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troyboy

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    1998 yzf 750 sp

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  1. hi, im in a bloody big dilemma! do i sell me cadurys boost yzf750 sp? im just woderind what it mite be worth. heres the stats. 1998 cadburys boost race replica yzf 750 sp. all original painwork done by dream machine when bike was brand new, this bike was won in a compertition by someone in chard they sold it and i have the beast now. ( 3 owners) 17000 miles, full stainless thunderace exhaust system. loads of other little bits and bobs, full service history (done by meee!) racing heavy duty clutch and springs, new waterpump, new wheel bearings,new tyres,clear double bubble screen, carbon fibre panel with remote cooling fans cut in switches ( i hate getting engines hot in traffic) carbon fibre rear wheel hugger and built in chain gaurd ( ALL ORIGINAL PARTS KEPT!)recent carb rebuild and rejet by ex big cc racing fitter.dyno tuned to 109.2 bhp atrw with proof. very tidy bike with a few little marks. kept in a garage undercover. poeple in the southwest might of seen it about, been up v&j superbike shows a few times,big crowd puller, 12 months mot. whats it worth? oh and a modified airbox with a k&n panel filter fitted with the dyno tune! its loud!
  2. troyboy

    boost yamaha

    hi, i recently bought this months superbike magazine and to my suprise there is a pull out section on the cadburys boost yamaha team from back in the day! I have a 1998 boost yzf750sp and dont really know how many were made and more importantly how many might be left. Does anybody have one of these bikes as i have a few questions. I know mine was won in a competition. should i buy an old shitter to throw up a track? any info would be handy. thankyou
  3. hi mate, i have a yzf 750 sp and my rear wheel bearings went, i heard a metallicy noise and felt rumbling up me legs, so that could be ur noise. no movement in a roller type bearing is good mate and you really dont want to be riding it like that. remove ur rear wheel and get the numbers off the bearings (i changed all 3]. its a really easy job if you have half a clue. [the rear hubnut is 32mm, and should be retorqued to 190nm] DONT pay through the nose on maindealer prices, go onto a bearing specialist site type in the numbers of the bearings and hey presto a 1/4 of the price! oh and be carfull of getting the copper bush in the centre of the cush drive bearing out, its fragile, knock it out with the right size socket. as for 190 section ive heard it has been done, there seems to be plenty of space, different makes different widths? not sure of the ridability factor. let me know on the brake pads, why not fit a nice set of wavy disks aswell? oooh
  4. troyboy

    exup valves

    hi, i have recently wired open the exup valve on my yzf750sp, the pros, the bike isnt jerky below 6000rpm if i crack the throttle open really fast anymore, the bike pulls better down the revrange [pulls hard from 4000] not as bad engine braking when the throttles shut making the bike easier to ride in the rain, {no rear wheel lock up when down shifting}. exhaust sounds lovely. i have a micron slip on. the bike doesnt stall on cold start due to less back pressure. the bike is a completly different beast to ride. oh and i knocked half a second off me 1/4 mile time. now the cons. i have a stinking flatspot at 3500-4000 rpm which im getting sorted on a dyno in a couple of weeks.unfortunatly i ride 2 work in that revrange and it does me head in. most people put up with it by all accounts. i tried the de exup route, it works for me mate.
  5. troyboy

    exup valves

    hi, i have recently wired open the exup valve on my yzf750sp, the pros, the bike isnt jerky below 6000rpm if i crack the throttle open really fast anymore, the bike pulls better down the revrange [pulls hard from 4000] not as bad engine braking when the throttles shut making the bike easier to ride in the rain, {no rear wheel lock up when down shifting}. exhaust sounds lovely. i have a micron slip on. the bike doesnt stall on cold start due to less back pressure. the bike is a completly different beast to ride. oh and i knocked half a second off me 1/4 mile time. now the cons. i have a stinking flatspot at 3500-4000 rpm which im getting sorted on a dyno in a couple of weeks.unfortunatly i ride 2 work in that revrange and it does me head in. most people put up with it by all accounts. i tried the de exup route, it works for me mate.
  6. has any1 fitted a kevlar clutch to their road bike? are they usable on day to day commuting. thankyou.
  7. hi guys, im after a little advice, i have a yzf750 sp i use for drag racing and a daily commute [ if the weathers nice!]. After 25 hamfisted starts on a very hot day the clutch started to slip and now the biting point of the clutch is right at the top of the lever which would suggest ive worn the original clutch out. I am considering fitting a kevlar clutch but on reading the product information it says the clutch lever has a completly different feel over the stock item, i dont really want the back wheel locking up on me on everyday riding as the biting point is too fierce [on of off]. I wondered if any1 has fitted a kevlar clutch to thieir bike and got on well with it or gone back 2 the stock clutch with heavy duty springs. although the kevlar clutch is double the price of a standard clutch and heavy duty springs [that isnt a problem], i dont want to sacrifice decent road riding so i can benifit 8 times a year drag racing. at least i know the kevlar clutch will take the stick. is a standard clutch and heavy duty springs the way forward????????? thanks
  8. hi, i have a 1998 yzf750 sp, im lookin into fitting a extended swinging arm as i use the bike for 1/4 mileing. i was wondering if the early r1 arm is the same, the bracing and the chain sliders look identical but wasnt sure about mounting hole dimensions etc. i know the r1 runs a 190 section tyre where mine is a 180, will my wheel just slot in? im looking for this info as i think i have more chance of finding an r1 extended arm on ebay than the a yzf type, i dont want to spend 750 quid on a jmc item if i dont have to. tightass any help much appreciated.
  9. thanks for the help guys. that has thrown a bit of light on the subject.
  10. hi guys and girls! sorry 2 bring up the dreaded exup valve again but ive looked every where for a decent answer to this question, so many different opinions on this! i have a yzf 750 sp, the exup valve is working fine but im after a few sneeky torques of maybe a horse or 2! some poeple rave about wiring the exup valve fully open and leaving the servo so you dont get the error code. is it even worth doing this? i have a carbon micron tail pipe on the bike already, should i bite the bullet and buy a new header and junk the exup valve completly? i use the bike for 1/4 mileing and road rideing i dont really want to cause trouble by gaining more top end and loosing out at the bottom end with stinking great flat spots! OR should a leave well alone and spend me cash somewhere else on the engine! (standard). any help would be appreciated, thankyou.
  11. troyboy

    hate to loose!

    hi guys and gals! heres another quick question for ya's. does anyone know what the average sports bike (eg r6 etc) will beat, in a midrange race on a motorway/track against your run of the mill scooby, evo, super type car? does anyone have any good hyper/supercar scalps under their belts? on the flipside has anyone on a low power machine beat a relitivly powerful car and chuckled their arses off when they got home? i have a yzf750 sp and don't wanna get beaten by sum crappy porker do i!
  12. hi guys. just a quick question. as i have my yzf750 sp apart at the mo doing my spark plugs is it worth me drilling the airbox? does anyone know the pros and cons to this? i will drill the right side! honest. thankyou
  13. my new years resolution was to lose a little wieght to get my quarter mile times down at westonzoyland this year, but as ive had half a tin of roses for my tea i dont think its gonna happen somehow! theres always next year.
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