TC Bros. Yamaha XS650 Engine Stand. The Japanese are an interesting people. + Postage. So, you gear up and head out the door. 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. Most of the road tests dont tell you anything new, which is unsurprising given that the model didnt change much. I'd also suggest you do it where you can darken the room while it is running. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. Return Shipping (in the Continental US) is a flat $45 if out of the country contact us and well get a rate for you. 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. Its a beautiful day for a ride. Note: Stock Cylinder bore size is usually about 75mm. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. 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? Nope. The Stage I bike is good-handling, fast, responsive . 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. Pistons. The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. Kit Fits: 1974-84 447 Type Engines. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. Orient Express high performance motorcycle parts since 1973! Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. SPONSORED. The stock seat and rear grab bar are nice. Carb theories. We only use cookies to give you the best experience on our site. Fabricate a 2-1 exhaust and either Mikuni VM or Keihin PWK carbs. As with all performance parts it is always good to check clearances. Want to note parts are not included. $22.94. Frame and engine number: S650-007XXX. It had the smooth, buttery sound of a brand-new Ferrari, only meaner. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? 7000 km. 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. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. This is a Machine Shop service on your engine. 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) - Theres a pinging sound coming from your engine. Thus it was that the Yamaha XS650 might best be described as the greatest German Japanese motorcycle ever created. Especially after reading about the excessive wear on the lower piston skirts from rephasing! Too much internet bunkum out there, So Thank You! This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. Model XS650. 4. Showa were in turn bought out by Yamaha in the same year and so Yamaha inherited the Horex engine design as developed and improved by Hosk. Most cranks come to us in great shape, if yours needs components, we will be in touch. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. Yamaha xs 650 chopper bobber Exhaust Downpipe. 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. $226.48. 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. . 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. 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) Whats yours? Once we have all good components ready to go, we rebuild the crank from the middle out. Shell/JE 700 piston sets, top quality forged pistons. 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. I also believe the 447 superior in support and parts availability. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. 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. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. Its common to put on blinders when you run an ailing engine. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. After acquiring a 1978 Yamaha XS650 Jacques pulled together a team of fellow bike enthusiasts to realise his vision. In Europe, they also got a variation of the 447 which is called the 533. I actually did tear down the same motors and tried every combination possible. So.spent last night correcting that error. Ride Fast. 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 XS was conceived as an alternative to the classic British twins, and the original XS . If you think you hear something, you almost certainly do. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. I have these for 447 and 256 motor they are all 10.5 to 1 compression . Our previous Top 5 covered the Harley Sportster. Some folks just add parts so they can say that they've tuned the bike. Dont you hear it? So, that thought in mind, I go forward: Have you cleaned the carbs and checked the float levels. No lighting coil race only. White valve guides standard and .001 over size. Asheville, North Carolina Camshafts are sent back to you with the cam gear . If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. The power delivery is also in the wrong place! 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. ), which would translate to 78 HP in comparison to the stock machine. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. 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. 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. The Yamaha XS650 had a lot of other things going for it. All highly desirable things when you're building a performance engine. The more you counteract what one piston is doing, the smoother an engine will be (like a 4 cylinder, as they are basically two 180 cranks which is the smoothest configuration). Narrower rings also allow tighter tolerances and less blowby. . 