ws66

Well I think my springs let loose because I have some noise on the pass side valve cover and those springs are like brand new not even a 1000 miles on them. Has this ever happen to anyone with these springs? I bought them from texas speed. I'm going to pull the valve covers off wed or thurs and see for sure. I am getting miss fire readings and it say its #3 and #6. let me know what you think. thanks

SOMbitch

iTrader: (8)

Did you heat cycle them a few times before beating on them? If not that is tough on them. I still doubt it's a spring with only 1000 miles but stranger things have happened..... Good luck!!

ws66

I sure did

Sales2@Texas-speed

iTrader: (5)

Pull a cover and check it out. That's a big jump to a conclusion without anything but a sound to base it off of...could be a rocker arm that spilled its beans, broken valve, dead lifter, etc.

Let us know if it's a spring and of course we'll do everything in our power to take care of you though!

Yeahdoug

Myth.

SOMbitch

iTrader: (8)

Please explain why because most of us on this board practice this. In fact I have been practicing this for 25+ years with my Gen 1 stuff. Please provide RESEARCH & DOCUMENTATION with your reply. I have just been doin what I was taught

It does make sense in a way as engine temps are much lower than temps required to temper steel

ws66

well pulled the valve covers off and its the pass side two springs broke and its the outer spring that broke. thanks

Sales2@Texas-speed

iTrader: (5)

Shoot me your name and we'll get you taken care of!

Yeahdoug

You pretty much answered your own question.

I can not provide documentation/test results as it is proprietary to the manufacture. Only my experience from running the dynamics/durability lab at a major spring manufacture.

The more temperature they see generally the more load loss will occur, but heat cycling them isn't going to increase the life of a typical aftermarket spring. Keeping them cooler will though (oil sprayers/flooding the valve covers).

There is no "break in" procedure for a valve spring. 99% of failures are from:

-Over stressed Design or improper material/processing used.
-Bad dynamics causing a over stressed condition (wrong spring used).
-Manufacturing Defect.
-Handling Damage.

That's pretty much it. Heat cycling/"breaking in" the springs will do nothing to help with these failure modes, but it won't hurt it either I guess.

WKMCD

iTrader: (2)

So how about letting the oil temp come up before you hammer the springs?

Yeahdoug

Doesn't matter for the springs. They will actually last longer at room temp.

But other parts of the engine need temp.