Originally Posted by iambigperm
Just got back from testing the springs. They were 190 seat/450 open using an on-car tester. I found the box the springs came in and they are the 68385x2 springs and retainers. These number appear to be spot on for that part. I think this should be enough pressure, but my machinist said he likes at least 240 on the seat for a solid roller and did recommend heavier springs. I'm really not sure where to go from here...
Crower specs thses springs at 166 lbs closed at 1.9 inches measured between the the bottom of the retainer and the top of the pad and 469 open at 1.2 inch. Why are yours different, are there shims under the springs or is the valve stem shorter, spring pad higher?