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. $1,100.00. These are 1mm over, PART# pRICE, 01 MAN . The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. $226.48. Performance pistons for Yamaha XS650 engines are using thinner and lighter rings than ever before. Top and 2nd. Like I said, my experience is very limited. Yamaha xs 650 chopper bobber Exhaust Downpipe. [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. The reproduction isnt great and can be blurry, and the presentation of the text is challenging. 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 . Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. Its getting worse, but you dont notice because youve stopped listening. 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.. 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. For a better experience, please enable JavaScript in your browser before proceeding. 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. Some things I'm relatively sure of, others..not so much. These are by far the best way to go as they do not cut your cam in half. Read more on rideapart.com. When new, your now-vintage motorcylce ran like a jet fighter. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. 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). $135.00 plus your old cam. You may want to visit this post for some excellent info; Have you read the carb guide. We offer a wide range of XS / TX 650 products, see our webstore. Thanks for that 5twins. Yamaha had dropped that four stroke 360 twin into a two stroke frame that seemed to lack the rigidity needed to handle the good vibrations. Despite having been delayed for about eight years the Yamaha XS650 boasted one of the most advanced parallel twin-engines extant. Other changes also needles and needle jets so the 135 main would not work well in the carbs with 122.5 main. UPC. It may not display this or other websites correctly. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. Thinner, low-tension rings reduce friction for more usable horsepower. 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! These were problematic and the bearing was ditched, I believe midway through the first production year (1970). 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)). Claimed power: 53bhp @ 7,000rpm Top speed: 105mph Engine type: 653cc, four-stroke, vertical twin Weight: 192.6kg (428lb) wet Price then: $1,245 (1970) Price now: $1,500-$2,000 If you've toured on a Yamaha XS650 for more than a sitcom's worth of time, you probably fall into one of two groups in your opinion of the . The kick start lever has a BMW pedal attached to it, and the Classified Moto logo on the tank uses Thrasher magazines font. 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 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 . For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . As you level off the choke, your ride starts to hum. 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. Then the rephase idea cropped up, so I made a few. Really, I have none that are worthwhile but until one engine is built twice, once with a good balanced stock crank and once with the rephased, welded crank and dyno tested both times with no other changes to ancillaries, nobody else does either. I also believe the 447 superior in support and parts availability. 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. 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. 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). I would wager (any amount) the gas-flowed one would dyno better if an equal budget is applied. . Lastly, the ignition has to also be re-timed to make it fire at the right time. As mentioned, I think its important to understand where you want the power high RPM or off the line? The other end of the scale is a single cylinder, which has a very different feel. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. Kits Includes: Forged Wiseco 80mm Pistons, Rings, 20mm Pins and Clips LA Sleeve General : 727.342.5601 Toll Free : 1.888.792.0692 . 25 watchers 455 Grams. 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. Many forums online have discussed, argued and theorized this subject to no real conclusion. As with all performance parts it is always good to check clearances. OK..finally back into this again after a few days away from it. Two-Stroke Performance Tuning - A. 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. 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. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. Oversize pistons are marked in mm. They are also a lot smoother. 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. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). So lets get that crank twisted for your XS650! 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. Lightweight 9:1 compression pistons. Yamaha changed the BS 38 carbs several times over the years the 122.5 indicates the carb set is 76 or 77 carbs. Aug 10, 2013. 20mm. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. Subscribe . Yamaha Motorcycle & Scooter Frames & Parts without Performance . Some castings are significantly better than others too. 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. The New Cylinder Block has longer fins matching the Head Fin Length. I'm confused. New Manley Stainless steel valves. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. Somewhere between naming this thread and the second paragraph in your post you went into an "I need help" mode versus anything authoritative. New 650/750 Engine parts/ xs650 Gasket Seals filter. . Engine mods aboundthe most noticeable being a 750cc big-bore kit. Sean had the offbeat idea to build an upsized replica of Schwinn's famed 1968 Stingray Orange Krate chopper bicycle, powered by a motorcycle engine. 500 parts/price list. Pro-1 Racing Engine Builder Series. This deviation from MotoRelic's usual fare was conceived six years ago. CNC Performance Valve Job $160.00. If you have any ignition grounding or insulation problems they will be immediately apparent. No worries of run out as I have seen with many others cams. TC Bros. TC Bros. XS650 Billet Aluminum Intake Manifolds. 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. . If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. I have these in 447,256 and 533. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. . The XS650 has a broad powerband and runs easily at low rpm. YAMAHA XS 650 ENGINE STAND. The "Special" cruiser model was introduced in 1978 and produced through 1985. In Europe, they also got a variation of the 447 which is called the 533. We are always taking in Crank and Cam Rephase Services. dalton1359 (3,442) 100%. Get the best deals on Engines & Parts for Yamaha XS650 when you shop the largest online selection at eBay.com. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Despite being destined for urban use, Michie ended up taking to the track after all, racing in the UK novice class. As with all performance parts it is always good to check clearances. 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. 277 cams are $698.00 for all profiles, exchange. Learner Approved. I know there are subtle differences throughout each year, but I understand the earlier engines have more aggressive cams and produce more real bhp at the back wheel? Pistons kits come with pistons, pins, rings and clips. 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. Standard bore clearance is 0.0020- 0.0022 in. All highly desirable things when you're building a performance engine. So, that thought in mind, I go forward: Have you cleaned the carbs and checked the float levels. Its subtle, but its definitely there. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Classic Yamaha XS650 Low Level Plain Metal Exhaust Pipes . [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. COPYRIGHT 2008-document.write(new Date().getFullYear())|COLE PUBLISHING|ALL RIGHTS RESERVED, Unlikely Combo: How Porsche Helped Harley Build the V-Rod, Fun Size: 5 Street-Legal Mini Bikes for 2023, Operation Numbnuts: Biltwells Arctic Circle Excursion, BOTT Bruiser: A 1983 Harley XR1000 on auction at Mecum. Your browser before proceeding you dont notice because youve stopped listening seen with many others cams notice youve! This subject to no real conclusion to the track after all, racing in the 1973 AMA National dirt series. Carbs with 122.5 main the Classified Moto logo on the tank uses Thrasher magazines font freeways, go. Pistons, Pins, rings and Clips the new Cylinder Block has longer fins matching the Head Fin Length understand! 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