Come join the discussion about performance, track racing, modifications. It is controlled by the ignition module via a servo motor and two cables. If you do not want the light on the dash, you will have to run the eliminator. The powervalve exhaust ultimate powervalve is set into the primary length of the exhaust in order to help boost power throughout the rev range using long duration camshafts. It consists of a gate valve in the exup housing, the cast exhaust section immediately behind the headers and below the engine. So eddie disconnected the cables and wired her open at my request so i could ride it. What is the spec adjustment on the exup valve ty4stroke.
A forum community dedicated to all motorcycle owners and enthusiasts. The yamaha engineers have spent extensive research and money on the exup valve and exhaust system. Bazzaz exup servo eliminator yamaha r6 r1 fz1 vmax. Exup valve yamaha r1 20002001 201056421 motorparts. This manual was produced by the yamaha motor company, ltd. The reason i am asking is, there is no mention about greasing exup valve in shop manual or owners manual. All they say is how to keep cables adjusted which is simple and easy. Exup valve maintenance the exhaust ultimate power valve exup alters the back pressure in the exhaust system at various revs. Highlift camshaft, valve spring highlift specification when using these camshafts, the valve springs should also be those in the kit. Discussion in apex general talk started by yooper1, feb 10, 2014. This model is the result of yamahas vast experience in the production of fine sporting, touring, and pacesetting racing machines. If you have swapped your exhaust then chances are you have already eliminated the exup servo.
The haynes manual for the early model r1 s which have an identical exup system recommends checking cable adjustment every service 4k or. Exup valve working fine, removed it for routine maintenance put it all back together again with a little copperease and wallop the bloody thing wont move jammed solid so rinse and repeat same story the valve seems to work fine right up until i tighten the bolts itll turn then stick as if its bent or off centre somehow. Graves motorsports exup servo eliminator yamaha r1 r1m. Exup exhaust ultimate power valve a device fitted to selected yamaha motorcycles fzr,yzf,xv1900,r series that constantly adjusts the internal diameter of the exhaust system to suit engine revs. Buy 20152018 yamaha r1 r1m r1s fz 10 mt 10 decat exhaust pipe. Eau15281 eau15301 luggage strap holders exup system sidestand this model is equipped with yamahas the sidestand is located on the left side exup exhaust ultimate power valve of the frame. It controls thhe exup valve in the 06 and up exhaust system.
Proper functioning of the valve is important to engine performance but, inexplicably, maintenance of the valve does not feature in yamahas routine maintenance schedule. Your experience with valve trains should agree with that. The 2020 yamaha r1 is forged from the technology and development gained from. This simple plugandplay application allows removal of the exup valve and motor without setting the dreaded check engine light when using a fullracing exhaust. Exup and later, suzuki set valves are controlled with exhaust valve push and pull cables, which until now were only available from the original equipment. Opinionscomments expressed on this site are not that of yamaha or any other yamaha subsidiary or affiliated company. The reason yamaha is rejecting your request is legitimate. Not only that, we found it is highly reliable, responds very well to modifications and tuning and can be used in the most. It appears that software on your computer is blocking javascript. Yamaha was the first to develop such a system, called the exhaust ultimate power valve exup.
I know this is because it thinks theres a problem with the exup, how can i make the bike ignore it. As designers began to appreciate the benefits of multivalve layout, 4valvespercylinder and even 3valves became. Congratulations on your purchase of the yamaha yzfr1xc. I replaced the exup on both of my r1s 5jj carbs and 5pw injection with race hindle headers, the 5jj gave more power through out the rev range 73 torque and 2 bhp with exup to 79 torque and 144 bhp with hindle headers and about 1 hour dyno time, i havnt dynoed the 5pw yet, i think if you want to remove the exup i would fit either race headers or wire it open, i know its a fazer. Show full signature chris 2004 bmw r1100s previous rides. Disconnecting the exup system yamaha workshop yamaha. Later versions from honda went by the names honda titanium exhaust valve htev and honda variable intakeexhaust hvix, appearing on the cbr600rr and honda cbr929rr. The exhaust valve exup cables control the valve which varies exhaust back pressure. The haynes manual for the early model r1s which have an.