77 YAMAHA XS650D XS650 XS 650 D FORK TRIM. The OHC engine and gearbox were of unit construction with the crankcase split horizontally. We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. What started out as a client project eventually became a BMX-inspired homage to SEs legendary P.K. Manufactured originally by Hosk, then having been sold to Yamaha . eBay item number: 404245980833. This also equates to less mid-range torque). Make sure to include which services you are requesting on the note. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. . I think you've discovered the source for most of your problems - those shit pods. Pistons are 9.5 to 1 compression ratio. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. . 180 would mean they are at opposite sides). Wait, do you hear that? XS650 Camshafts are rephased 100% in house as well. All engines are (as) new from the inside and the outside. Was discussing XS650 heads earlier. Forged 447 type Pistons feature: 3. 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! 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. 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. First, "THANKS!!" Kit Fits: 1974-84 447 Type Engines. Some things I'm relatively sure of, others..not so much. By continuing to use the site you are agreeing to our use of cookies. 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! 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)). We like the 250-30 for our flat track 70hp motors. Strawberry Shortcake is about 300 lbs (as it has no swingarm etc. Of course you can, but you've stopped paying attention. We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. The only thing that changes are the ignition, crankshaft and camshaft. These are 1mm over, PART# pRICE, 01 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. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. 1980 Yamaha XS650 Cafe Racer. 25 watchers Its subtle, but its definitely there. Engines feature: 100% checked or new crankshaft, always within factory tolerance. 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. ( 0.050- 0.055mm). 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. Like I said, my experience is very limited. Items 1 to 40 of 137 total. 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. Less weight reduces ring groove pound out. I also believe the 447 superior in support and parts availability. 750 cc. The finished bike's performance is much more than impressive numbers. Yamaha XS650. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. Yamaha Motorcycle & Scooter Frames & Parts without Performance . Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. 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. I'm thinking the title should be "my bike won't pull above 5K" and be done with it. So good to hear someone who actually knows what they are talking about on the subject. Some castings are significantly better than others too. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. $157.04. The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. 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. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. It outperforms any other free-flow bike pipe on today's market. We offer a wide range of XS / TX 650 products, see our webstore. XS 650 Yamaha racing crankshaft by Chris Applebee Engineering we specialise in dynamically balancing & OVERHAULING all motor bike crankshafts If you have . If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. If you actually want more power from your XS650, then there are other ways:Weight loss. 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. Assembly Weight approx. In good shape. The 750cc conversion is always fun. 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. This complete big bore kit includes all of the required components to create a 740cc beast. The "Special" cruiser model was introduced in 1978 and produced through 1985. vibration is there but ,its not unbearable. Classic Yamaha XS650 Low Level Plain Metal Exhaust Pipes . 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. I don't know why. 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. Include a Check, Money Order or Cash*** including return shipping Payable to: Hughs HandBuilt. 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. This is really a function of throttle position. Before the engine work, the redline topped out at 8500, but Hal's happy that with the engine's performance parts, the engine revs easily to 9200 without objection. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. So, I thought I would pose this question myself and try to clarify what it is and what it does in simple terms for those thinking about giving it a go, trying to be as unbiased as I can. Powered by Gasoline and Caffeine. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. This produces effectively a twin cylinder single gobs of torque and low end (practically un-startable with a kick start), but hardly any top end power or ability to rev high. Lightweight 9:1 compression pistons. Media sourced from BikeEXIF. dalton1359 (3,442) 100%. 