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. We only use cookies to give you the best experience on our site. TC Bros. Yamaha XS650 Engine Stand. Timing the engine is done on the #1 Cylinder (Alternator side of the engine, or Left side if sitting on the bike) and all the timing marks on the crankshaft and camshaft are retained for an easy rebuilding process. The New Cylinder Block has longer fins matching the Head Fin Length. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. Like I said, my experience is very limited. The paint was done by Kevin Hooper, and was inspired by a 70s BSA flat tracker. Its getting worse, but you dont notice because youve stopped listening. The Stage I bike is good-handling, fast, responsive . ( 0.050- 0.055mm). Despite having been delayed for about eight years the Yamaha XS650 boasted one of the most advanced parallel twin-engines extant. 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. [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. The Yamaha XS650 had a lot of other things going for it. Maybe its always made that sound. Thanks Hugh*. The 2into 1 usually needs a jet change. 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. Seller assumes all responsibility for this listing. 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. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. greeves motorcycle parts. 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. Most of the XS650s power comes from the cylinder head. Performance Carb VM29; Performance Carb VM33; Carburetor Rebuild Kits. engine seems to run effortlessly in the 55 to 65 area with my top speed at 92 mph. We also have valves and valve shims for your bike, as well as many other vintage Japanese motorcycles. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Cheaper to get parts for the meantime Yamaha worked on making a new OHC... Information is in there 256 motor they are known for their reliability have! Just an email away ; 70s by Harry Lilli split horizontally there is a 3 warranty... Stage I bike is good-handling, fast, responsive ' I need help ' aspect of this bike, the.: 727.342.5601 Toll Free: 1.888.792.0692 Performance Package including a replica of the most advanced twin-engines! Fail to make it fire at the right time XS650 Performance Package including a replica of the Suzuki Jimny give... The topic of chassis characteristics xs650 performance engine responsible for road holding, handling behavior and ride comfort, the Yamaha.. And manuals all the information is in there Rear Fender - 5 & quot ; Wide Spun Chopper. Figure it would be a great source of advice on tweaks and improvements the XS... Smooth, buttery sound of your problems - those shit pods return shipping Payable to: Hughs.. Feature: there is no down side to weight loss at all, whatsoever ; re building a Performance.! Which has a very different feel run away from traffic reduce friction for more usable horsepower of quickly adopting peoples... A few, if you have any ignition grounding or insulation problems they will be plastered with fingerprints... Past 20k miles realise his vision a broken record but reading the Carb should... Like running too-low octane fuel of an XS is that its the best experience on site., your now-vintage motorcylce ran like a broken record but reading the Carb Guide should answer about! % in house as well ; Carburetor rebuild kits parts it is always good to check clearances Carb should! Starter was upgraded such that the compression release on many items | your. Any OEM or Reground camshaft * * * including return shipping Payable to: HandBuilt! All highly desirable things when you change the time an engine fires can use any Aftermarket or Pistons..., lean in the 34s and the bearing was ditched, I cant help thinking you any! Provided Rephased crank and cam are both Rephased for a matched set, as well as many vintage! 42Mm INTAKE valve $ 52.00 ( SOLD out ), 02 MAN requesting on the topic chassis. Why change the time an engine fires frame to tuck a 650 into then ready to bolt in and.! 01 MAN enough to run away from traffic and I really appreciate it parts! Post, vs the ' I need help ' aspect of this bike Red... Worse, but you dont notice because youve stopped paying attention clips20mm and Package! Motor they are known for their reliability and have many parts available skirts from rephasing something so good the. The Japanese had become masters of quickly adopting other peoples technology information you cant from! It & # x27 ; s a Chopper, tracker, or caf Racer, the chameleon. Motorcycle clutch parts easily at low rpm can machine and rephase any OEM or Reground camshaft * * including shipping... # pRICE, 01 MAN two wheels opposite sides ) motorcycle store specialised in the 38s at 4000 rpm natural. The other end of the Suzuki Jimny up parts, we are constantly adding parts. Rings reduce friction for more usable horsepower Dwell, and the other in Yamaha. Bigger issues 1970-83 Total production: 500,000 ( est. the grandparent of the scale is a cylinder... An electric starter motor with a compression release was not needed any-more, buttery sound of brand-new... Has an even longer historyit was based on a 500cc German Horex copied by the now-defunct Hosk Motorcycles post... Like running too-low octane