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 only thing that . Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. Model XS650. Live Well. 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. If only shipping a cam, $12 is the return shipping cost. Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. My thoughts are that this subject should become a separate category, as it contains aspects of the Carb section, Ignition, Electrical, Engine Mechanical, and even the exhaust section. Its more of a coffee table book for marque and model fans than something that will be plastered with oily fingerprints in your workshop. Was discussing XS650 heads earlier. The slighter that change, the less of a problem youve likely discovered. ( 0.050- 0.055mm). Return Shipping (in the Continental US) is a flat $45 if out of the country contact us and well get a rate for you. The 750cc conversion is always fun. , we hope, been impressed by what can be done with the XS. New 650/750 Engine parts/ xs650 Gasket Seals filter. Yes, get UNIs. Co-Built built the bespoke exhaust systemcomplete with removable baffles. We like the 250-30 for our flat track 70hp motors. 1982 Classic Japanese Yamaha XS 650. It isnt. Consider making a donation to help support the site. This does not include and parts that may be needed. No lighting coil race only. Yamaha XS650 Finds New Life As Custom Retro Racer. The New Cylinder Block has longer fins matching the Head Fin Length. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. 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. $135.00 plus your old cam. Dont worry, though, we have piston rings for veintage motorycles. 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. If you think you hear something, you almost certainly do. Opens in a new window or tab. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Most any bike shop can get them for you or you can get them numerous places on-line .. 5twins, many thanks for the comments.though I think I should re-state that the bike no longer has the 34s on it..but now has 38s. 6. 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. Some castings are significantly better than others too. Make sure to include which services you are requesting on the note. 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. No worries of run out as I have seen with many others cams. Theres a pinging sound coming from your engine. 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. Wait, do you hear that? The engine wasnt counterbalanced to remove that vibration. The crank is then ready to bolt in just like OEM. 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 . #14. For a better experience, please enable JavaScript in your browser before proceeding. Yamaha xs 650 chopper bobber Exhaust Downpipe. In retrospect I should have 0-60 timed the stock bike before building it then 0-60 time Shortcake to see how much the theory translates into faster times. you never said that you ensured it is timed properly. 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. 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. JavaScript is disabled. All highly desirable things when you're building a performance engine. Rock solid timing, no failures in units we have sold between the xs650 and tt500. These are by far the best way to go as they do not cut your cam in half. All profiles are. 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. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. 1. $226.48. 7000 km. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . HUGE PRICE DROP! Ripper pushbike. Rock solid timing, no failures in units we have sold between the xs650 and tt500. No. Bell 1999-11-28 Engine-tuning expert A. Graham Bell steers you through the various modifications that can be made to coax maximum useable power output and mechanical reliability from your two-stroke. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. That blue-black smoke emanating from your tail pipe is a major issue. . In 1972 the bikes got a single disc brake at the front and an electric starter motor with a compression release. Ducati Pantah by Purpose Built Moto We have a soft . Was: $26.99. This is a Machine Shop service on your engine. 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. Road. 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? All Carburetor . Include a note inside the package with your FULL Contact Information. and the Standard size piston has.945 marked on its top (the 74 is always dropped). By continuing to use the site you are agreeing to our use of cookies. Powered by Gasoline and Caffeine. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. The kick start lever has a BMW pedal attached to it, and the Classified Moto logo on the tank uses Thrasher magazines font. The stock seat and rear grab bar are nice. XS650 - XS Performance $49.75 Part # 24-2653 Add To Cart Banjo Bolt - Oil Delivery - TX650 - XS650 - 1970-1984 - Pkg 2 $14.00 Part # 49-0720 Add To Cart Bearing . There is no down side to weight loss at all, whatsoever. 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 Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. Unfortunately, we don't have engines in stock at this moment!!! I think you've discovered the source for most of your problems - those shit pods. The 2into 1 usually needs a jet change. Its common to put on blinders when you run an ailing engine. Of course you can, but you've stopped paying attention. Kits come with pistons, pins clips and rings . As mentioned, I think its important to understand where you want the power high RPM or off the line? Engines feature: 100% checked or new crankshaft, always within factory tolerance. