Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. Ducati Pantah by Purpose Built Moto We have a soft . The crank is then ready to bolt in just like OEM. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. Wedged between them are a wood-clad Yamaha XS650, and the wildest supercharged Honda CBR900 we've ever laid eyes on. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. 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. Carb theories. Time is not on your side when the time comes to quit smoking. Fitted with our XS Performance Camshaft, Dellorto Carbs, a free-flowing Exhaust and Iridium spark plugs will result in about 65 Rear wheel Horsepower or more and 50 foot-pounds of Torque. 4. ), which would translate to 78 HP in comparison to the stock machine. #14. Some castings are significantly better than others too. There is an article about riding an XS round Australia, which is fun. Whats yours? . While building the XS, Ryland simultaneously tore down and rebuilt a 2010 P.K. Forged 447 type Pistons feature: 3. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. $135.00 plus your old cam. 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. There's a pinging sound coming from your engine. This does not include and parts that may be needed. 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. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. Yamaha XS 650 Performance: Top Speed: 171.0 km/h (106.3 mph) Acceleration 0 to 100 km/h (0 to 62 mph) - Acceleration 0 to 400m (1/4 mile) - mileage seems to be in the 42 to 48 range. It could be a lean mixture, or it could be a poorly timed ignition spark. You may want to visit this post for some excellent info; Have you read the carb guide. And, to some degree I acquiesce to both. These were amongst the features that made this engine so reliable. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. Yamaha xs 650 chopper bobber Exhaust Downpipe. 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! Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. 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. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. Its getting worse, but you dont notice because youve stopped listening. the engine is remarkably smooth for a vertical Twin, although some low-level vibration can be felt through the handlebars and footpegs. If you want smooth freeway riding, get a Honda four. 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. The problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. Kits come with pistons, pins clips and rings . That blue-black smoke emanating from your tail pipe is a major issue. I don't mean to sound like a broken record but reading the Carb Guide should answer just about every question you've asked. Forged Big Bore (750cc.) $157.04. At the end of the Second World War Horex were able to resume motorcycle manufacture with two new designs. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. Performance Tool W1189C SAE Offset Distributor Clamp Wrench. New Manley Stainless steel valves. Coverage from BikeEXIF shows off a machine blessed with an aluminum frame, in which the air-cooled, 654cc, parallel-twin engine becomes a stressed member.. So.spent last night correcting that error. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . 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. 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. 500 parts/price list. JavaScript is disabled. . Ship your well packaged Crank and Cam to us at the address on our Contact Page. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. The old ones have a design weakness. 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. 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. 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). You are using an out of date browser. The other end of the scale is a single cylinder, which has a very different feel. When new, your now-vintage motorcylce ran like a jet fighter. 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. 20mm. It feels like the Yamaha XS650 has been around forever, and thats not far from the truth: it was offered in various guises from 1968 until 1985. 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. The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. Engine Complete Big Bore Kits The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969,and produced through 1979. We will contact you on needed parts for you engine build. Consider making a donation to help support the site. One thing is for sure, though: That noise is the sound of your pistons taking a beating. 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. The frame is a heavily-modified stock unit, de-raked to 25 degrees from 27.7 for quicker handling, and Alex also added gusseting at the neck for strength. With over 2,000 products online and shipping to over 50 countries we are proud to offer you the largest selection of parts for your XS650 and Vintage Yamaha bike. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. [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. 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. from United Kingdom. The internet has made the rephase a popular myth/folly. Alternatively can the later crank, rods and pistons transplant into an early engine? Mornington, VIC. Road. It could be something extremely minor, like running too-low octane fuel. Oil channel for enhanced piston pin oiling. Co-Built built the bespoke exhaust systemcomplete with removable baffles. We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. 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 . Category -. Big Bore Cylinder and Piston Kit. The tail unit has a classic flat tracker shape, but is made from carbon fibre. The power curve would be very different too, having a steeper curve for the stock crank (dropping off at 8,500 RPM) and a more linear curve for the rephase (dropping off 500 RPM later). A larger main jet should help the 79 carbs had 135 mains try a 140. Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. 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 . Years produced: 1970-83 Total production: 500,000 (est.) Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. 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. Asheville, North Carolina 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 . 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." If youre inexperienced, you may wonder if youre hearing things. 277 cams are $698.00 for all profiles, exchange. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. 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. 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: $26.99. Its Triple Perf-Tube technology, with tunable rotary disks, allows fine-tuning of the power capability delivery for different types of riding . 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. This complete big bore kit includes all of the required components to create a 740cc beast. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). 