6.2 breaking valve springs
12-14-2011, 12:04 PM
#21
You would really expect us to "warranty" a set of heads that is several years old, and has had multiple owners? Whether you call Summit, Jegs, WCCH, Walmart, etc that isn't going to happen. The heads have a 90 day warranty, first off. We've been known to take care of issues if there was clearly something we did wrong. But these have a LOT of miles on them, have been through numerous combos, etc. Expecting warranty on these is absurd.
Thanks for replying to the thread & setting the record straight Matt. If they were used heads that are that old, there shouldn't be any warranty on them at all.
12-14-2011, 12:32 PM
#22
I am not trying to bash Mr. Layton. He has called and wasn't a d-bag like some could be in the same situation, we told him the same thing, and that was the end of it. I just felt I needed to clarify for the online guys who always want to post and act like someone not offering warranty is somehow doing an injustice to someone else without knowing the story and situation.
Last edited by Matt@Texas-Speed; 12-14-2011 at 02:09 PM.
12-14-2011, 01:09 PM
#23
You would really expect us to "warranty" a set of heads that is several years old, and has had multiple owners? Whether you call Summit, Jegs, WCCH, Walmart, etc that isn't going to happen. The heads have a 90 day warranty, first off. We've been known to take care of issues if there was clearly something we did wrong. But these have a LOT of miles on them, have been through numerous combos, etc. Expecting warranty on these is absurd.
12-14-2011, 03:42 PM
#25
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I gotta 05 gmc pickup with a 6.2 engine with l92 heads and it has a broke valve spring for the 2nd time. The first the engine had a tsp 220/220 cam with prc dual valve springs. I didnt do the work but the owner of the truck claimed the tech had told him he broke 3 different springs. The tech replace all the lifters and springs with ls7 lifters and a dif brand of dual valve springs (he dont remember the brand). He then drove for about 2k miles and I put a mid 230s with .620 lift cam in it. We got it retuned and he drove it for another 7k miles and now it broke a valve spring on the intake valve. The valve is completely loose in the guide so Im not sure what all is broke. Im going to remove the head tonight. Anybody heard or have a 6.2 break valve springs this often? any help is appricieted.
12-19-2011, 03:05 PM
#26
I know the truck is up and running again but something caught my attention as to why a spring may have failed. The truck has ls7 lifters and if ur running 7.4 pushrods on a cam that more than likly has 230+ duration and .600+ lift dont u think it could be cause of wrong pushrod lenght? Just my thought but iirc the truck had kinda noisey valvetrain after that last cam swap he did.
12-19-2011, 05:11 PM
#27
Unless the push rod was wayyy to long I don't see how that could brake a valve spring, you would have to push it past its limits of 650 lift and with a 600 lift cam it would'nt even close the valve all the way and make like no power. Thats what I would think anyways?? Iv never seen anything like this eaither, Normally its side to side movment that makes valve springs weak and brake like a wore out valve guide, as you can see in this vid they already have alot of shakey movement at hi rpm.
Valvespring at 7000 RPM - YouTube
Valvespring at 7000 RPM - YouTube
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