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Which valve springs to use

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Hey all,


Just wanting to nail down which crow valve springs to get.

I've got the mods for a 310-320ish rwkw tune, pw stage 2 cooler, piping kit, turbo side intake, larger fuel pump, etc etc.

I still need injectors which will probably be kpm 1000cc units, easily procured here in NZ and valve springs.

Mace Engineering NZ have a reasonable price on Crow items but not sure whether to get the 1808-24 with 95lbs seat and 195lb open and use stock retainers or the 105lb seat and 205lb open which appear to need crow retainers? Mace kit part # is SPG-613 for the 105lb ones with retainers.

It's a strong possibility I'll upgrade turbo and exhaust in future so maybe 370ish rwkw is on the cards and not sure if the 1808-24 items will be up to it?





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