Valve gear

StarionChef · Post by **StarionChef** » Wed Jan 21, 2004 12:41 am

Has anyone tried heavier valve springs on the sohc 4g63?

Barney · Post by **Barney** » Wed Jan 21, 2004 1:45 am

I was told by a guy that rallys starions that it was crucial that you replace the valve springs with heavier ones.

I believe that at high revs and high boost, the valves dont close as the cam lobe rolls. this causes the engine to have problems reving. I have spoken to many mechanics even ones that have worked on older V8's, and thay have all said that heavier valve springs are a must.

when i replace my cam i will be fitting heavier valve springs.

ASHLY

sigmaproject · Post by **sigmaproject** » Wed Jan 21, 2004 6:06 am

You can also shim the standard spring to obtain greater spring pressure.

Post by **Alspos** » Wed Jan 21, 2004 9:07 am

I have double ones.

Austarion

Valve gear

Valve gear

springs

Spring pressure

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