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Old 01-05-2013, 11:27 AM
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how old is too old for valve springs?

my heads were on an engine in storage with the rocker arms still tight for 25 years. water got in the intake and they have already been redone. but the guy said the springs were okay and re used them all, they never got rusty, but still they have had tension on some of them for 25 years. in my opinion they must be junk, and he should have changed them. this is on a relatively low revving (below 6000) pontiyack motor. your thoughts?

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Old 01-05-2013, 11:35 AM
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Did he check them all for pressure/installed height and pressure at max Lift?
If you are buying a new cam, springs are cheap verses ...
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Old 01-05-2013, 11:41 AM
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HE said he checked a couple and they were fine. i never told him about the motor being in storage!!!

i think i know where this is going.........
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Old 01-05-2013, 12:13 PM
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They all need checked on an individual basis. It only takes one weak spring to ruin your day.
I would have them dissasembled and checked, properly. Then make a decision. If they are good if they are shaky or one or two is borderline then ...
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Old 01-05-2013, 12:16 PM
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Quote:
Originally Posted by bullheimer View Post
HE said he checked a couple and they were fine. i never told him about the motor being in storage!!!

i think i know where this is going.........
If they check out run em. They are good for thousands of miles. A few years setting can be an issue but probably not. But for the price i would have replaced them.

You would need to check them all the ones that were down may be weak. But still able to run for a while but as the miles tick by they will also be the first to fail.
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Old 01-05-2013, 12:38 PM
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Every time you shut your engine off the springs sit at different tensions, so if your engine has enough idle time over the years it's going to have a lot of time with compressed valve springs. The big thing is to check every one, not just random springs. If they all check out, then years of sitting or running doesn't matter.
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Old 01-21-2013, 03:17 PM
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Thanks, will have to read up on checking them, as I can install and chech bhramaputra. But not pressure.
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