60lb spring talk
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If you are going to do this and run more than 50lbs of boost and have a 4k GSK you need to upgrade to better keepers and retainers. 60lbs springs with stock retainers and keepers DO NOT prevent the keepers from being pulled THROUGH the retainers. We have had 2 engines do this and one was found after a catastrophic failure that beat the valves from being the cause of the failure. It is more money to go to the 150# springs and the upgraded 10* locks and retainers but the money spent here is better than a dead engine. Just my .02.
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daveO (05-20-2011)
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