Broken Valve Springs
Broken Valve Springs So I took apart the driver's side valve cover to inspect the FOD I had found on my oil drain plug magnet during my oil change. This is what caused it! Over 45,000 miles of abuse racing and WOT. I did however allow the engine to reach operating temps when I daily drove to work. The 1st picture is #5 intake spring and the other is the #7 intake spring (lower portion is collapsed). I just ordered new Patriot dual springs to replace these, they will be on the car by the weekend. Luckily it is only a 2 hour job. 
Last edited by 12secSS; Mar 26, 2009 at 10:07 AM.
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Dual springs aren't there as a safety net - they're there when the engine build dictates it.
To me, replacing one set of patriot springs with another is just
These springs actually have over 45,000 miles on my car (unlike I previously stated), previously used on a diffenret vehicle project of mine. They were not brand new when installed on this car, if that is what some of you are thinking, these were used springs! 
I am replacing them with new springs. 
I am replacing them with new springs. 
My wife took it drag racing and ran a 7.71 @ 91, that weekend I changed the oil and noticed a piece of valve spring on the drain plug. I parked it until the next weekend to diagnose the valve spring, which are the pics you see above. No loss of performance was noted prior to the findings. This post was merely to inform people to check your springs once in a while.
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how can you tell they went bad... im not exactly sure what im looking at in the picture...
my ls just started making a horrendous noise
http://www.youtube.com/watch?v=qFqrF7mMhh4
and i wanted it to be a valvetrain problem .. of course no one wants bottom end problems
what do you think/what should i look for
my ls just started making a horrendous noise
http://www.youtube.com/watch?v=qFqrF7mMhh4
and i wanted it to be a valvetrain problem .. of course no one wants bottom end problems
what do you think/what should i look for
i had springs break before, thank god for dual valve springs. i was driving down the highway normally and then my car started missing. when i checked over everything i found 1 broken valve spring. replaced them with all new patriot golds and has been fine ever since
how can you tell they went bad... im not exactly sure what im looking at in the picture...
my ls just started making a horrendous noise
http://www.youtube.com/watch?v=qFqrF7mMhh4
and i wanted it to be a valvetrain problem .. of course no one wants bottom end problems
what do you think/what should i look for
my ls just started making a horrendous noise
http://www.youtube.com/watch?v=qFqrF7mMhh4
and i wanted it to be a valvetrain problem .. of course no one wants bottom end problems
what do you think/what should i look for
EDIT: Based on your video it is hard to tell, but it sounds like a rod knock or a broken intake valve spring. It could also be the intake rocker failed or fell off.
45K miles on those springs are pushing it to start! Even the beloved PAC's won't appreciate that abuse for 45K miles!
Glad you were saved
Glad you were saved
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
