12v Valve Spring Pressure Question

12v Valve Spring Pressure Question

09-28-2005, 02:46 AM

#1 (permalink)

SWithers

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Join Date: Oct 2003 Location: virginia beach, VA Posts: 4

12v Valve Spring Pressure Question

pardon me if this is a repost i tried searching with no luck. i have a 12v that i picked up at the local junkyard. when i set up and measured the valve spring installed height and put the spring in the rimac spring tester. i'm showing 85-90 lbs of seat pressure. piers said that the stock springs are 35 lbs which is a far cry from what i am measuring.

what is the height in which they are measuring the spring to get 35 lbs or are they saying fatiuged springs measure 35 lbs.

i just don't buy it. 35 lbs come on at 25 psi of boost you would only have 10 lbs of spring pressure to control the valve. hell @ stock boost you would only have 17 lbs controlling a 112gram valve and a 42 gram retainer. even at 3000 rpm being max i would think you would have valve float.

__________________
97' 3500,auto, #10 plate (sucks), 370 injectors,thinking about a #6 plate trying to granade the tranny lol.

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