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. rideapart.com - Dustin Wheelen 13h. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. eBay item number: 404245980833. Then the rephase idea cropped up, so I made a few. YAMAHA XS 650 ENGINE STAND. 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. Head work and cams are king. 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." Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. Silodrome was founded in 2010 as a website dedicated to Gasoline Culture and all it entails - We write about modern cars, classic cars, motorcycles, racing, gear, gadgets, clothing, boats, planes, airships and the occasional submarine.Read more Silodrome 2023. all rights reserved. The paint was done by Kevin Hooper, and was inspired by a 70s BSA flat tracker. 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. mileage seems to be in the 42 to 48 range. For a better experience, please enable JavaScript in your browser before proceeding. 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). It's subtle, but it's definitely there. [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. Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle Parts. $1,100.00. If you actually want more power from your XS650, then there are other ways:Weight loss. vibration is there but ,its not unbearable. Or are there other shortcomings of the early engine? They only made them from 1970-1983. Read more on rideapart.com. 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. Dan at Pandemonium Customs builds a killer 277 Ignition System. 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! 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. It turns over with compression. or Best Offer +$118.22 shipping. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. 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. 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). 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. So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. UPC. Big Bore Cylinder and Piston Kit. Oil channel for enhanced piston pin oiling. The XS was conceived as an alternative to the classic British twins, and the original XS . 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. *I am out of the shop for a few weeks due to a minor surgery, so there will be a delay. Shell/JE 700 piston sets, top quality forged pistons. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. Part#02106 (FACTORY YAMAHA) $65.00 3 in stock, Megacycle cam profiles. Most cranks come to us in great shape, if yours needs components, we will be in touch. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Time is not on your side when the time comes to quit smoking. 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. Narrower rings also allow tighter tolerances and less blowby. The title Imperator was one bestowed by the Romans on a general who had accomplished great victories. Nope. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Part# 256LRfor256 long rods motors $685.00 (a par) . 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. A rephase on an XS650 is usually at 277 or 270 so that one piston rod is at 12 Oclock and the other at 9 Oclock (depending on which way you hold it). 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 also equates to less mid-range torque). 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. 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. 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. Two-Stroke Performance Tuning - A. The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. Kit Fits: 1974-84 447 Type Engines. While you freshened the module, plugs, etc. We only use cookies to give you the best experience on our site. 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. 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. 277 cams are $698.00 for all profiles, exchange. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. 1970 Yamaha XS650; 1971 Yamaha XS650; 1972 Yamaha XS650; 1973 Yamaha XS650; 1974 Yamaha XS650; 1975 Yamaha XS650; 1976 Yamaha XS650; We offer a wide range of XS / TX 650 products, see our webstore. Yamahas XS650 turned out to be a bike that was and is a lot of fun to ride despite motorcycle writers bemoaning that its engine tends send out good vibrations at speed and they didnt think the vibrations were good, but a lot of riders did. Classic Yamaha XS650 Low Level Plain Metal Exhaust Pipes . emailProtector.addCloakedMailto("ep_11c6a673", 1); or +31 (0)88-8338344 (Only Thursday & Friday from 11.30-13.30 or Saturdays from 09.00-14.00 (CET)). Once we have all good components ready to go, we rebuild the crank from the middle out. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. 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). Likewise, when I pulled of the original 34's, I didn't check them either. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. 750 cc. FWIW, I've found I have better luck using the Google search box than the forum search box. 653cc engine, 4 stroke, vertical twin tops out about 105mph. 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. 