Proper functioning of the valve is important to engine performance but, inexplicably, maintenance of the valve does not feature in yamaha s routine maintenance schedule. Yamaha have had a difficult time trying to get yamaha to check, and or repair my engine. Exup valve maintenance fazer owners club tapatalk. Hi all, my r1 has a big stuttery hole in the power delivery, but is fine once you get high up in the revs. The dohc genesis engine has five valves per cylinder and downdraft carburetors. By removing the moving vane that opens and closes at specific revs,the engine no long has this restriction in the collector to reflect back to the engine to help with. Yamaha would not have added any of it if there was no benefit. Bouncy idle, shitty gas mileage, no power under 7k, hard to start and so forth. Discussion in apex general talk started by blue rider, sep 23. The exup adopted on the yzfr1 has evolved to the point where input on five different parameters are used to regulate the controller.
What does an exup servo and subsequently exup eliminator. It is equipped with downdraught carburettors, throttle position sensor, gear position sensor, and a torqueboosting exup system for low to midrange performance with 145 bhp at 10,000 rpm. Yamaha adopted the 5valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high rpm. When you purchased your bike, they probably offered you the optional service plan. Slinky glide develop exup and set cables the wemoto weblog. When used in races, riders must mount the yzfr1 racing kit at their own discretion after checking the rules of competition issued by the sponsor. R1 exup valve adjustement pnw riders the motorcycle.
The first time yamaha ditch their fivevalve system in favour of a more popular fourvalve arrangement in the r1. Used and new motorcycle exup valve parts for yamaha r1 search results for motorblok incl elektronica, electronics, exup valve page 1. Graves motorsports exup servo eliminator yamaha r1 r1m r6 fz1 vmax wr250. Adjusting your 07 xjr0 exup valve cables posted in enginecarbsf.
Adjusting your 07 xjr0 exup valve cables enginecarbs. Disconnecting yamaha exup valve to fit race exhaust. The exup servo is responsible for closing a valve in your exhaust to create a known amount of backpressure in the exhaust system to allow the engine to work in the way it was designed. This service manual contains information regarding periodic maintenance to the emission control. The first fourstroke power valve device appeared on the yamaha fzr exup exhaust ultimate power valve, constantly adjusting the internal diameter of the exhaust system to match the engine speed.
Exup valve maintenance the exhaust ultimate power valve exup alters the back. The system appeared more than two decades ago on a 1987 yamaha fzr400r. Anybody got rid of the exup valve and lived to tell the tale. At the top, the r1s intake ports have been shortened and the intake volume reduced by 12 percent. Since ive disconnected the exup valve the tacho needle goes nuts. Yamaha yzf r1 2020 yamaha yzf r1 2019 yamaha yzf r1 2018 yamaha yzf r1 2017 yamaha yzf r1 2016 yamaha yzf r1 2015 yamaha yzf r1 2008 yamaha yzf r1 2007 yamaha yzf r1. This engine is very powerful in stock form, being one of the fastest bikes of its time.
It represents the high degree of craftsmanship and reliability that have made yamaha a leader in these fields. The pulley wheel has 2 lobes these should be either side of a holerecess the hole is for calibration, presumably in the factory with a setting pin, rev it up over 6000 rpm and the pulley should be rotated by the cables attached at the. The exup valve, is a variable restictor in the exhaust system looks a bit like the thames barrier, take your silencer if and look down tha pipe with a torch you should be able to see it. A new 10hole injector replaces the 12hole one used on the 2019 r1 with the spray now angled much more steeply toward the intake valve for better atomization. Normal used part, can be installed without problems.
Yamaha use the exup valve so they can have a highly tuned top end yet with the exup valve they can change the exhaust characteristics so as to not lose any bottom or mid range. This system boosts engine lower it with your foot while holding the power by means of a valve that regu vehicle upright. As a matter of fact they refer to 19982000 r1 but an exup valve is an exup valve, right. Note that haynes and yamaha manuals both state that copper grease is fine for this application. Therefore, anyone who uses this book to perform maintenance and repairs on. The motorcycle is powered by yamahas 1002 cc 20valve forwardslanting liquidcooled fourcylinder engine.
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