Valve springs

[Johnny nofear]

What valve springs shod I use if I am running 20 ponds of boost ?


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[PobodY]

Won't standard valve springs take that?

 

[Johnny nofear]

No I am getting valve flout at high rpm


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[fubar andy]

20psi @ 1.38bar should be no issue for the standard RNN14 valve springs.

Even 2.0bar @ 29psi should fine.

Are you getting valve float or has someone told you?

 

[PobodY]

That's exactly what I was thinking Andy; maybe the redline has been set too high rather than being a problem with the boost level?

 

[Johnny nofear]

After hard pulls rpm go up to 1500 and then stay wen idle


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[Johnny nofear]

Old valve springs I was thinking


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[fubar andy]

After hard pulls rpm go up to 1500 and then stay wen idle

Welcome to GTiR ownership!

My RPM was at 1800rpm for 5 years!!!

Its more likely you have an air leak in your boost system. I removed the ICV and surrounding pipe work now it runs an average @ 990rpm (via Nistune)

 

[Johnny nofear]

I am running new link G4+ first winter with the new ecu have had the car 3years now love it would not ever sell it have 3 kids and she is my 4 lol so air leek u say well willdo a vacuum leek [emoji736] tonight it thanks I will start there


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[PobodY]

My high idle was mostly due to a leaky dump valve. - At idle the vacuum was strong enough that it could pull the piston open... letting unmetered air in to the engine.