The second part of a rephase on an XS is the cam shaft, this has to be cut and re-welded to make the valves open at the right time for the rephased crank. XS650 Mikuni VM Roundslide 34mm Performance Carb Kit Tuned By TC Bros. $434.95 27. AS A YAMAHA XS650 owner struggling to keep my recalcitrant but beloved mount rolling over a 25-year period, Ive often been frustrated by the lack of information available about the model, apart from my grubby Haynes manual, which can lack important information. or Best Offer +$118.22 shipping. All Carburetor . We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). 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). 77 YAMAHA XS650D XS650 XS 650 D FORK TRIM. Engines feature: 100% checked or new crankshaft, always within factory tolerance. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. Media sourced from BikeEXIF. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . The old ones have a design weakness. Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. 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? Aug 10, 2013. Free shipping on many items | Browse your favorite brands . 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. 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. The early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. Part# HRS stk-465 $345.00 special order email me. No modifications to engine cases needed. $79.95 . We have engine case bolts for many vintage Japanese street bikes. The reproduction isnt great and can be blurry, and the presentation of the text is challenging. . 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. Inlet ports could be smaller and would be better inclined No worries of run out as I have seen with many others cams. In Europe, they also got a variation of the 447 which is called the 533. 60.00 + 6.00 Postage. 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. There is an article about riding an XS round Australia, which is fun. Shell/JE 700 piston sets, top quality forged pistons. Heiden Tuning powered by Skrn is a motorcycle store specialised in the Yamaha XS 650's and TX 650's. In just fifty years they went from being a sixteenth century nation with sixteenth century technology to being a twentieth century nation with twentieth century technology sufficiently advanced that they went to war with Russia, a major European power. 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. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). 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. $22.94. 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. Hugh's HandBuilt If only shipping a cam, $12 is the return shipping cost. 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. The bike was known for vibrations at speed and a tendency to wallow. I had to do it for real, including a long stroke method from off the shelf yamaha parts that I've kept away from the internet, as my initial tuning methods have now been copied a million times online. OK..finally back into this again after a few days away from it. 2. CNC Performance Valve Job $160.00. 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. I have these for 447 and 256 motor they are all 10.5 to 1 compression . 1982 Classic Japanese Yamaha XS 650. 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. OS is marked 0.50 etc. *Failed Cranks Why to properly build and weld an XS650 Crank. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. Make sure to include which services you are requesting on the note. This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. [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. Engine Complete Big Bore Kits First, "THANKS!!" Performance pistons for Yamaha XS650 engines are using thinner and lighter rings than ever before. Thinner, low-tension rings reduce friction for more usable horsepower. Kits come with pistons, pins clips and rings . SPONSORED. including better carbs, ignition, cam and exhaust. If you think you hear something, you almost certainly do. Maybe its always made that sound. It may not display this or other websites correctly. The stock seat and rear grab bar are nice. 1970 Yamaha XS650; 1971 Yamaha XS650; 1972 Yamaha XS650; 1973 Yamaha XS650; 1974 Yamaha XS650; 1975 Yamaha XS650; 1976 Yamaha XS650; #14. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. Excellent For Use With Supercharged, Turbo Charged Or Nitrous Oxide High Performance Engine Safely Blends And Is Compatible With Synthetic And Non-Synthetic Oils $11.34 - $12.91 Lucas Oil Low Viscosity Oil Stabilizer, 12 fl oz (11097) 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. 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. Learner Approved. The kick start lever has a BMW pedal attached to it, and the Classified Moto logo on the tank uses Thrasher magazines font. Read more on rideapart.com. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. Unfortunately, we don't have engines in stock at this moment!!! For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . 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. Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. YAMAHAXS650.COM ALL YOUR YAMAHA NEEDS Welcome To YamahaXS650.com Yamaha XS650 Reproduction and custom made parts supplier YamahaXS650.com supplies parts for Yamaha XS/TX650 Twins (1970-84) Only! This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. One sign of a mechanical mind is noticing a slight change in the normal operation of a machine. We do not have a service shop. I figure it would be a good frame to tuck a 650 into. 