Head Info

[-_-StRyDeR-_-]

hey guys, just got a quick question...

im doing the whole 25head onto 30block build.

so far the head has stainless valves on the exhaust side, tomie valve springs, ported up slightly, 3 angle grind, and the oil galleries de-bured.

im also going to be puttin in a speedflow 90degree bend at the back of the head flowing back to the sump.

NOW... my question is... should i upgrade the retainers and collars?? some say yes, other say dont bother.

im not sure on how big il be going with the camshafts... (so the head will be gettin ground out a little just incase i go pretty big)

il be honest and say im not 100% sure on what the retainers/collars, stiffer springs put more pressure on the retainers that hold the valve... :S im probably way off haha, please correct?

so... retainers and collars??? price??

any information is greatly aprreciated.

thanks

CJ

[-_-StRyDeR-_-]

i spose this would go out to all rb25 builds, not just 25-30's

[-_-StRyDeR-_-]

no ideas?? :s

[lwboosted]

i didnt bother with mine..

[Adriano]

How much power/revs are you looking at running. Aftermarket retainers are usually lighter, to improve valve control at big revs, but i doubt with an rb30 you will need them.I would be going solid lifter setup well before getting aftermarket retainers.

Edited April 1, 2008 by Adriano