7 replies to this topic

[Dave Weber]

Valve springs and dampeners

Ok this a something we commonly do

Reach out to the experts to get input on use of their product. Sometimes to confirm what we believe as in this case. And sometimes just to get direction . Either way it is always best to reach out to the people that design the product.



Read bellow:













> From: Cameron Shelton [[email protected]]

> Sent: Thursday, August 18, 2016 2:05 PM

> To: XXXX

> Subject: Spring Dampeners

>

> Hey XXXX,

> I'm sending a set of springs removed from a customers heads that they were told to re install stocks spring dampeners. This motor was ran long enough to use a tank of gas and had a bottom end knock come about. We are told the springs are brand new but we want your opinion on running the dampener and the amount of wear on the spring caused by the dampener. Three springs and three dampeners are leaving us tonight for you. Thanks and looking forward to hearing back from you.



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> On Aug 30, 2016, at 10:03 AM,

wrote:

>

> Cameron,

> We do not recommend using this type of spring dampener with our spring. The diameters are not the correct size and I believe it will cause more harm than good. This kind of spring is not designed to run with a dampener and If you think that you are having harmonic issues maybe look into a different valve spring. Hope this helps and if its alright with you I will be sending these back when I hear back from you.

> Thank you,



> XXXX | Drag Race Technical Support | Performance Springs, Inc. | 57575 Travis Road, New Hudson, MI 48165



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From: Cameron Shelton [[email protected]]

Sent: Wednesday, August 31, 2016 6:58 AM

To: XXXX

Subject: Re: Spring Dampeners



Dave,

Thanks for looking into these for us. Dave has never liked using a dampener and these where just brought in by a customers that assembled his own heads. We have seen many come in from people who do there own installs running these dampeners on your springs and we wanted to confirm that this wasn't right. Dave has always chosen springs based on cool bind to keep harmonic issues in check and that's how we will continue.



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[kilo1]

Funny you should bring this up . the 6.4 core I just bought  had broken a Valve spring and thus dropped the valve broke it and rammed the valve stem through the piston . will be upgrading springs But what do you normally use for valves ? 
Nothing Fancy just a well built 6.4 will be using your drop in pistons and rods as well as maybe the NSR cam or possible custom grind.

[Modern Muscle]

Stock 6.4L Valve's are good for most. OEM is a hollow stem intake and sodium filled exhaust.

[kilo1]

yes I can confirm that they are hollow but they saved the block

[Dave Weber]

yes I can confirm that they are hollow but they saved the block

Was spring that broke a factory spring or aftermarket?


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[kilo1]

Was spring that broke a factory spring or aftermarket?


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Factory Dave at 3k miles  , Which I know you sell the NSR cams but think I might as well upgrade them . Little farther down the road I hit you up on which way to go for a cam NSR or Custom.

[Dave Weber]

Factory Dave at 3k miles , Which I know you sell the NSR cams but think I might as well upgrade them . Little farther down the road I hit you up on which way to go for a cam NSR or Custom.

You say 3000 miles
What was build? New stock engine?
What are mods


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[kilo1]

You say 3000 miles
What was build? New stock engine?
What are mods


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 Dave it was a stock 3k mile 2013  SRT Challenger automatic , service engine installed as replacement I just bought the core, one of the few benefits of a dealership Parts guy.