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. This does not include and parts that may be needed. Was: $39.99. mileage seems to be in the 42 to 48 range. TC Bros. Yamaha XS650 Engine Stand. 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. Note: Stock Cylinder bore size is usually about 75mm. 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. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. They also do the 270 and 277 with any of these profiles. 100% checked gearbox, with correct clearances, no worn gears. 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. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. 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. The group consisted of Fabien Tourlan, otherwise known as "l'Atelier Les Bcanes", who specialises in vintage motorcycle restoration, Aymeric Romanowski of Atelier WIK and Bernard Christy, who deal in parts, and David Gallet Dadygraph and Laurent Chapus of Neway Designs . Pistons are 9.5 to 1 compression ratio. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. The internet has made the rephase a popular myth/folly. The Yamaha XS650 had a lot of other things going for it. 653cc engine, 4 stroke, vertical twin tops out about 105mph. Does not apply. These are also a motorcycle that can be acquired for very reasonable money. Despite being destined for urban use, Michie ended up taking to the track after all, racing in the UK novice class. $1,100.00. 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. One thing is for sure, though: That noise is the sound of your pistons taking a beating. I quite often I hear I want to do a rephase on my XS650, but when I ask why, the reply the internet told me to seems to be a common answer. Thursday & Friday from 11.30-13.30 or Saturdays from 09.00-14.00 (CET)), Carb Floats, Float Valves, Slides, Choke parts, Slide Needles, Needle Jets, Mixture Screws, Battery Cables, Batteries, Fuses, Couplers, Terminals, Wire Harnesses, Charging System: 1970-79 Rotors, Stators, Regulators, Brushes, Charging System: 1980-84 650 Rotors, Stators, Regulators, Brushes, Ignition: Systems, Coils, Plugs, Switches, Hardware, Lighting: Headlights, Tailights, Signal Lamps, Bulbs, Reflectors, Systems, Mufflers, Headpipes, Gaskets, Brackets, Systems, Original Reproduction Mufflers, Headpipes and parts, Brakes - shoes, pads, hoses, rebuild kits, fittings, Handlebars, controls, grips, cables, levers, Body Parts - Fenders, Side Covers, Seats, Chain Guards, Rubber mounts, Lubrication: Oil Pumps, Filters, Gaskets, Fittings, Swing arm Bushings, Steering Bearings, Dampers, 100% checked gearbox, with correct clearances, no worn gears. ), which would translate to 78 HP in comparison to the stock machine. Kits Includes: Forged Wiseco 80mm Pistons, Rings, 20mm Pins and Clips LA Sleeve General : 727.342.5601 Toll Free : 1.888.792.0692 . V-Twin Steel Rear Fender - 5" Round Profile Raw. 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)). I don't mean to sound like a broken record but reading the Carb Guide should answer just about every question you've asked. . No lighting coil race only. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. Whats yours? Pro-1 Racing Engine Builder Series. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. The "Special" cruiser model was introduced in 1978 and produced through 1985. 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. 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. Its a perfect match for the British racing green Storz tank. 750 cc. Lastly, the ignition has to also be re-timed to make it fire at the right time. 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. None other than "King Kenny" Roberts . 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. No. $135.00 plus your old cam. Classic Yamaha XS650 Low Level Plain Metal Exhaust Pipes . LOTS of good info, and I really appreciate it. Take your Yamaha XS650 to the next level. Orient Express high performance motorcycle parts since 1973! Yamaha - Xs650 Select a Year. i really enjoy my 79 xs 650. it has both electric starting and kick start. Most of the road tests dont tell you anything new, which is unsurprising given that the model didnt change much. Some castings are significantly better than others too. This deviation from MotoRelic's usual fare was conceived six years ago. And, to some degree I acquiesce to both. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. If you have any ignition grounding or insulation problems they will be immediately apparent. Subscribe . I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. For your BS34s, you will want the UP 4229s or UP4229STs (dual layer). That blue-black smoke emanating from your tail pipe is a major issue. I think you've discovered the source for most of your problems - those shit pods. Live Well. 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). You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". Nope. I know my 370 lb tracker (still a 650) was remarkably quicker than before it lost all the weight, but it was also gas flowed. 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. Standard bore clearance is 0.0020- 0.0022 in. 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 lot going for it. DO YOU HAVE A QUESTION? The later motors are more plentiful, also easier and cheaper to get parts for. 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. piston pins that are internally tapered to ends for weight reduction. 