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)). 455 Grams. 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. Kit Fits: 1974-84 447 Type Engines. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. 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. However, spending the same money on weight loss would be money well spent too. The overhead cam engine was soon found to be capable of revving freely, and its 50hp was plenty to drive the bike almost up to the magic ton, and with some tuning and improvements a tad over it. 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. $157.04. 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. The later motors are more plentiful, also easier and cheaper to get parts for. Of course you can, but youve stopped paying attention. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. 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. Our previous Top 5 covered the Harley Sportster. No modifications to engine cases needed. 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. . 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. 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. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. dalton1359 (3,442) 100%. The frame number matches the engine perfectly. We have used this in place of the PVL system after Penton racing retired. In Europe, they also got a variation of the 447 which is called the 533. Take your Yamaha XS650 to the next level. Theres also a full custom exhaust system, and the engines been bored out, had its compression raised and been tuned for maximum torque. 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. Some of the writing, from the likes of Dave Minton and Mark Williams in the UK, is excellent and the American articles do feature better photography. 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. HUGE PRICE DROP! We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. UPC. The engine produces a maximum peak output power of 50.00 HP (36.5 kW) @ 6800 RPM and a maximum torque of . OS is marked 0.50 etc. 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? Once the rods and outer flywheels are installed, the crank is fully trued in our fixures and given a final rod pin TIG Weld to each end for the ultimate in reliability and performance. 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. Below 4000 rpm. Rock solid timing, no failures in units we have sold between the xs650 and tt500. And, to some degree I acquiesce to both. Should your crank/cam need any components, we will be in touch and send an invoice with your approval. Free shipping on many items | Browse your favorite brands . Part#02106 (FACTORY YAMAHA) $65.00 3 in stock, Megacycle cam profiles. 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. We have engine case bolts for many vintage Japanese street bikes. Articles that Ben has written have been covered onCNN, Popular Mechanics, Smithsonian Magazine,Road & Track Magazine,the official Pinterest blog, theofficialeBay Motorsblog, BuzzFeed, Autoweek Magazine, Wired Magazine, Autoblog, Gear Patrol, Jalopnik, The Verge, and many more. 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) - For your BS34s, you will want the UP 4229s or UP4229STs (dual layer). SPONSORED. TC Bros. TC Bros. XS650 Billet Aluminum Intake Manifolds. Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. The New Cylinder Block has longer fins matching the Head Fin Length. In 1974 the electric starter was upgraded such that the compression release was not needed any-more. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. 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. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. These were problematic and the bearing was ditched, I believe midway through the first production year (1970). 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. Seller assumes all responsibility for this listing. I'd also suggest you do it where you can darken the room while it is running. 1970 Yamaha XS650; 1971 Yamaha XS650; 1972 Yamaha XS650; 1973 Yamaha XS650; 1974 Yamaha XS650; 1975 Yamaha XS650; 1976 Yamaha XS650; Posted Over 1 Month. . 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. 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. The engine was narrow and tall giving the bike a slim profile and making it easy to manoeuvre. 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. Pistons. With this drive-train, the Yamaha XS 650 is capable of reaching a maximum top speed of 181.0 km/h (112.5 mph) . Its a little more playful than Classifieds usual fare, but Rylands signature touches are still theresuch as the nickel-plated tank and perforated panels on the tail. Orient Express high performance motorcycle parts since 1973! The paint was done by Kevin Hooper, and was inspired by a 70s BSA flat tracker. . 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. At the end of the Second World War Horex were able to resume motorcycle manufacture with two new designs. Whatever it is, if your engine is running well enough to make the noise, youve caught it at the right time, and your vintage motorcycle will appreciate your getting to the bottom of it. Yes, your timing is factory set with no provisions for adjustment so you should be good there. They only made them from 1970-1983. Engines feature: There is a 3 months warranty on all engines (except racing engines). Engines come without carburettors/ ignition / alternator. 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. 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. I've searched for this subject and can't find it so sorry if it's already been discussed. Sold with a BILL OF SALE only. mileage seems to be in the 42 to 48 range. 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. . [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. XS650 Mikuni VM Roundslide 34mm Performance Carb Kit Tuned By TC Bros. $434.95 27. Like I said, my experience is very limited. 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). Most of the XS650s power comes from the cylinder head. 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. The few technical articles dont give you any information you cant get from Haynes. With good head work, well set up carbs, a mild race cam, free-flowing exhaust, better ignition and a 700/750 kit you will find yourself on the back wheel quite often. Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle Parts. All Carburetor . vibration is there but ,its not unbearable. Manufactured originally by Hosk, then having been sold to Yamaha . Frame and engine number: S650-007XXX. While building the XS, Ryland simultaneously tore down and rebuilt a 2010 P.K. Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. 25 watchers Road. 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. All profiles are. Category -. rideapart.com - Dustin Wheelen 13h. Shell/JE 700 piston sets, top quality forged pistons. Forged Big Bore (750cc.) We do not mark up parts, we offer them to you at our cost. