Rodney87GN
Well-Known Member
- Joined
- Feb 1, 2004
- Messages
- 1,931
What kind of life expectancy are you guys getting with your valve springs? By life expectancy I mean how well the spring maintains its pressure at its installed height before they require replacement.
I know this is a pretty general question, and I realize it depends on the combo and intended usage of the car. So I guess this question is aimed more towards you guys with 10 second cars that see many street miles.
I run K-motion 750 springs on ported irons, 210/215 hyd roller, Morel lifters, and stock rocker arms. The springs are installed at 1.700" for 130 lbs closed, 395 lbs open pressure. Boost is at 26-28 psi. I've been running the K-motion valve springs for 3 almost years...most of those are street miles with about 50 dragstrip passes.
I guess I can pull em off and have them checked at the machine shop, but springs aren't that expensive so I might as well replace them anyway since I have the old ones off. Any helpful insight would be greatly appreciated!
I know this is a pretty general question, and I realize it depends on the combo and intended usage of the car. So I guess this question is aimed more towards you guys with 10 second cars that see many street miles.
I run K-motion 750 springs on ported irons, 210/215 hyd roller, Morel lifters, and stock rocker arms. The springs are installed at 1.700" for 130 lbs closed, 395 lbs open pressure. Boost is at 26-28 psi. I've been running the K-motion valve springs for 3 almost years...most of those are street miles with about 50 dragstrip passes.
I guess I can pull em off and have them checked at the machine shop, but springs aren't that expensive so I might as well replace them anyway since I have the old ones off. Any helpful insight would be greatly appreciated!