I'm not saying the seat pressure didn't drop. But I've seen 20-25 seat pressure change and 100-125 open pressure change from original setup.MadBill wrote:I'm trying to get my head around this. The spring rate would have to change. How that can happen?cspeier wrote:..The seat pressure is always good, open pressure goes away.
I keep tabs on my springs. And who I think has the best spring would completely disagree with many.
I won't ever use a dual Manley Nextec or PAC 1224 on a 2.300/2.350 stainless, 7500 RPM BBC ever again.