Quote:
Originally Posted by johnneilson
Rick,
Dan's gears will work just fine, modify the front cover for the set screw to set end play.
IMHO, this is more of a function to try and keep control of the ignition timing when you start running close to detonation.
The amount of cam walk is typically a function of valve spring pressure and the flexing of the cam. You mention 5 mains, I assume 5 bearings on the cam too.
If you are running something like a 4 port Riley with 8 intake valves, you just have to watch the spring seat pressures are not too high. You have two springs per lobe and then the rocker arm ratio multiplication. The good news is, those can be adjusted without disassembling the entire motor.
Stay safe these days, J
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Hey John, yes 5 brng cam (Jim B).
Great info and lots to think on , thanks !
I’ve always been advised that...cast iron & alum...not best used together! I’m a believer. So it’s a matter of locating alum head that will ‘light it up’. I’d bet that you know whose head I’ve been waiting on ! Have been ‘holed up’ for tooo long, trying to stay healthy. NEVER bored, as plenty to do !
Be safe !