Question about valve spring tension ??
#1
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My head is in the machine shop and I was told at height @ 1.6 the valve spring tension should be 128-130lbs , no less than 120lbs . Mine are @ 118-120 lbs, my machanist has informed me .. What should I do replace , shim, upgrade, ??? Car is slightly modified, but nothing major. Also my use is recreational weekened driving. Thanks for response ..... Davepnola
#2
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shimming should be used to correct height only, not to correct spring rate. Although some of those chevy driving rednecks may tell you different. Good thing I dont see any on these boards!
#5
Three Wheelin'
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some good springs would be of benefit although those aren't too far out of spec, I assume the car doesn't stay near the redline for any extended period of time they are ok. Not sure on the exhaust ports I used a non turbo head and ported it
#6
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don't hurt the ceramic in the head.
I would get new springs for anything over stock boost, JMHO. The last thing you want to do is float a valve if you're out having fun with the car and you'll know you can have room for upgraded performance in the future - the head is off and at the shop.
I would get new springs for anything over stock boost, JMHO. The last thing you want to do is float a valve if you're out having fun with the car and you'll know you can have room for upgraded performance in the future - the head is off and at the shop.