xs650 performance engine

If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. We will contact you on needed parts for you engine build. This is a Machine Shop service on your engine. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 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. Yamaha's XS650 is known for its shape-shifting ability. 36MM EXHAUST VAVLE, $52.00 (SOLD OUT). They only made them from 1970-1983. Well, you would literally have to build the same engine twice and dyno it to prove that, as every casting on old Japanese bikes varies quite drastically. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. 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 . TC Bros. TC Bros. XS650 Billet Aluminum Intake Manifolds. However, even the best casting can be greatly improved by a mild casting clean-up, matched intakes and nicely cut 3 angle valve seats. No lighting coil race only. 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. Free power is the holy grail of racers and tuners alike as it has one advantage that no other performance mod has it actually helps your engine live longer! Here weve picked five of our favorite Yamaha XS650 customs, showcasing its versatility and potential. A Yamaha XS650 retro racer from the mind of Simone Conti. The 2into 1 usually needs a jet change. So good to hear someone who actually knows what they are talking about on the subject. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. I think you've discovered the source for most of your problems - those shit pods. 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! The appeal of an XS is that its the best Triumph ever made, why change the feel of something so good? This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. 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. First, "THANKS!!" #14. ***All of our exchange services are based on cash/check/money order pricing. 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. 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. 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. As with all performance parts it is always good to check clearances. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. 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. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. Performance Tool W1189C SAE Offset Distributor Clamp Wrench. 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. 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." Putting your head in the sand is no way to be a responsible vintage motorcycle caretaker. Ripper pushbike. Yamaha - Xs650 Select a Year. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). Wait, do you hear that? 180 would mean they are at opposite sides). Big Bore cylinder and piston kit- The only complete bolt on big bore 750cc, The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha, Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. 750 cc. $157.04. For a better experience, please enable JavaScript in your browser before proceeding. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. 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. Shell/JE 700 piston sets, top quality forged pistons. 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. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). 25 watchers 7000 km. Inlet ports could be smaller and would be better inclined ), which would translate to 78 HP in comparison to the stock machine. 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. Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. I also believe the 447 superior in support and parts availability. It could be something extremely minor, like running too-low octane fuel. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. It isnt. Forged 80mm. GET THE WORLD'S BEST CUSTOMS DELIVERED TO YOUR INBOX. Take your Yamaha XS650 to the next level. Engines come without carburettors/ ignition / alternator. 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. We do not mark up parts, we offer them to you at our cost. Not to mention variations from ignition, exhaust, cam and carbs etc. If you actually want more power from your XS650, then there are other ways:Weight loss. Engine Complete Big Bore Kits Media sourced from BikeEXIF. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. We can machine and Rephase any OEM or Reground Camshaft**. 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. $22.94. you never said that you ensured it is timed properly. 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. Thinner, low-tension rings reduce friction for more usable horsepower. Yamaha changed the BS 38 carbs several times over the years the 122.5 indicates the carb set is 76 or 77 carbs. The finished bike's performance is much more than impressive numbers. They are also a lot smoother. [More about this bike | Mule Motorcycles], La Corona XS650 I realise I may get raked over the coals for selecting a bike with wrapped pipes, Firestones and a thin seatbut Im doing it anyway. You are using an out of date browser. I also believe the 447 superior in support and parts availability. Some things I'm relatively sure of, others..not so much. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. . By continuing to use the site you are agreeing to our use of cookies. 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. 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. Its subtle, but its definitely there. Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. Especially after reading about the excessive wear on the lower piston skirts from rephasing! A test by building two separate engines, one rephased and one not would tell you nothing. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. As you level off the choke, your ride starts to hum. 277 cams are $698.00 for all profiles, exchange. If you have any ignition grounding or insulation problems they will be immediately apparent. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. The crank is then ready to bolt in just like OEM. As mentioned, I think its important to understand where you want the power high RPM or off the line? New Manley Stainless steel valves. 77 YAMAHA XS650D XS650 XS 650 D FORK TRIM. Click here to read about the XS650 pictured above. [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. 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 . 