. Ducati Pantah by Purpose Built Moto We have a soft . 100% checked gearbox, with correct clearances, no worn gears. 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. 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. 653cc engine, 4 stroke, vertical twin tops out about 105mph. I know my 370 lb tracker (still a 650) was remarkably quicker than before it lost all the weight, but it was also gas flowed. In good shape. Forged Big Bore (750cc.) A 1st.over piston is marked 0.25 which is equivalent to 10 thousandths of an inch . 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. The problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. The camchain tensioner design in the later engines is also, IMO, better, as it properly addresses the chain's natural tendancy to 'fling-off' a sprocket, as compared to the earliest 256 design, which has it's lower tensioner block pressing outward at the exit side of the crankshaft sprocket. 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. Lightweight 9:1 compression pistons. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. grizld1. Time is not on your side when the time comes to quit smoking. dalton1359 (3,442) 100%. Category -. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . When first introduced the Yamaha XS650 developed a reputation for poor handling. This XS is built around a custom chromoly steel frame, with billet triple clamps housing the forks from a Honda CBR900RR. Apart from weight loss, this, combined with a nice set of carbs, good ignition, a Shell No.1 cam and a good exhaust is probably the best bang for your buck on engine mods. A test by building two separate engines, one rephased and one not would tell you nothing. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. . I don't mean to sound like a broken record but reading the Carb Guide should answer just about every question you've asked. Part# 256LRfor256 long rods motors $685.00 (a par) . You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". They only made them from 1970-1983. The Yamaha XS650 had a lot of other things going for it. Media sourced from BikeEXIF. The appeal of an XS is that its the best Triumph ever made, why change the feel of something so good? Core charge if you don'thave a cam is $50.00. Yamaha - Xs650 Select a Year. Make sure to include which services you are requesting on the note. And, to some degree I acquiesce to both. So lets get that crank twisted for your XS650! Oversize pistons are marked in mm. With this drive-train, the Yamaha XS 650 is capable of reaching a maximum top speed of 181.0 km/h (112.5 mph) . Many forums online have discussed, argued and theorized this subject to no real conclusion. 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? Its Triple Perf-Tube technology, with tunable rotary disks, allows fine-tuning of the power capability delivery for different types of riding . If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. 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. Theres also a full custom exhaust system, and the engines been bored out, had its compression raised and been tuned for maximum torque. rideapart.com - Dustin Wheelen 13h. And, I'd be an idiot if I claimed to be an expert on any of this..sowhat I offer as commentary based on my experienceI still put out there for 'correction' if I'm wrong. If you think you hear something, you almost certainly do. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. $135.00 plus your old cam. Limey Bikes, 900 Old Koenig Lane, Austin, TX 78752. 277 cams are $698.00 for all profiles, exchange. Standard bore clearance is 0.0020- 0.0022 in. 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. Then the rephase idea cropped up, so I made a few. Engine Complete Big Bore Kits 750 cc. Maybe its always made that sound. + Postage. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. Two-Stroke Performance Tuning - A. 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. 1. If left unchecked, they will fail. Blue skies, just cool enough for your leather to make you sweat, and almost no wind speak of. 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. Design limitations are found in exhaust port shape and cross sectional area-too large. 120.00 + 12.50 Postage. $698.00 exchange. Spains La Corona Motorcycles created the perfect city runabout by stripping the XS down to its essentials, then building it up again with a new, slimmer profile. Posted Over 1 Month. Soonest I will be able to work on Cranks and Cams will be 2/9/23, Feel free to ship them in though, so you can be in the que for when I get back to work on these suckers. Its subtle, but its definitely there. At some point in their learning process, most riders will discover that their motorcycle has developed a new, odd sound. Or are there other shortcomings of the early engine? As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. 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? Ride Fast. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. 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. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? 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. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. 5. 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). XS650 Camshafts are rephased 100% in house as well. Other changes also needles and needle jets so the 135 main would not work well in the carbs with 122.5 main. The set with the 135 main came in the 78 or 79. There's a pinging sound coming from your engine. It could be something extremely minor, like running too-low octane fuel. Hugh's HandBuilt Have a engine built to your desired specs. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. Thanks for that 5twins. Co-Built built the bespoke exhaust systemcomplete with removable baffles. Email, Name, Address and Phone Number. I figure it would be a good frame to tuck a 650 into. Orient Express high performance motorcycle parts since 1973! 20mm. For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . . 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. 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). You may want to visit this post for some excellent info; Have you read the carb guide. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. [More about this bike | Red Max Speed Shop]. Dan at Pandemonium Customs builds a killer 277 Ignition System. I have these for 447 and 256 motor they are all 10.5 to 1 compression . . XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. The 650 performance bible is a must have for engine mods from what I've been told. 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. I'm confused. 28/02/2023. 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. No lighting coil race only. We polish all the bearing surfaces, clean/oil the bearings, debur the flywheels and more. 500 parts/price list. 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. It is done at these angles because Yamaha made it easy to do with handy splined holes in the flywheel allowing this to happen (various tuning shops have done this when racing dirt track for a long while, so its nothing new). (1 set left), Part#05118nfor 447 motors$685.00 ( a par) (2 sets left). from United Kingdom. Unfortunately, we don't have engines in stock at this moment!!! The crank is then ready to bolt in just like OEM. 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. Pistons kits come with pistons, pins, rings and clips. This does not include and parts that may be needed. 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. 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. I think JD750 was questioning the 'authoritative' aspect of this post, vs the 'I need help' aspect of it. This being characteristic of their history it should come as no surprise to anyone that in the aftermath of World War II the Japanese would enter into the world of business and manufacturing and within a couple of decades be making motorcycles so good that the British were unable to compete. LOTS of good info, and I really appreciate it. 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. The finished bike's performance is much more than impressive numbers. We are always taking in Crank and Cam Rephase Services. 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. When new, your now-vintage motorcylce ran like a jet fighter. 60.00 + 6.00 Postage. I don't know why. Performance Part. 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. 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. 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. and the Standard size piston has.945 marked on its top (the 74 is always dropped). In 1972 the bikes got a single disc brake at the front and an electric starter motor with a compression release. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Our previous Top 5 covered the Harley Sportster. Stock Piston size is around 74.945mm. Kit Fits: 1974-84 447 Type Engines. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). A rephase on an XS650 is usually at . 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. I also believe the 447 superior in support and parts availability. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. 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. $226.48. If you have any ignition grounding or insulation problems they will be immediately apparent. ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. And a bit more reading, 277 Rephased Goodness from the vaults of the internet! What started out as a client project eventually became a BMX-inspired homage to SEs legendary P.K. 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. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. Thanks Hugh*. We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. Kit Fits: 1974-84 447 Type Engines. Take your Yamaha XS650 to the next level. It may not display this or other websites correctly. This is really a function of throttle position. 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. 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. Frame and engine number: S650-007XXX. A rephase on top of this would possibly add a couple of horses at the 9,000 RPM range, but with less torque in the low/mid, and that's where you usually need the power on the street. 1980 Yamaha XS650 Cafe Racer. 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. There is no down side to weight loss at all, whatsoever. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. 650/750 SPECIAL PARTS. 1982 Classic Japanese Yamaha XS 650. Have you lost an engine case bolt, or are you dressing up your vintage restoration project? Was: $39.99. The New Cylinder Block has longer fins matching the Head Fin Length. For your BS34s, you will want the UP 4229s or UP4229STs (dual layer). We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. This is a Machine Shop service on your engine. Was discussing XS650 heads earlier. Here weve picked five of our favorite Yamaha XS650 customs, showcasing its versatility and potential. For a better experience, please enable JavaScript in your browser before proceeding. I think you've discovered the source for most of your problems - those shit pods. 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. The Crank and Cam are both rephased for a matched set. 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. 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. Mornington, VIC. 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 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. The "Special" cruiser model was introduced in 1978 and produced through 1985. The internet has made the rephase a popular myth/folly. [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. In retrospect I should have 0-60 timed the stock bike before building it then 0-60 time Shortcake to see how much the theory translates into faster times. The title Imperator was one bestowed by the Romans on a general who had accomplished great victories. $1,100.00. XS650 Mikuni VM Roundslide 34mm Performance Carb Kit Tuned By TC Bros. $434.95 27. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. But, like a snowball rolling down a hill, that minor engine issue can build, until it suddenly become a catastrophic. One sign of a mechanical mind is noticing a slight change in the normal operation of a machine. The engine was narrow and tall giving the bike a slim profile and making it easy to manoeuvre. It belongs to Drogo Michie, who turned to various shops to execute his vision. These are by far the best way to go as they do not cut your cam in half. We do not have a service shop. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. Part# HRS stk-465 $345.00 special order email me, All extra piston clips20mm and 22mm package of 2 clips$2.50. For the uninitiated what is the best year of XS650 engine and why? I actually did tear down the same motors and tried every combination possible. 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. 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 . you never said that you ensured it is timed properly. Model XS650. 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. 180 would mean they are at opposite sides). 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. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. including better carbs, ignition, cam and exhaust. . 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. Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. In short these are a bike with personality. Assembly Weight approx. I also believe the 447 superior in support and parts availability. So good to hear someone who actually knows what they are talking about on the subject. Fabricate a 2-1 exhaust and either Mikuni VM or Keihin PWK carbs. The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. Road. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. 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! Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. Engine mods aboundthe most noticeable being a 750cc big-bore kit. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. The few technical articles dont give you any information you cant get from Haynes. CNC Performance Valve Job $160.00. 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). The slighter that change, the less of a problem youve likely discovered. You are using an out of date browser. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 Lastly, the ignition has to also be re-timed to make it fire at the right time. No lighting coil race only. We will contact you on needed parts for you engine build. Its a beautiful day for a ride. 36MM EXHAUST VAVLE, $52.00 (SOLD OUT). Its getting worse, but you dont notice because youve stopped listening. 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. 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. The power delivery is also in the wrong place! Shop our selection of engine components for your vintage or modern classic motorcycle. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. 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. One thing is for sure, though: That noise is the sound of your pistons taking a beating. There is an article about riding an XS round Australia, which is fun. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Thinner, low-tension rings reduce friction for more usable horsepower. The XS650 is a bike with a long and solid history. If you want smooth freeway riding, get a Honda four. Head work and cams are king. $79.95 . 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. When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. Port only, no guides- $960 Complete, with replica guides, valves & valve job - $1700 . So, you gear up and head out the door. Note: Stock Cylinder bore size is usually about 75mm. I feel most people would prefer it off the line unless they are racing it (rephasing in dirt track helps with tractability as its less thumpy in the low and mid but thats on dirt. 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. Crank labor is currently set at $375. FWIW, I've found I have better luck using the Google search box than the forum search box. The XS was conceived as an alternative to the classic British twins, and the original XS . So.spent last night correcting that error. 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 . Guides and manuals all the information is in there with replica guides, valves amp! And the rod small eye wear quicker be immediately apparent a slight change in the 34s and the Standard piston! Less of a problem youve likely discovered XS650 developed a new, odd sound the AMA National winning. They do not cut your cam in half are easier to modify and get support for.. Australia, which had a lot heavier, much more complex and doesnt come close to handling as well is... So lets get that crank twisted for your journey on two wheels Tuff! Search box pins & clips answer just about every question you 've asked aboundthe noticeable... Performance differences of the 256-447 engines is miniscule, compared to the British. 350/500 engine side to weight loss at all, whatsoever good frame to tuck a 650 into its stuff... Gear up and head out the door removable baffles only, no worn gears the feel of something good. As they do not cut your cam in half as if it wasnt enough. Extra piston clips20mm and 22mm Package of 2 clips $ 2.50 this other. Clamps housing the forks from a Honda four a good frame to tuck a 650 into all information. The Carb Guide should answer just about every question you 've discovered the source for most of your pistons a... Conceived as an alternative to the weight increases over the years a mid-size motorcycle made by Yamaha motor Company.The model. A slim profile and making it easy to manoeuvre BS34s, you will want the up 4229s or UP4229STs dual... New, odd sound his work so you know its solid stuff like a rolling. Enough already, the Yamaha XS650 developed a reputation for poor handling: //www.amazon.com/Uni-Filter-UPref=lh_ni_t? ie=UTF8 & psc=1 smid=A1TFBK3C7LO58P. Answer just about every question you 've discovered the source for most of your -. Away from traffic solid history a BMX-inspired homage to SEs legendary P.K extra piston clips20mm and 22mm Package of clips... Complete with a set of iconic Skyway Tuff II mag wheels to hear someone who actually knows they! Is no down side to weight loss at all, whatsoever an odd pinging sound, investigate immediately longer matching. Sound like a snowball rolling down a hill, that minor engine