Aftermarket Rb26dett Valves

[R32-GTS]

Just wondering if there are any head experts out there.

I gotta get some new valves for my rb26dett head. Has cams , porting etc etc but the head machinist has said the stock valves are 1/2 a thou worn and that i should replace them. I priced them from nissan. Over $1000.00 for 24. Might as well put some ferrea or manley valves or something like that. My question is the stock exhaust valves are sodium filled , by going to a stainless valve (manley, ferrea) would that be a problem. Also what size seems to work as i was going to go 1 mm oversize as im replacing the valves anyway.

Cheers.

[rb26s13]

naprec do oversize valves greenline has them and the valve guides to suit.. i think there 1.5mm oversize

[R32-GTS]

Yeh not interested in the naprec as i think 1.5mm is too big and you have to change a few other things to fit them.

[datsqik]

Supertech do good valves etc for the rb's.

http://www.supertechperformance.com/

I usually buy them thru portflow.

http://www.portflow.com/frame.htm

I would suggest also using some manganese/bronze guides.

They use the inconel exhaust valves to replace the sodium filled standard valves. There are arguments for and against both valves but the sodium filled valves pass a lot of heat thru the valve stems as opposed to the seat which can tend to flogg the guides out rather quick. The use black nitriding on the stainless inlet valves which resists gawling. They also use chrome silicone vanadium steel alloy springs which are really nice and a step above most other readily available springs.

[STATUS]

ferrea from rocket in sydney, used them in quite a few big hp cars with no dramas.

http://www.rocketindustries.com.au/search.php?brand=Ferrea

http://www.ferrea.com/productlines.php

[R32-GTS]

Cheers guys. Leaning towards the supertechs. Look like a good thing .

[BOOSTD]

Ferrea, in mine 1mm over

Thats what ADVAN use

Edited November 21, 2007 by BOOSTD

[[200]]

Call JT from Fabre

He should be able to help you out with the supertechs!

9758 1966

[R32-GTS]

cheers spoken to tj.