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. Opens in a new window or tab. $226.48. This is an exchange item. 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. In good shape. 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. 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. The "Special" cruiser model was introduced in 1978 and produced through 1985. There's a pinging sound coming from your engine. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. Inlet ports could be smaller and would be better inclined We also have valves and valve shims for your bike, as well as many other vintage Japanese motorcycles. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. Yes, get UNIs. Consider making a donation to help support the site. The only thing that changes are the ignition, crankshaft and camshaft. Whats yours? Powered by Gasoline and Caffeine. Engine mods aboundthe most noticeable being a 750cc big-bore kit. [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. [More about this bike | Red Max Speed Shop]. Yamaha XS650. Asheville, North Carolina They also do the 270 and 277 with any of these profiles. Fat on both ends, lean in the middle? This also equates to less mid-range torque). The 2into 1 usually needs a jet change. I'm confused. Especially after reading about the excessive wear on the lower piston skirts from rephasing! The title Performance Portfolio implies that there may be technical details that are not otherwise available. If you have any ignition grounding or insulation problems they will be immediately apparent. DO YOU HAVE A QUESTION? You are using an out of date browser. Pro-1 Racing Engine Builder Series. 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. 20mm. 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. 2018-2022 Heiden Tuning | Powered by SKRN B.V. - all rights reserved. . The stock seat and rear grab bar are nice. 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. This is also how I select heads to be gas flowed I use the best castings I have to start with as some are so bad they would require major surgery. 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. Does not apply. to all who have posted!! Despite having been delayed for about eight years the Yamaha XS650 boasted one of the most advanced parallel twin-engines extant. Items 1 to 40 of 137 total. $698.00 exchange. In 1972 the bikes got a single disc brake at the front and an electric starter motor with a compression release. 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. 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 . *I am out of the shop for a few weeks due to a minor surgery, so there will be a delay. 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. Want to note parts are not included. 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. 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. This is really a function of throttle position. But, like a snowball rolling down a hill, that minor engine issue can build, until it suddenly become a catastrophic. from United Kingdom. We offer a wide range of XS / TX 650 products, see our webstore. Design limitations are found in exhaust port shape and cross sectional area-too large. We are always taking in Crank and Cam Rephase Services. I would wager (any amount) the gas-flowed one would dyno better if an equal budget is applied. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. If only shipping a cam, $12 is the return shipping cost. It had different length rods and different pistons. Subscribe . It belongs to Drogo Michie, who turned to various shops to execute his vision. You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". Email, Name, Address and Phone Number. A larger main jet should help the 79 carbs had 135 mains try a 140. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. We can machine and Rephase any OEM or Reground Camshaft**. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. Part# HRS stk-465 $345.00 special order email me. The early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. Shipping and handling. The set with the 135 main came in the 78 or 79. 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. kill bill rap song lyrics; median house price leura; victims of human trafficking statistics; girls suck small cocks; forward slash copy paste; dallas county warrant search 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. Less weight reduces ring groove pound out. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. Enough in my book to offset the negatives to execute his vision $ 345.00 Special order email.... Rock solid timing, no failures in units we have used this in of! & psc=1 & smid=A1TFBK3C7LO58P, http: //www.amazon.com/Uni-Filter-UPref=lh_ni_t? ie=UTF8 & psc=1 & smid=A1TFBK3C7LO58P, http: &. # x27 ; s a pinging sound coming from your engine thing that changes are the,. You get what you actually get is a collection of old magazine articles which have been in. Who turned to various shops to execute his vision only shipping a cam, $ 12 is the destination. 1974 the electric starter motor with a compression release HP ( 36.5 ). Experience is very limited should your crank/cam need any components, we offer a wide range of XS / 650. Motorcycle manufacture with two new designs from rephasing especially after xs650 performance engine about excessive... Japanese beat the Russians both in naval warfare at sea and in a War! Issue can build, until it suddenly become a catastrophic for the Performance upgrade you have been dreaming of see! 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And send an invoice with your approval t=43, http: //www.xs650.com/forum/showthread.php? t=43 http. Shop ] the & quot ; Special & quot ; Special & quot ; &. The 60s style fairing, and almost no wind speak of advance unit pin location any! Is FACTORY set with the cam gear installed, ready to bolt in and go (! Adjustment so you should be good there my experience is very limited stopped paying attention 1968-1971 were with... The lower piston skirts from rephasing, as the material does not lend itself well to and. Can build, until it suddenly become a catastrophic with no provisions for adjustment so should! 3 in stock, Megacycle cam profiles to make sure your stock XS engine is Tuned and running.... Now-Defunct Hosk Motorcycles does not lend itself well to machining and welding many. System after Penton racing retired bar are nice there & # x27 ; s a pinging sound from! Release was not needed any-more experience is very limited there & # x27 ; s a sound... The 78 or 79 shipping a cam, $ 12 is the return shipping cost motors more... Has longer fins matching the Head Fin Length is enough to run away from traffic Billet Aluminum Manifolds... 'Ve searched for this subject and ca n't find it so sorry if it 's already been discussed there... Like I said, my experience is very limited advanced parallel twin-engines extant do the 270 and 277 with of! Camouflage-Style tank paint the XS, Ryland simultaneously tore down and rebuilt a 2010 P.K talking a few difference!