Valve springs April 16, 2021 11:50AM
What are symptoms of low valve spring pressure during a pull. Thinking I may have a problem with them.

Re: Valve springs April 16, 2021 12:22PM
What is your seat pressure. Open or limited rpms? Turbo?

Re: Valve springs April 16, 2021 01:44PM
3000 rpm 3x3 turbo

Re: Valve springs April 16, 2021 02:02PM
How much boost are you making and what are your valve sizes? Also seat pressure?

Re: Valve springs April 17, 2021 11:36AM
Boost is 65lbs not sure on seat pressure. Runs almost the same in 2 gears gets towards end an just dies out. It used to pull both gears easy an pull to lower rpm then it has its last several pulls. Never really changed anything was just curious if valve springs have gotten weak.

Re: Valve springs April 17, 2021 03:06PM
Quote
Mhf
Boost is 65lbs not sure on seat pressure. Runs almost the same in 2 gears gets towards end an just dies out. It used to pull both gears easy an pull to lower rpm then it has its last several pulls. Never really changed anything was just curious if valve springs have gotten weak.


Your seat pressure needs to be AT LEAST 2 times the boost pressure. And it doesn't matter what size of turbo or rpms that you are turning. Now there are many that will disagree with me and that's ok.

Re: Valve springs April 18, 2021 03:21AM
Will do thx for advice.

Re: Valve springs April 16, 2021 12:54PM
Been there. In my situation the waste gate didn't open up to where I had it set. It didn't have to as the valves became the waste gate.

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