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Valve clearance and stiffer valve springs
Hi guys,
Stiffer valve springs made sense to me for stock pistons for the margin of safety they offered with the 964 cams and for overruns from missed shifts.
The valve pocket on some 98mm 10.5:1 JE's I have is so deep that I have a minimum of something like 4mm of clearance between the valve and the piston with 964 cams.
The next motor in the pipeline is a 3.2 short stroke with JE pistons and 964 cams. I don't want to spec stiffer springs unnecessarily.
I'm wondering how much clearance you need before stiffer valve springs don't make sense? Any thoughts?
-Chris
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