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if anyone out there is a qualified motorbike mechanic or small engine mechanic or runs a small shop i have a 04 yzf450 that needs a top end rebuild and gearbox rebuild the engine will be supplied out of the bike with all parts all i need you to do is break it down and put it back together will only let someone whom has done this before do this.

cheers jason

I've been rebuilding/modding bikes for 19 years. Not qualified, but never had one blow up on me. Build my own race bike and swapped many gearboxes, including a clapped out ZXR750.

Might know of a few guys if you want someone qualified. Just need to check who's still in the industry.

:O

pm me a contact number and will ring and have a chat just after some one who has done these engines before as 4th gear is jolting slightly when in gear may have a bent selector fork so might need some know how of the engine itself not sure.

It is rare that 4th gear problems would be the result of a bent selector fork. Thats normally a sign of 2nd gear abuse (wheelies, drag racing etc). can you give me a better description of the problem. Is the 'jolting' in a given rev range (maybe a tuning problem) in 4th or might even be a output gear thrust bearing problem ... could be anything really. Does it jump out of gear? = bent selector and worn gears. In any case, you'd want a gearbox lined up and selectors too, before starting the swap. I did the job to my brother's ZXR (he had no 2nd gear whatsoever), my old Honda and a mate's TLR (big v-twins chew sprockets then gearboxes) :O

well the bike runs and starts fine and acclerates in all other gears perfect but when put into 4th gear and you try to acclerate the bike jolts constantly it doesnt jump out of gear as such it just jolts along as if you were hitting a fuel cut weird really.

Dangerman has a R1 in his quad bike don't know if he re built it himself and don't know if he does work for other people

but the thing is absolute nuts

LOL get it right Steve its a zx10r engine....

and yes i have and can rebuild them, but no im not interested. to much work on as it is....

Edited by dangerman4

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