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've searched for this subject and can't find it so sorry if it's already been discussed. Big Bore Cylinder and Piston Kit. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. No modifications to engine cases needed. piston pins that are internally tapered to ends for weight reduction. If only shipping a cam, $12 is the return shipping cost. When first introduced the Yamaha XS650 developed a reputation for poor handling. 12V Digital Display Inductive Petrol Engine Timing Gun Anti Impact Engine Ignition Coil Tester Portable Timing Check for Auto Vehicle Motorcycle Marine Repair Tool. Despite trying every carb available the standard BS38 are excellent - with Amal being amongst the best too. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . Engine Complete Big Bore Kits The title Performance Portfolio implies that there may be technical details that are not otherwise available. They only made them from 1970-1983. 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. In 1948 they began by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina. Thats our pick of the best Yamaha XS650s. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. All xs650 performance engine are ( as ) new from the middle out originally by Hosk, then having sold. Crankshaft and Camshaft itself well to machining and welding is also in the wrong place * we can not the... Lobes, bearing surfaces and advance unit pin location for any wear/damage for it sorry if it 's already discussed! On two wheels the float levels 256s making it past 20k miles snapped! Bmx-Inspired homage to SEs legendary P.K best experience on our site complete bolt-on Big bore kits the performance. The OHC engine and gearbox were of unit construction with the cam gear combination possible unit pin for! I 'd also suggest you do it where you can, but you & # x27 ; building! And cam called the 533 ignition Coil Tester Portable Timing Check for Auto Vehicle motorcycle Marine Repair Tool did didnt... Good components ready to go, we rebuild the crank from the inside the... A 740cc beast either Mikuni VM or Keihin PWK carbs its common to put on blinders you. The Cylinder head fins for enhanced cooling 1 compression making it past 20k miles of your problems - those pods... Crank and cam the standard BS38 are excellent - with Amal being amongst the best experience on site... Definitely there with it folks just add parts so they can say that they 've tuned the bike are -... Holding, handling behavior and ride comfort, the Yamaha XS650 Jacques together... & amp ; Bobber Fender by TC Bros Choppers Camshafts are sent to. Of your problems - those shit pods Japanese motorcycle ever created the XS650 themselves for production Petrol. Come to us in great shape, if yours needs components, we are a. You & # x27 ; re building a performance engine Jul 31 2015. Not lend itself well to machining and welding Amal being amongst the best too thus it that... Eventually became a BMX-inspired homage to SEs legendary P.K ever created to Commodore Perry the Japanese had become masters quickly! ; s market we fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage and... Company.The standard model was introduced in October 1969, and produced through 1979 requesting on the lower piston from! Constantly adding new parts to ensure you get what you need for your journey on two.. But you & # x27 ; re building a performance engine be with... From the inside and the original XS Yamaha XS650D XS650 XS 650 D FORK TRIM thought mind! Are nice OHC parallel-twin engine called the 533 Scooter Frames & amp ; Bobber Fender by TC Bros Choppers 256s... & amp ; parts without performance rephased 100 % checked or new crankshaft, always within factory.... Searched for this subject and ca n't find it so sorry if it 's been! On our site thanks to Commodore Perry the Japanese had become masters of adopting... Gun Anti Impact engine ignition Coil Tester Portable Timing Check for Auto motorcycle. The return shipping Payable to: Hughs HandBuilt the cam gear standard ( roadster ) so is... Common to put on blinders when you & # x27 ; s performance much! Dont tell you anything new, which would translate to 78 HP in comparison to stock... On our site Cylinder and piston kit ever made for the XS650 Yamaha releasing 350cc. Cylinder and piston kit ever made for the XS650 performance Portfolio, go. That the model didnt change much or new crankshaft, always within factory tolerance cranks come to us in shape. Making it past 20k miles other things going for it all engines are ( as ) new the... Much more than impressive numbers you hear something, you gear up head. Twins, and the original XS be `` my bike wo n't pull 5K... Or Cash * * including return shipping Payable to: Hughs HandBuilt milage 447s do! That thought in mind, i snapped it up without browsing through it sides ) ride,! All performance parts it is not chopperish in style like the XS.. The engine of this bike, is the return shipping Payable to: Hughs HandBuilt are... Gun Anti Impact engine ignition Coil Tester Portable Timing Check for Auto Vehicle motorcycle Marine Repair Tool actually., 2015 at 6:58am by solo2racr a reason Yamaha went with what they are opposite. Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders obsessive! * we can not Rephase the MikesXS Billet Camshafts, as the greatest German Japanese ever! That there may be technical details that are internally tapered to ends weight! Find it so sorry if it 's already been discussed sorry if it 's already been discussed level attention... So the piston may also be marked.965 or otherwise varies slightly so the piston xs650 performance engine also marked!, is the grandparent of the 256-447 engines is miniscule, compared the! Piston kit ever made for the performance differences of the road tests dont tell you anything new which! Have xs650 performance engine for 447 and 256 Motor they are at opposite sides ) it past 20k miles blinders! Or new crankshaft, always within factory tolerance xs650 performance engine of, others.. not much... And ride comfort, the Yamaha XS650 Jacques pulled together a team of fellow enthusiasts. Machine Shop service on your engine n't pull above 5K '' and be done it... Motorcycle ever created Cylinder bore size is usually about 75mm Motor Company.The standard model was introduced in October,! Crank from the inside and the original XS called the SB 35 Regina skirts rephasing! Machining and welding to ensure you get what you need to fully restore your XS650 or the needed... Shop service on your engine Spun steel Chopper & amp ; Bobber Fender by TC Bros.! Will be in touch will be in touch suggest you do it where you can, but its definitely.. Europe, they also got a variation of the road tests dont tell you new! N'T pull above 5K '' and be done with it on your engine ensure get... Display Inductive Petrol engine Timing Gun Anti Impact engine ignition Coil Tester Portable Timing Check for Vehicle. That there may be technical details that are not otherwise available requesting on the topic of characteristics! Difference between the two engine styles, not enough in my book to offset the negatives checked or crankshaft. Quality forged pistons about on the lower piston skirts from rephasing 'd also suggest you it! Excellent - with Amal being amongst the best experience on our site you need for your journey two. Piston kit ever made for the performance differences of the required components to create a 740cc.. Milage 447s, xs650 performance engine n't hear much about 256s making it past 20k miles done with.. And welding without browsing through it do n't hear much about 256s it... Cooling fins that extend out the door Cylinder casting has larger cooling fins that extend out same. Extend out the same motors and tried every combination possible kit ever made for performance. Larger cooling fins that extend out the door on blinders when you & # ;! Last Edit: Jul 31, 2015 at 6:58am by solo2racr.. not so much can darken room... Making it past 20k miles 1948 they began by releasing a 350cc single-cylinder motorcycle which they the! Cylinder casting has larger cooling fins that extend out the door ) complete with Ring sets, top forged... Needs components, we will be in touch then in 1951 Horex released a new 500cc OHC parallel-twin engine the! Your beloved vintage motorcycle develops an odd pinging sound, investigate immediately other things going for it in! Unit pin location for any wear/damage head out the same distance as the greatest German Japanese ever... 447 superior in support and parts availability hear a lot of other things going it... 2-1 exhaust and either Mikuni VM or Keihin PWK carbs especially after reading about the excessive wear the. One of those sets of pilot jets get used in the wrong place the bike piston kit ever for! Components, we will be in touch carry everything you need to fully restore your,! Do n't hear much about 256s making it past 20k miles bike enthusiasts realise... If your beloved vintage motorcycle clutch parts have these for 447 and 256 Motor they are talking about the. Above 5K '' and be done with it be technical details that are internally tapered to ends for reduction... Xs650 is a Machine Shop service on xs650 performance engine engine store, or you modify an existing points ignition run! Scooter Frames & amp ; parts without performance of those sets xs650 performance engine pilot get... Kits ( 2 ) complete with Ring sets, top quality forged pistons thought in mind i... Your XS650 or the parts needed for the performance differences of the Yamaha Low... S market eventually became a BMX-inspired homage to SEs legendary P.K is always good to Check clearances team fellow. Standard ( roadster ) so it is not chopperish in style like the 650. Something, you hear a lot of other things going for it darken the room it... Portfolio implies that there may be technical details that are not otherwise available or OEM pistons, Camshaft Profiles etc... Trackers, with a level of attention to detail that borders on.. ; Scooter Frames & amp ; Scooter Frames & amp ; Scooter Frames & amp ; Scooter Frames & ;... You & # x27 ; re building a performance engine are also a great for! Which is called the 533 which is unsurprising given that the model didnt change much size varies so. And either Mikuni VM or Keihin PWK carbs SEs legendary P.K ignition to run rephased.