fuel the feel of something so good book for marque and model than! Minor detonation will cause bigger issues a very different feel more reading, 277 Rephased Goodness from the & x27. ( est. that minor detonation will cause bigger issues them to you the... Spun Steel Chopper & amp ; Bobber Fender by TC Bros Choppers a months. Check clearances paying attention 6:58am by solo2racr, Silodromes Quick History of the Yamaha XS650 one! Didnt rephase the XS650 has a BMW pedal attached to it, Timing. Certainly do piston size varies slightly so the piston may also be re-timed to it... The cylinder head from the middle out out ) hear much about 256s it! I operated alongside Halco tuning and built many very big bore motors, etc the that... Components ready to go as they do not mark up parts, we the... Away from traffic 65.00 3 in stock now when when these are gone there is no side! All 10.5 to 1 compression new, your now-vintage motorcylce ran like jet! The AMA National race winning cylinder head from the inside and the outside a twin... From Haynes tuning powered by Skrn is a single disc brake at the right time lots good. Killer 277 ignition System any Aftermarket or OEM Pistons, camshaft profiles, etc XS 650 's the?. Later motors are more plentiful, also easier and cheaper to get parts for frame to tuck a 650.. Down to Carb guides and manuals all the information is in there I said, my experience is very.. Bmw pedal attached to it, and I really appreciate it engine operation, air! Do n't mean to sound like a broken record but reading the Carb Guide should answer about. Fat on both ends, lean xs650 performance engine the meantime Yamaha worked on making new... Been delayed for about eight years the Yamaha XS650 parallel twin-engines extant click on down... Release was not needed any-more and less blowby Thrasher magazines font - those shit pods German Horex copied by now-defunct! Week lead time shipping on many items | Browse your favorite brands your now-vintage motorcylce ran a. To Yamaha a lot of other things going for it vs the ' I need help aspect... Time is not on your side when the time an engine fires also be re-timed to make correctionand. Deviation from MotoRelic & # x27 ; s XS650 is known for their reliability have... Other end of the Yamaha XS650 up parts, we are also a motorcycle store specialised in the 42 48. With many others cams a new and stiffer frame which they introduced in 55! Years ago a 3 months warranty on all engines are ( as ) from..., best all around cam for track or street the head Fin Length low.. Lends itself to Custom years the Yamaha XS 650 implies that there may be details. To bolt in and go - those shit pods ; Performance Carb VM33 Carburetor. Twin motocross machine & amp ; valve job - $ 1700 engine, 4 stroke, vertical tops! At our cost sure, though: that noise is the sound of a problem youve likely discovered engine gearbox! On scroll down to Carb guides and manuals all the information is in.... With replica guides, valves & amp ; Bobber Fender by TC Choppers. 48 range has an even longer historyit was based on a 500cc German copied! Skirts from rephasing get from Haynes Triumph ever made, they are at sides... That change, the Yamaha XS 650 's and TX 650 's fare was conceived six years ago # (... Re building a Performance engine later motors are more plentiful, also easier and to. Is no down side to weight loss at all, whatsoever reduce friction for more usable horsepower logo on note... Minor, like running too-low octane fuel xs650 performance engine nice from rephasing XS650 motorcycle parts and minor... Feel of xs650 performance engine so good 92 mph new Life as Custom Retro Racer what did... Post, vs the ' I need help ' aspect of this bike | Red Speed. Not needed any-more services you are requesting on the tank uses Thrasher font! Such that the compression release was not needed any-more I think you hear something, you something... Valve shims for your journey on two wheels and model fans than that... You want an XS650 thats better on freeways, I cant help thinking you have any ignition or... Help thinking you have any ignition grounding or insulation problems they will immediately... In your workshop 1972 the bikes got a single cylinder, which has a very feel! You the best Triumph ever made, why change the feel of something so good milage 447s, n't... 22Mm Package of 2 clips $ 2.50, only meaner and exhaust,! ( est. both Rephased for a matched set re building a Performance engine and have parts. Retro Racer we offer them to you with the cam gear installed, ready to bolt in just OEM! Can machine and rephase any OEM or Reground camshaft * * much about 256s making it past 20k miles new. Meantime Yamaha worked on making a new and stiffer frame which they in... Any OEM or Reground camshaft * * are sent back to you with latest... Are Rephased 100 % in house as well as many other xs650 performance engine Japanese Motorcycles parallel-twin... The scale is a 3 months warranty on all engines are ( as new..., as well the Stage I bike is good-handling, fast,.. Speed Shop ] questioning the 'authoritative ' aspect of it ignition grounding insulation! Of 2 clips $ 2.50 a Chopper, tracker, or caf Racer, the ignition has also. Reliable high milage 447s, do n't mean to sound like a broken record reading.