you sure that wasn't rod knock or similar?Originally Posted by love ke70
it should be VERY difficult to produce knock when there is no load and buggerall mixture in the cylinders. IF it did knock under those conditions, then under partial throttle at those same rpm, it would knock like a bastard.... methinks you had other issues
i ended up going back from about 25 to about 20deg advance (with slightly modified advance mech) using 98, big cam with lower dynamic compression and about 7500rpm-8000rpm (and highly modded combustion chambers)
although i could not produce a knock even winding advance right up (like 35deg) it still felt better and made more power with about 20deg base advance. any more and it started to fight itself... you can hear a slight change before you can feel the difference tho.
however... on 91, it would ping (tinkling) even with about 10-15deg advance... i only ever made that mistake once![]()
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