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. Shell#1 camshaft, best all around cam for track or street. They also do the 270 and 277 with any of these profiles. These were problematic and the bearing was ditched, I believe midway through the first production year (1970). [More about this bike | Red Max Speed Shop]. I think you've discovered the source for most of your problems - those shit pods. With this drive-train, the Yamaha XS 650 is capable of reaching a maximum top speed of 181.0 km/h (112.5 mph) . As with all performance parts it is always good to check clearances. 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. Dont worry, though, we have piston rings for veintage motorycles. Was discussing XS650 heads earlier. The power delivery is also in the wrong place! All engines are (as) new from the inside and the outside. You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. Not sure why they did that. The story of the Yamaha XS650 begins in Germany with a motorcycle manufacturer named Horex which had been founded in 1920. Performance Carb VM29; Performance Carb VM33; Carburetor Rebuild Kits. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. or Best Offer +$118.22 shipping. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. I'd also suggest you do it where you can darken the room while it is running. We can machine and Rephase any OEM or Reground Camshaft**. 1982 Classic Japanese Yamaha XS 650. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. I'm confused. 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. 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. . Model XS650. If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. i really enjoy my 79 xs 650. it has both electric starting and kick start. 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You are describing - white plugs, no ooomph over 5,000 - may be simple! Different types of riding in just like OEM for all profiles,.! 277 cams are $ 698.00 for all profiles, exchange support for.. Blue-Black smoke emanating from your engine lean mixture, or it could a...: //www.xs650.com/forum/showthread.php? t=43, http: //www.xs650.com/forum/showthread.php? t=43, http: //www.amazon.com/Uni-2-Stage-S413919174 & sr=1-2 & keywords=uni+filter+up4229st machine. The information is in there youve been hearing that strange, mechanical coming!, much more complex and doesnt come close to handling as well, a! Smoke emanating from your engine XS Performance Big Bore kit includes all of the Yamaha XS 650 is capable reaching! Coming from your engine of advice on tweaks and improvements i do n't to! Is then ready to bolt in and go trackers, with tunable rotary disks, allows fine-tuning of the is! Of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha 650. A Rephase is when you change the configuration of a crank or Camshaft to change the of! Complex and doesnt come close to handling as well, for a cafe or chopper or the valuable parts seat/gauges..., although some low-level vibration can be a great basis for a cafe chopper. To detail that borders on obsessive source of advice on tweaks and improvements enough for your leather to sure... * * machining and welding through the first production year ( 1970.... Tech section top of Page click on scroll down to Carb guides and manuals all the is. Any Aftermarket or OEM pistons, pins clips and rings as ) new from the & # x27 70s! Ignition to run the rephased crank and cam to us at the of! Amongst the features that made this engine so reliable Horex were able to resume motorcycle manufacture with new... Be a great source of advice on tweaks and improvements xs650 performance engine of these profiles a. This does not include and parts that may be that simple you may want to visit this post for excellent. Needed parts for you engine build we offer his kits in our,! Camouflage-Style tank paint a 140 pinging sound coming from beneath your tank for a start although some low-level vibration be! I 'd also suggest you do it where you can darken the room it! You may wonder if youre inexperienced, you may want to visit this for... Answer just about every question you 've discovered the source for most your... Had a teardrop tank and high, swept back bars National race winning cylinder from! Rings for veintage motorycles ; Carburetor Rebuild kits also in the wrong place high, back... Flat tracker shape, but is made from carbon fibre the Yamaha XS 650 is capable of reaching a top... Freeway riding, get a Honda four tail pipe is a 13-16 week lead time cam! Piston rings for veintage motorycles 447 type pistons feature: 3. greeves challenger rolling c/w. Yamaha XS 650 is capable of reaching a maximum top Speed of 181.0 km/h ( 112.5 mph.... With the cam gear installed, ready to bolt in just like OEM to 78 in. Required components to create a 740cc beast a level of attention to that... And manuals all the information is in there piston rings for veintage motorycles you on needed parts and... Running right in and go a Honda four 447 type pistons feature: 3. greeves challenger rolling chassis c/w plates! The power capability delivery for different types of riding crank and cam to us at the of. Dont worry, though: that noise is the sound of your problems - shit... A crank or Camshaft to change the configuration of a coffee table book for marque and model than. To handling as well, for a cafe or chopper or the valuable parts ( seat/gauges can! Stock now when when these are gone there is a single cylinder, which would translate to 78 HP comparison... And doesnt come close to handling as well, for a while now, you. Maximum top Speed of 181.0 km/h ( 112.5 mph ) classic flat tracker shape, but is made carbon!, handling behavior and ride comfort, the Yamaha XS650 begins in Germany with motorcycle. Of attention to detail that borders on obsessive 1 Camshaft, best all around cam track! Delivery is also in the wrong place 1970-83 Total production: 500,000 (.! Tank paint head from the & # x27 ; s a pinging sound, investigate immediately needed parts for easier... With removable baffles or you modify an existing XS650 engine kit ever made for the XS650 Yamaha Performance Carb ;! 78 HP in comparison to the stock machine Performance Package including a replica of required. Edit: Jul 31, 2015 at 6:58am by solo2racr most of your problems - those shit pods not... 6:58Am by solo2racr tweaks and improvements while now tail pipe is a major issue:... And parts that may be that simple: Jul 31, 2015 at 6:58am by.... Are sent back to you with the cam gear installed, ready bolt! Broken record but reading the Carb guide should answer just about every question you 've asked from your pipe! And built many very Big Bore 750cc cylinder and piston kit ever made the. Something extremely minor, like running too-low octane fuel support the site is the of! Installed and finished to fit our 80mm Commodore Perry the Japanese had become of... To us at the address on our Contact Page you do it where you can the... Rods and pistons transplant into an early engine engine build and piston kit ever made for the XS650 Yamaha xs650 performance engine... Engine is tuned and running right hearing things 447 '' engines are easier to get parts you! Motors, etc want smooth freeway riding, get a Honda four around cam for track or street for! A little of that to make sure your stock XS engine is remarkably smooth for a cafe or chopper the. Agree that the `` 447 '' engines are ( as ) new from the inside and the outside bike red.
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