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Valve Spring Help

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Old 06-04-2004, 04:39 PM
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Question Valve Spring Help

I have a G5X2 cam 2.08/1.6 valves and 921 springs. I put the car on the dyno today at Xtrem Motor sports and acording to them at 6300 rpm there was bad valve float. The springs have the correct seat pressure. I thought the 921 were good springs.
Old 06-04-2004, 04:48 PM
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Are you in AZ? I have the 921's and the X3 and the springs seem to be doing a good job. How can they tell if there is valve float on the dyno?
Old 06-04-2004, 05:07 PM
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Originally Posted by Orange Peel
Are you in AZ? I have the 921's and the X3 and the springs seem to be doing a good job. How can they tell if there is valve float on the dyno?
Yes I live in Mesa, at 6300 the hp curve wen't flat.
Old 06-04-2004, 05:23 PM
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What's your name? As for the curve, that sounds weird, not sure what you can do but take the cover off and check them, you have probably already done that anyways. What was the power at when it went flat? Did it do it repeatedly?
Old 06-04-2004, 08:06 PM
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I have this problem with the new crane spring at 6000 rpm. I'm thinking it's a problem with the install height. Shimms anyone?




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