Join Date: May 2005
Location: Gloucester, UK
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The reason it is peaking early on power and not ticking over is definately because a cam is a tooth out. You'll probably have 15bhp more at 8krpm than a stock bike i bet!
Tightening the shims for track use LOL. The guy you bought the motor off must be a darwin award winner LOL. Race clearances if anything want to be looser. Looser gives more power.
If you are getting poor compression on a 2500 mile engine that has had the cams installed wrong then chances are the valves on the cam side are bent. Then again maybe the rings are shagged because the previous darwin winner tried extra virgin oilve oil instead of 10w/40 LOL. Don't worry, a new set of valves is only $450 and you will need new retainers and cotters too.
In all seriousness though, sorry to hear of your problems. Nice to see someone getting their hands dirty and trying to fix it. Do a leakdown test, forget the comrpession test. You will see straight away where the problem is.
Lastly, it may be worth having a close look at the cotters. Put a vernier on the tip of the valve and measure the distance to the retainer top. If any of the readings are more than 8 thou different from the rest then the whole lot needs to go in the trash. Its a quick way to test the state without removing the head.
Hope this helps.
Race Developments, UK. Race engines and dynojet centre.