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202 VALVE SPRING PRESSURES

Started by _judgelj_ , Apr 20 2011 09:23 PM

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3 replies to this topic

#1 _judgelj_

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Posted 20 April 2011 - 09:23 PM

G'day

Quick question, had my valve springs tested when i picked up my cam and lifters and they turned out to rate at 60 pound as doubles. now im guessing they are old and probably seen better days. my logic was that its not a big dollar motor and not to worry about the extra money involved in replacing springs, but ive had a few people drill me about chewing out cam lobes, lifters as well as valve bounce and float.

Now the same head shop quoted me $150 for crow springs (singles not doubles) which are rated around 120 pound and also advised me that the cam i purchased (33/73) was rated for 100 pound springs.

I'd like to hear from people who've experienced this sort of thing and who can advise me of the correct path to take.

I'm leaning towards getting it done just wanted to hear a few more opinions before committing.

Thanks in advances guys (and girls)

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#2 warrenm

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Location:Central West NSW
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Posted 21 April 2011 - 08:11 AM

At 60lb, the valves will bounce with a few revs & hammer the cam & eventually destroy it. 110-120lb is about right for a Holden 6. My advise would be to change the springs.