Just checking over a Sprint engine I have bought and found a few "issues".
The engine came from a rally car, said to be lightened and balanced with a Newman PH3 cam and running on twin 45DCOE Webers. First thing I noticed was no chain wheel support bracket or cam sprocket locating pin fitted. The straight chain guide only had one fixing bolt. Bit of a worry now because whoever built it was obviously not very particular. There are no markings at all on the cam that I can find so I measured the lift and it is approx 0.400" so that seems about right for a PH3.
I have an adjustable cam sprocket so thought it would be worth putting that on and checking the cam timing at the same time. When I tried to fit the cam pulley I find that the sprocket locating pin will not fit the hole in the end of the cam, it is too big. Not by much, maybe about 0.010"-0.015". I will get it turned down tomorrow but that presumably explains why there was none fitted. Too much trouble to get one modified.
Anyone else come across this problem before?
_________________ Russ Cooper
Dursley
UK
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