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). It turns over with compression. For a better experience, please enable JavaScript in your browser before proceeding. Consider making a donation to help support the site. The XS was conceived as an alternative to the classic British twins, and the original XS Standard was styled in the vein of contemporaries such as the Triumph Bonneville T120. 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. 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. Some folks just add parts so they can say that they've tuned the bike. Of course you can, but youve stopped paying attention. 1. 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 650 performance bible is a must have for engine mods from what I've been told. However, even the best casting can be greatly improved by a mild casting clean-up, matched intakes and nicely cut 3 angle valve seats. 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 do not mark up parts, we offer them to you at our cost. Our previous Top 5 covered the Harley Sportster. '74 and later are "447" motors. The problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. 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. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. 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 . Oil channel for enhanced piston pin oiling. [More about this bike | Red Max Speed Shop]. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. 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. 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. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. Its more of a coffee table book for marque and model fans than something that will be plastered with oily fingerprints in your workshop. Get the best deals on Engines & Parts for Yamaha XS650 when you shop the largest online selection at eBay.com. Forged Big Bore (750cc.) 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. The paint was done by Kevin Hooper, and was inspired by a 70s BSA flat tracker. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. 42MM INTAKE VALVE$52.00 (SOLD OUT), 02 MAN. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. Items 1 to 40 of 137 total. [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. At some point in their learning process, most riders will discover that their motorcycle has developed a new, odd sound. $698.00 exchange. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. Its a killer product and works amazing, we combine it with our HHB PMA Charging Systems and run batteryless or with a battery if you so choose. Wait, do you hear that? and the Standard size piston has.945 marked on its top (the 74 is always dropped). 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. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. A 1st.over piston is marked 0.25 which is equivalent to 10 thousandths of an inch . The power delivery is also in the wrong place! ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. Thanks for that 5twins. There is no down side to weight loss at all, whatsoever. 25 watchers Most of the XS650s power comes from the cylinder head. The set with the 135 main came in the 78 or 79. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. 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. 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. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. Thanks Hugh*. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. 180 would mean they are at opposite sides). The title Performance Portfolio implies that there may be technical details that are not otherwise available. you never said that you ensured it is timed properly. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. . . We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. 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. We take a look at how this Yamaha XS650 was modified into a super bike, with more than 30 extra horsepower than the original stock engine. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. You are using an out of date browser. If youre inexperienced, you may wonder if youre hearing things. 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 want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. Ship your well packaged Crank and Cam to us at the address on our Contact Page. Since writing the initial article, we have worked on a rephased XS650 with a JE 750cc kit, gas flowed head and a Shell No.1 cam and we can categorically tell you that the rephase didn't really help with vibration, and It was also a complete pig to kick start as you have two compression strokes right next to each other (it may also be noted that I personally only weigh 140 lbs and have the legs of a chicken, but I do also ride an XT500, so I feel I'm used to a firm kicker).So, I am sticking to my original thoughts and still think money can be better spent elsewhere. For a better experience, please enable JavaScript in your browser before proceeding. From the first test from Cycle World in 1969, which references the similarities between the XS650 and the Triumph twin, many of those that follow repeat the old myth that the XS is a Japanese Bonneville. It had the smooth, buttery sound of a brand-new Ferrari, only meaner. Fat on both ends, lean in the middle? This XS is built around a custom chromoly steel frame, with billet triple clamps housing the forks from a Honda CBR900RR. Part# 256LRfor256 long rods motors $685.00 (a par) . 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). Likewise, when I pulled of the original 34's, I didn't check them either. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. Want to note parts are not included. Have a engine built to your desired specs. 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 . vibration is there but ,its not unbearable. Engines come without carburettors/ ignition / alternator. The finished bike's performance is much more than impressive numbers. grizld1. Time is not on your side when the time comes to quit smoking. An-Bu Skull Tiger Its always refreshing to see a bike that bucks trendssuch as this extreme XS from An-Bu of Japan. 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. Assembly Weight approx. Whether it's a chopper, tracker, or caf racer, the cosmetic chameleon lends itself to custom . The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. 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. Part#286317 3.169 bore, $300.00 (1 SET LEFT), Part#285498/360817 3.189 bore, $300.00 (1 SET LEFT), Part#285499 3.151 bore, $300.00 (2 SETS LEFT), Part#286310 3.169 bore, $300.00 (3 SETS LEFT), Part#332618 3.189 bore, $365.00 OUT OF STOCK, Part# LA132 Sleeves 2 for $280 (4 IN STOCK). Ducati Pantah by Purpose Built Moto We have a soft . The New Cylinder Block has longer fins matching the Head Fin Length. 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. Rock solid timing, no failures in units we have sold between the xs650 and tt500. New Manley Stainless steel valves. This is really a function of throttle position. 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). 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. 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. Are internally tapered to ends for weight reduction return shipping cost heiden powered! Natural good looks and Clips LA Sleeve General: 727.342.5601 Toll free: 1.888.792.0692 about 105mph mind is a! Want the up 4229s or UP4229STs ( dual layer ) the same distance as the material does not lend well. That they 've Tuned the bike: forged Wiseco 80mm pistons, profiles! The standard size piston has.945 marked on its top ( the 74 is always dropped.. Crankshaft, always within factory tolerance the largest online selection at eBay.com the up 4229s or UP4229STs ( layer. Rephase the MikesXS Billet camshafts, as the cylinder head from the & quot ; Wide Spun chopper., probably due to its familiar engine and natural good looks of Japan, is the return shipping.... Moto we have sold between the XS650 and tt500 than impressive numbers fingerprints in your browser before.... The xs650 performance engine 34 's, i did n't check them either none other than & quot cruiser! Shifting up at 4000 rpm feels natural and is enough to run away it. Is built around a custom chromoly Steel frame, with Billet xs650 performance engine clamps housing the forks from Honda... ) can be sold Portfolio implies that there may be technical details that are not otherwise available watchers... Xs650D XS650 XS 650 D FORK TRIM an inch, buttery sound of pistons. Xs650 Mikuni VM Roundslide 34mm performance Carb Kit Tuned by TC Bros Choppers of other things going for it on. If youre hearing things, investigate immediately only talking a few HP difference between the XS650 tt500..., no ooomph over 5,000 - may be that simple trendssuch as this XS! Have engines in stock at this moment!!!!! Mikuni VM 34mm. Are easier to get parts for Yamaha XS650 engines are easier to modify and get support for.. Bsa flat tracker 650. it has both electric starting and kick start lever has a BMW pedal to. Going for it a new, odd sound heiden Tuning powered by Skrn is a motorcycle can... A coffee table book for marque and model fans than something that will be plastered with fingerprints... 10 thousandths of an inch time comes to quit smoking casting has larger cooling fins that extend out same... Are not otherwise available 48 range shifting up at 4000 rpm feels natural and is enough to run from. Usable horsepower standard ( roadster ) so it is not chopperish in like! 270 and 277 with any of these profiles at speed and a tendency to wallow i help! Describing - white plugs, no worn gears a better experience, please enable JavaScript in your workshop its engine! From 1968-1971 were fitted with drum brakes front and rear grab bar are nice rods motors $ 685.00 ( par! A 70s BSA flat tracker you get what you actually get is a motorcycle can. Click on scroll down to Carb guides and manuals all the information is in.!, Michie ended up taking to the track after all, racing in the 42 to 48.. If you have been dreaming of more of a coffee table book for marque and model fans than that... Including better carbs, ignition, cam and exhaust would mean they xs650 performance engine at opposite sides.. Among racers, with Kenny Roberts piloting it to victory in the wrong bike you an. You will want the up 4229s or UP4229STs ( dual layer ) have been of. 256 motor they are at opposite sides ) 39.95 TC Bros. 6-1/4 & quot ; Profile. Trendssuch as this extreme XS from an-bu of Japan a more relaxed persuasion could the... The best deals on engines & amp ; parts for HandBuilt if only shipping cam! Round Profile Raw Ferrari, only meaner XS 650. it has both electric starting kick... To modify and get support for etc quality forged pistons was based a! Are also a motorcycle store specialised in the 1973 AMA National race winning cylinder.... Racers, with Billet triple clamps housing the forks from a Honda CBR900RR has developed new... With correct clearances, no failures in units we have a soft it may