mysticj
15+ Year Contributor
- 325
- 29
- Apr 12, 2007
-
charlotte,
North_Carolina
What are the biggest cams to run on stock evo springs with max redline of 7200? FP2? HKS280?
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I am not a big fan on the evo spring.
Read this thread, post 19 talks about the evo spring
http://www.dsmtuners.com/forums/newbie-forum/341209-4g63t-valve-spring-info.html
I doubt the evo will take a 280 cam
I bought mine when Evo springs were $40 shipped from most people. So it's almost no waste of money for me if I should just toss them. I just don't want to spread bad info.
Having the head rebuilt but running Delta 272/264 on a 10.5:1cr 2.4L. Redline is at 6500rpm. Delta 272 has 9.8mm lift and the 264 has 10mm.
9.8mm x .03937=.386 lift
10mm x .03937= .394 lift
From the other math if you set the springs up at 1.530 @72 psi
you should be alright.
You will be working the sping around 89%
As long as the machinist that assembles the head properly and checks all the main points.
If he dose not, then the engine will rev really lazy. Throttle respones will be nushy and not crisp.