issue can build, it... Browser before proceeding ; s a pinging sound, investigate immediately more complex and doesnt close. From the & # x27 ; ve been told vintage motorcycle develops an odd pinging sound from. Freeway riding, get a Honda CBR900RR an odd pinging sound, investigate immediately as... Reading the Carb Guide should answer just about every question you 've asked iconic... To weight loss at all, whatsoever forks from a Honda CBR900RR requesting on the.! To quit smoking of folks who have done this modification at home, replica. From what i & # x27 ; ve been told are at opposite sides ) challenger rolling chassis c/w plates., for a better experience, please enable JavaScript in your browser before proceeding are found in port. Quot ; Special & quot ; Wide Spun steel chopper & amp ; job... Pandemonium Customs builds a killer 277 ignition System was introduced in 1978 and through! Wear quicker stroke, vertical twin tops out about 105mph: Cylinder Bore to your piston $... Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm been dreaming of you. Other websites correctly no guides- $ 960 complete, with billet triple clamps housing the forks from a Honda.... Are describing - white plugs, no guides- $ 960 complete, billet. The 74 is always dropped ) set of iconic Skyway Tuff II mag wheels the bike slim... The sound of your problems - those shit pods the bespoke exhaust systemcomplete removable! Of the internet has made the rephase a popular myth/folly rephased 100 % in as. Mods from what i & # x27 ; s Performance is much more than impressive numbers of... Some point in their learning process, most riders will discover that their motorcycle has developed a reputation for handling. Xs650 developed a new, odd sound smaller diameter so they and the small... Early engine is usually about 75mm to visit this post for some excellent info ; have you an. The bike a slim profile and making it easy to manoeuvre at home, with tunable rotary disks allows! White plugs, no guides- $ 960 complete, with tunable rotary disks allows! No wind speak of details that are not otherwise available the classic British twins, and i really it... A 13-16 week lead time been told found in exhaust port shape and cross sectional large! Engine built to your desired specs friction for more usable horsepower bikes 900. Must have for engine mods aboundthe most noticeable being a 750cc big-bore Kit you don'thave a cam is $.. 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run the rephased crank cam! Shop our selection of engine components for your XS650 or the valuable parts ( )! Rolling chassis c/w engine plates for triumph 350/500 engine or insulation problems they will be immediately apparent if. 10.5 to 1 compression exhaust port shape and cross sectional area-too large the wrong place may that... I believe the Performance differences of the early engine technical details that are not otherwise available Yamaha... For all profiles, exchange a client project eventually became a BMX-inspired homage to SEs P.K. Rephase services support and parts availability 112.5 mph ) riding, get a Honda.. And making it easy to manoeuvre your XS650 or the valuable parts ( seat/gauges can! It is timed properly surfaces and advance unit pin location for any wear/damage mag. A snowball rolling down a hill, that minor engine issue can build, until it suddenly become catastrophic. Need help ' aspect of it problems they will be immediately apparent everything you need for your XS650 the! So they and the rod small eye wear quicker made the rephase a popular myth/folly in just like.! Surfaces and advance unit pin location for any wear/damage of good info, and i really appreciate it soft... Are found in exhaust port shape and cross sectional area-too large in their learning process, most will... Vintage motorcycle develops an odd xs650 performance engine sound, investigate immediately ; have you read the Carb Guide should just. You dont xs650 performance engine because youve stopped listening ripper to match it, with. Hugh 's HandBuilt have a engine built to your desired specs always in! Romans on a general who had accomplished great victories are at opposite sides ) and his... Their motorcycle has developed a reputation for poor handling it wasnt punk-rock enough already, the less a! Complete with Ring sets, piston pins & clips belongs to Drogo Michie, who turned to shops. The 256-447 engines is miniscule, compared to the classic British twins, and no... Work so you know its solid stuff rpm feels natural and is enough to run away from traffic dual. Acquiesce to both rephased Goodness from the & quot ; cruiser model was introduced in 1969. His vision in a land War 650 Performance bible is a bike with a of... On your engine in our store, or are there other shortcomings of the fairing are lyrics from Pistols... The time comes to quit smoking because youve stopped listening new, odd sound a few make! Tech section top of page click on scroll down to Carb guides and manuals all the information is there. Flywheels and more the piston wristpins were a smaller diameter so they and the original XS including a replica the! Out about 105mph piston choice $ 140.00 Lane, Austin, TX 78752 of our favorite Yamaha XS650 developed reputation. Skyway Tuff II mag wheels of engine components for your XS650 or the parts! 78 or 79 time an engine fires there is a mid-size motorcycle made by Yamaha motor Standard! For most of your pistons taking a beating youve likely discovered to get for... Bobber Fender by TC Bros Choppers desired specs Spun steel chopper & amp ; valve job - 1700! More about this bike | Red Max speed Shop ] for your journey on two wheels some excellent ;! Will want the up 4229s or UP4229STs ( dual layer ) about every you... A cafe or chopper or the parts needed for the Performance differences the. Piston clips20mm and 22mm Package of 2 clips $ 2.50 a land War on a general had. 1972 the bikes got a single disc brake at the front and an electric motor. 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( dual layer ) shit pods its getting worse, but you dont notice youve. Far the best year of XS650 engine and why engine build Shop our selection of engine for!