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. Using on my 1979 Yamaha XS650 to check RPM, Dwell, and Timing. Thus it was that the Yamaha XS650 might best be described as the greatest German Japanese motorcycle ever created. Its Triple Perf-Tube technology, with tunable rotary disks, allows fine-tuning of the power capability delivery for different types of riding . For the uninitiated what is the best year of XS650 engine and why? 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. The early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. If it got away from you this time, we can help get your vintage motorcycle back in action, so you can enjoy those beautiful riding days in peace and at ease. 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. We have engine case bolts for many vintage Japanese street bikes. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Soonest I will be able to work on Cranks and Cams will be 2/9/23, Feel free to ship them in though, so you can be in the que for when I get back to work on these suckers. The XS650 is a bike with a long and solid history. 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. dalton1359 (3,442) 100%. . The frame number matches the engine perfectly. Free shipping. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. 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. Brooklands Books 15 ISBN: 1 855 20574 2Read more Reviews, Letters, Opinion, News and Features online at www.classicbikeguide.com and in the August 2020 issue of Classic Bike Guide on sale now! 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 . Part# HRS stk-465 $345.00 special order email me. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. 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. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. Note: Stock Cylinder bore size is usually about 75mm. 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). This is really a function of throttle position. Inspired by the Shell Thuet machines, Alex bought a '77 XS650 and fully rebuilt the engine with stock size pistons, a Shell #1 cam, and Mikuni round-slide carbs. You freshened the module, plugs xs650 performance engine etc as you would an existing XS650.... Piston has.945 marked on its top ( the 74 is always dropped ) chopper. Cylinder and piston kit ever made for the uninitiated what is the return cost... Source for most of your problems - those shit pods units we have sold the! Not otherwise available for the uninitiated what is the leading destination for XS650... Larger cooling fins that extend out the same distance as the material does not and. And spend a little of that to make sure to include which services you are on... Is always dropped ) seen with many others cams the parts needed for the uninitiated what is leading!: //www.amazon.com/Uni-2-Stage-S413919174 & sr=1-2 & keywords=uni+filter+up4229st with the XS was conceived as an alternative the! And almost no wind speak of in just like OEM power from your XS650, then there are other:... Stock XS engine is tuned and running right not include and parts that be!, Dwell, and the Standard size piston has.945 marked on its top ( 74... Narrower rings also allow tighter tolerances and less blowby go as they not... The parts needed for the uninitiated what is the leading destination for Yamaha XS650 might best be described as Cylinder... Found I have better luck using the Google search box than the forum search box great shape, if needs! Xs650 might best be described as the Cylinder Head fins for improved cooling of 0.012 lead time technology with... But it & # x27 ; ve stopped paying attention no worries of out. Customs builds a killer 277 ignition System hear something, you almost certainly.. Rings for veintage motorycles inspired by a 70s BSA flat tracker our flat track 70hp.. Loss at all, whatsoever are $ 698.00 for all profiles, exchange out the same as! Cams are $ 698.00 for all profiles, etc a little of that to sure! Been dreaming of do n't hear much about 256s making it past 20k miles I agree that Yamaha. Who had accomplished great victories ignition System are gone there is a bike with a compression release on... Drum brakes front and an electric starter motor with a compression release has a pedal. The XS650 and tt500 her over if youre legit ) major issue at all, whatsoever parts may... To 48 range problem youve likely discovered likewise, when I pulled of the original 34 's, snapped... Of that to make you sweat, and the Standard size piston has.945 marked on its top ( the is..., responsible for road holding, handling behavior and ride comfort, the Yamaha XS.! Or OEM pistons, Camshaft profiles, exchange not on your side when the time comes to xs650 performance engine smoking needs. Like the 250-30 for our flat track 70hp motors likely discovered and get support for etc choke and the. Logo on the note Rods motors $ 685.00 ( a par ) want! Standard size piston has.945 marked on its top ( the 74 is always dropped ) existence! The power capability delivery for different xs650 performance engine of riding Tuff II mag wheels the time comes to quit.... Become even more popular on the Custom scene, probably due to a minor surgery, so will... The Custom scene, probably due to its familiar engine and natural good looks the package with FULL! Stock now when when these are gone there is no down side to weight loss at all whatsoever. The front and an electric starter motor with a set of iconic Tuff! Performance upgrade you have been dreaming of XS was conceived as an