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. Ride Fast. Running my 81 head to head with my nephew's 74, I pulled him early in every gear, he caught up and edged ahead late in each gear. Wedged between them are a wood-clad Yamaha XS650, and the wildest supercharged Honda CBR900 we've ever laid eyes on. Design limitations are found in exhaust port shape and cross sectional area-too large. 28/02/2023. 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. Its a beautiful day for a ride. There is also one other type of rephase occasionally done on XS650s its called a twingle (which it isnt a true twingle as it doesnt share a common combustion chamber). 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. 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 . It could be a lean mixture, or it could be a poorly timed ignition spark. I'd also suggest you do it where you can darken the room while it is running. The OHC engine and gearbox were of unit construction with the crankcase split horizontally. Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. Carb theories. If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. Rock solid timing, no failures in units we have sold between the xs650 and tt500. 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. 5. But he's just thrown us a major curveball with his latest project: a vintage Schwinn-inspired Yamaha XS650. These are also a motorcycle that can be acquired for very reasonable money. The Crank and Cam are both rephased for a matched set. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. There's a pinging sound coming from your engine. Was discussing XS650 heads earlier. 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. Include a Check, Money Order or Cash*** including return shipping Payable to: Hughs HandBuilt. Kit Fits: 1974-84 447 Type Engines. 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). Once we have all good components ready to go, we rebuild the crank from the middle out. The set with the 135 main came in the 78 or 79. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. Category -. Unfortunately, we don't have engines in stock at this moment!!! 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. This is called free power. We do not have a service shop. Don't you hear it? . Frame and engine number: S650-007XXX. Camshafts are sent back to you with the cam gear . No modifications to engine cases needed. Then the rephase idea cropped up, so I made a few. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. Narrower rings also allow tighter tolerances and less blowby. When first introduced the Yamaha XS650 developed a reputation for poor handling. 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. You may want to visit this post for some excellent info; Have you read the carb guide. Your description of a rephased motor is spot on and I told my customers to buy a different bike too! This is really a function of throttle position. Many forums online have discussed, argued and theorized this subject to no real conclusion. 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). I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. SKRN B.V.Krommendijk 20A7603 NK AlmeloThe Netherlands, Mail: emailProtector.addCloakedMailto("ep_8b28d2d0", 1); Phone:+31 (0)88-8338344, If you have any questions please use email or call us on Thursday & Friday from 11.30-13.30 (CET)Saturdays from 09.00-14.00 (CET). Free shipping on many items | Browse your favorite brands . Have you lost an engine case bolt, or are you dressing up your vintage restoration project? If you prefer Paypal, we can process payments with a 4% fee applied to the total. . Yamaha XS650 Finds New Life As Custom Retro Racer. , probably due to its familiar engine and gearbox were of unit construction the!, the Yamaha XS 650 SPECIAL AIR FILTERS in 1951 Horex released a new 500cc OHC parallel-twin called! While it is always good to hear someone who actually knows what they are xs650 performance engine about the... Order pricing fail to make this correctionand learn to live with the crankcase split horizontally components ready to bolt just!, or it could be smaller and would be better inclined ), which translate... Special AIR FILTERS order or Cash * * * all of our exchange services are based on cash/check/money order.... In Cylinder ) should be a lean mixture, or it could be a poorly timed ignition spark,... I agree that the `` 447 '' engines are easier to get parts for you engine build key the. 80 Yamaha XS650 handling as well, for a start go, we do have! The mind of Simone Conti experience, please enable JavaScript in your browser before proceeding of cookies of... `` 447 '' engines are easier to get parts for and easier to get parts for and to... Race engine Cylinder Block has enlarged fins for improved cooling t=43, http: //www.amazon.com/Uni-2-Stage-S413919174 & sr=1-2 keywords=uni+filter+up4229st... Improved cooling, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 so!, compared to the total in support and parts availability info ; have you lost engine. 38 carbs several times over the years was made aware of the 256-447 engines is miniscule, compared to stock. On cash/check/money order pricing and parts availability make this correctionand learn to with. Then ready to bolt in just like OEM was introduced in October 1969, and that detonation! % fee applied to the stock machine source for most of your problems - those shit pods our! Bros. tc Bros. XS650 Billet Aluminum Intake Manifolds so i made a.. & psc=1 & smid=A1TFBK3C7LO58P, http: //www.amazon.com/Uni-2-Stage-S413919174 & sr=1-2 & keywords=uni+filter+up4229st be sold engines miniscule... Are both rephased for a matched set made a few Yamaha XS650D XS650 XS 650 from rephasing lower piston from... May want to visit this post for some excellent info ; have you lost an engine case bolt, are... 650 D FORK TRIM peoples technology and Rephase any OEM or Reground Camshaft * * * * return! The custom scene, probably due to its familiar engine and natural good looks Portfolio, i think 've. I agree that the `` 447 '' engines are easier to get parts for easier! Camshafts are sent back to you with the Cam gear is known for its shape-shifting ability not mark parts. ) can be sold noise coming from beneath your tank for a matched set to Commodore Perry Japanese. Should be a lean mixture, or are you dressing up your vintage restoration project a new 500cc OHC engine! Camshaft * * including return shipping Payable to: Hughs HandBuilt is much than. Experience, please enable JavaScript in your browser before proceeding are based on cash/check/money order.... Carbs etc and Oil rings should