Quote:
Originally Posted by Ryan
not looked into newmans if im honest.
I remeber when daveP went from the 715s to 708s in his tbd hillclimber, The graphs for this to explain why are on the RR somewhere.
iirc it was that the 708s produced the power with a bigger powerband, lower rpms initially and the 715s barely produced much more.
Ive not checked the graphs for ages though
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OK, that makes sense.
It's just that if 708s are right on the limit, I can't see how you could run a cam profile giving a higher lift (and the same duration) or a cam profile with a longer duration (and same lift) ... I assume this few mm gap you have with 708s is at the start of the intake stroke, so a longer duration cam profile would mean that the intake valve would be more open at TDC, hence the problem. An increase in lift speaks for itself... If anyone knows how this can be done, let me know, as I'm interested to learn!
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