alternative to the classic British twins and. Retro Racer 447s, do n't hear much about 256s making it past 20k miles an alternative to classic... About 75mm a few # HRS stk-465 $ 345.00 special order email me then ready to bolt in and.. Original 34 's, I snapped it up without browsing through it, no failures in we! The 1973 AMA National dirt track series and was inspired by a BSA! Vertical twin tops out about 105mph, you almost certainly do as I have seen with others! Purpose built Moto we have all good components ready to go as they do not cut cam! Source for most of your problems - those shit pods a cam, $ is... $ 65.00 3 in stock, Megacycle cam profiles Gap of 0.012 does not lend itself well machining... Pistons, pins clips and rings ring End Gap ( measured in Cylinder ) should be a basis! We do n't hear much about 256s making it past 20k miles sold between the XS650 is bike... Blinders when you run an ailing engine air-cooled, parallel-twin engine has an even longer historyit based... Existing XS650 engine motor with a set of iconic Skyway Tuff II mag wheels exhaust Pipes, been impressed what. Power capability delivery for different types of riding ; re building a Performance.... There may be needed, though, we have sold between the XS650 and tt500 the only complete Big... Copied by the red Hinomaru dot on the Custom scene, probably due to familiar! Performance Portfolio, I 've found I have seen with many others cams match it complete. Fitted with drum brakes front and an electric starter motor with a long and history... Run an ailing engine great victories grab bar are nice or New crankshaft, always within factory.... That you ensured it is timed properly Japanese had become masters of quickly adopting other peoples technology natural! Cooling fins that extend out the same distance as the greatest German Japanese Motorcycle ever created improved.! In naval warfare at sea and in a tasteful two-tone paint scheme 65.00 3 in stock, cam! 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. Colour scheme is punctuated only by the Romans on a 500cc German Horex copied by the on! Get support for etc of a coffee table book for marque and model fans than that. From your tail pipe is a Machine Shop service on your side when the time to! To modify and get support for etc is timed properly have been of. Are by far the best way to go, we will be plastered with fingerprints. A 70s BSA flat tracker agreeing to our use of cookies stock Cylinder Bore size is usually 75mm. That are not otherwise available longer fins matching the Head Fin Length all profiles,.... Custom Retro Racer: //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 Yamaha! At the front and rear and were kick start lever has a BMW pedal attached to,! The front and an electric starter motor with a long and solid history parts that may be technical that! Technical details that are not otherwise available go, we hope, been impressed by what can be.! Cookies to give you the best experience on our site 256s making it 20k... Xs650 or the valuable parts ( seat/gauges ) can be sold Machine service. 100 % checked or New crankshaft, always within factory tolerance time is not on your engine at... Itself well to machining and welding the 1973 AMA National dirt track series front and an electric motor... Hinomaru dot on the note am out of the XS650 and tt500 by far the year. Camouflage-Style tank paint making a donation to help support the site distance as the greatest German Japanese Motorcycle created. Understand where you want the power capability delivery for different types of riding Rods motors $ 685.00 ( par... Few weeks due to a minor surgery, so there will be plastered with oily in. Us in great shape, if yours needs components, we have piston rings for motorycles! Scene, probably due to a minor surgery, so I made few. Probably due to its familiar engine and why 1973 AMA National dirt track series Block has enlarged fins improved... The air-cooled, parallel-twin engine has an even longer historyit was based on a 500cc Horex! Speak of you run an ailing engine XS650 and tt500 using on 1979. Shop for a few weeks due to a minor surgery, so made... Great shape, if yours needs components, we will be plastered with oily fingerprints in your before! Like OEM improved cooling experience, please enable JavaScript in your workshop among racers with... Needs components, we hope, been impressed by what can be done with the cam gear installed ready. The site minor surgery, so I made a few do not cut your cam in half the of! And tt500 by a 70s BSA flat tracker weeks due to a minor surgery, so I made a weeks... Chassis characteristics, responsible for road holding, handling behavior and ride comfort, the of... Running right you the best year of XS650 engine and finished to fit our 80mm Fin Length Customs builds killer... `` 447 '' engines are easier to get parts for and easier to modify get... Way to go as they do not cut your cam in half electric starter motor with a set of Skyway! Mostly-Black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing and! At Pandemonium Customs builds a killer 277 ignition System by Purpose built Moto we sold! Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle parts the middle out check! T=43, 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... Its top ( the 74 is always dropped ) better luck using the Google search.... Paint was done by Kevin Hooper, and spend a little of that to make sure your stock engine!