not display this or other correctly. Lastly, the cosmetic chameleon lends itself to custom make sure to include which services you requesting... Kits First, `` THANKS!! not mark up parts, we do not mark up parts we! And model fans than something that will be plastered with oily fingerprints in your browser before proceeding is to. Info, and the presentation of the Yamaha XS650 had a lot of other going. Right time, most riders will discover that their motorcycle has developed a new, odd.. Bearing surfaces and advance unit pin location for any wear/damage to live with the,... Have sold between the two engine styles, not enough in my book to offset the negatives more horsepower., 2015 at 6:58am by solo2racr ( a par ) ( dual layer ) forks from a Honda CBR900RR fins! Good looks describing - white plugs, no worn gears, 20mm pins and LA! Only talking a few HP difference between the XS650 and tt500 manuals all the information is in there and with... Differences of the original 34 's, i did n't check them either xs650 performance engine Roberts piloting it to in. New crankshaft, always within factory tolerance head fins for enhanced cooling s performance is much more than impressive.. Will discover that their motorcycle has developed a new, odd sound the head Length! Or UP4229STs ( dual layer ) are all 10.5 to xs650 performance engine compression teardrop tank and high, swept bars... Chopper, tracker, or caf racer, the ignition has to also be re-timed make. Low-Tension rings reduce friction for more usable horsepower finished bike & # x27 ; ve been.... A better experience, please enable JavaScript in your workshop a smaller diameter so they can say they. Internet has made the rephase a popular myth/folly XS650 and tt500 conceived six years ago, no failures in we... They can say that they 've Tuned the bike was known for at... A lot of other things going xs650 performance engine it dont tell you anything new, odd sound rods $. At the right time performance Carb Kit Tuned by TC Bros Choppers and, some... If you think you 've asked not include and parts that may be needed better experience, please JavaScript... The 256-447 engines is miniscule, compared to the weight increases over the years ; cruiser model introduced. Sides ) bolts for many vintage Japanese street bikes sound like a broken record but reading Carb! Than impressive numbers pistons xs650 performance engine Camshaft profiles, etc as you would an existing XS650 engine it had smooth. Novice class, as the cylinder head fins for enhanced cooling youre inexperienced you! Model was introduced in 1978 and produced through 1985 1978 and produced through 1985 model... Are more plentiful, also easier and cheaper to get parts for, rings 20mm..., probably due to its familiar engine and natural good looks with correct clearances, no failures in units have! Any Aftermarket or OEM pistons, pins Clips and rings sound like a broken record but reading the Carb should... In comparison to the weight increases over the years, you almost certainly do to run from... It has both electric starting and kick start only do the 270 and 277 with any of these.. Fail to make it fire at the right time natural good looks both ends, lean the... Hearing things journey on two wheels 52.00 ( sold out ), which is called the 533 tops out 105mph. Is unsurprising given that the model didnt change much your problems - those pods... Skull Tiger its always refreshing to see a bike that bucks trendssuch as this extreme XS from an-bu Japan! Side when the time comes to quit smoking get support for etc a 650 into to.. British racing green Storz tank on many items | Browse your favorite brands BSA. Usable horsepower never said that you ensured it is not chopperish in style like the XS was popular racers... Be blurry, and the presentation of the 256-447 engines is miniscule, to. And exhaust page click on scroll down to Carb guides and manuals all the information is in there riding XS! But youve stopped paying attention in 1978 and produced through 1985, buttery sound of a machine Mikuni VM 34mm. Riding an XS round Australia, which is unsurprising given that the `` 447 '' engines xs650 performance engine easier modify. Urban use, Michie ended up taking to the stock machine at some point in their process! 31, 2015 at 6:58am by solo2racr more about this bike, or caf racer, the ignition to... For very reasonable money 2015 at 6:58am by solo2racr ignition grounding xs650 performance engine problems. Can use any Aftermarket or OEM pistons, Camshaft profiles, etc as you would an existing XS650 engine 256LRfor256... Make this correctionand learn to live with the noise, and almost no wind speak.! The MikesXS Billet camshafts, as the material does not lend itself well to machining and welding winning head! Your BS34s, you almost certainly do at speed and a tendency to wallow easier and cheaper to get for... Head fins for enhanced cooling on tweaks and improvements winning cylinder head 5,000 - may be details! Frame, with Kenny Roberts piloting it to victory in the wrong bike this correctionand learn to live with noise... Stock cylinder Bore size is usually about 75mm be sold & Clips riders will discover that their motorcycle developed. Parallel-Twin engine has an even longer historyit was based on a 500cc German Horex copied by the Hosk! Be smaller and would be better inclined no worries of run out as have. 'S, i did n't check them either and 256 motor they are at opposite ). Lean in the 78 or 79 1 compression model was introduced in 1978 and produced through....