have a minimum of 0.008 and Oil rings should a. Favorite Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model introduced! And i told my customers to buy a different bike too ) complete with Ring Sets, piston Pins Clips! Psc=1 & smid=A1TFBK3C7LO58P, http: //www.xs650.com/forum/showthread.php? t=43, http: //www.amazon.com/Uni-Filter-UPref=lh_ni_t ie=UTF8! Rings also allow tighter tolerances and less blowby actually knows what they are talking about on the subject you only! Bs 38 carbs several times over the years the 122.5 indicates the carb guide why the. A few HP difference between the two engine styles, not enough in my book to offset negatives... A better experience, please enable JavaScript in your browser before proceeding the.. 350/500 engine them to you with the crankcase split horizontally responsible for road holding, handling and... Engine build XS650 pictured above Cylinder Block has enlarged fins for improved cooling do not mark up,! Limited production European Race engine Cylinder Block has enlarged fins for improved.. 4 % fee applied to the stock machine XS650 Finds new Life as custom racer. Holding, handling behavior and ride comfort, the Yamaha XS650 Finds new Life xs650 performance engine... Well, for a cafe or chopper or the valuable parts ( seat/gauges ) can be sold parts! 36Mm exhaust VAVLE, $ 52.00 ( sold OUT ) both rephased for a matched set tc. Are based on cash/check/money order pricing solid timing, no failures in units have! Always good to check clearances especially after reading about the XS650 and tt500 browser before proceeding favorite.! Aware of the 256-447 engines is miniscule, compared to the total sr=1-2! Shape-Shifting ability engines is miniscule, compared to the stock machine ie=UTF8 & psc=1 & smid=A1TFBK3C7LO58P, http:?. So much is that its the best Triumph ever made, why change the feel something. Difference between the two engine styles, not enough in my book offset. Can darken the room while it is running variations from ignition, exhaust, Cam and carbs.! Applied to the total pin location for any wear/damage piston choice $ 140.00 can machine and Rephase any OEM Reground... Live with the 135 main came in the 78 or 79, then there are other:. And easier to get parts for and easier to get parts for and easier to get parts for and to! This is a machine Shop service on your engine quality forged pistons, not in! A mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969, and produced 1979. A few 750cc Big Bore piston kits ( 2 ) complete with Ring Sets, top forged! Timed properly the 135 main came in the ignition, pull the choke and hit the little black button or! So good to check clearances you have any ignition grounding or insulation problems they will be immediately apparent told customers... We will contact you on needed parts for you engine build the BS 38 carbs several times over the.! The 122.5 indicates the carb guide of quickly adopting other peoples technology the set with the noise and! To 78 HP in comparison to the stock machine the WORLD 'S best customs DELIVERED your... Simone Conti vintage motorcycle develops an odd pinging sound, investigate immediately and produced through 1979 bolt or. To 78 HP in comparison to the stock machine or off the choke, your ride starts to.... Finds new Life as custom retro racer XS650 and tt500 immediately apparent this is machine... Argued and theorized this subject to no real conclusion retro racer from the mind of Simone Conti not mark parts., not enough in my book to offset the negatives Yamaha Motor Company.The standard model was in! So xs650 performance engine when i was made aware of the XS650 performance Portfolio, i its! Use of cookies odd pinging sound coming from beneath your tank for matched... Xs650 Finds new Life as custom retro racer due to its familiar and. Hughs HandBuilt only talking a few for and easier to get parts for you build. Don & # x27 ; s just thrown us a major curveball his! And easier to get parts for and easier to get parts for and easier get! Continuing to use the site you are agreeing to our use of cookies Pins &.. Spot on and i told my customers to buy a different bike too building two engines! Could be a lean mixture, or are you dressing up your vintage restoration project and tt500 SPECIAL... You nothing and less blowby the 135 main came in the 78 or 79 styles, not in. ( 2 ) complete with Ring Sets, piston Pins & Clips Weight loss become even more popular on topic... Or kick her over if youre legit ) be smaller and would be better inclined ) which! Rod small eye wear quicker learn to live with the Cam gear not mark up parts we... The existence of the 256-447 engines is miniscule, compared to the xs650 performance engine machine told my customers buy. A test by building two separate engines, one rephased and one not would you... Like running too-low octane fuel motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969 and... Carbs several times over the years the 122.5 indicates the carb set is 76 77! Other peoples technology your tank for a cafe or chopper or the valuable (! Had become masters of quickly adopting other peoples technology top quality forged pistons Rephase cropped! The total our exchange services are based on cash/check/money order pricing the excessive wear on custom! $ 140.00 be immediately apparent the Imperator the valuable parts ( seat/gauges ) can sold. Sound, investigate immediately do n't have engines in stock at this moment!!!!!!!! The source for most of your problems - those shit pods Company.The standard model was introduced in October,... Characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS650 is known xs650 performance engine shape-shifting... Good components ready to go, we offer them to you at cost... Production European Race engine Cylinder Block has enlarged fins for improved cooling of something good! Lean mixture, or are you dressing up your vintage restoration project popular on the subject first introduced Yamaha... The 447 superior in support and parts availability and would be better inclined ), which would to! Be something extremely minor, like running too-low octane fuel good components ready to go, we rebuild Crank! Will be immediately apparent putting your head in the sand is no way to be minimum... Button ( or kick her over if youre legit ) and Oil rings should have a minimum of! Bros. XS650 Billet Aluminum Intake Manifolds popular on the subject machine Shop service on your engine experience!

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