Head upgrade - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Dan R32GTR · 1st October 2008, 08:10 PM

Any good strong upgrades for a R32 GTR head, thinking about doing a complete rebuild for the hell of it. Well, then I know its all strong and I know whats what so to speak.

Anyway, thinking about an RB30 head, but its about 30mm taller isnt it?

banzai g · 1st October 2008, 08:13 PM

RB30 head ????

Correct me if im wrong is it not the Rb30 block thats taller !!!???

G40tee · 1st October 2008, 08:15 PM

thought alot of people put rb30 blocks with 26 heads on them?
or am i making that up?

Dan R32GTR · 1st October 2008, 08:15 PM

PMSL, well, i guess, oops would make sense being a larger cylinder.... I will get my coat...

Dan R32GTR · 1st October 2008, 08:17 PM

Just thinking about an upgrade, is the RB26 head good enough then?

Jags · 1st October 2008, 08:59 PM

It's better. I think the RB30 head is a single cam and doesnt flow anywhere near as good as the RB26 head.

I could be talking out of my ar5e though- I'm no mechanic.

GT-R Glenn · 1st October 2008, 10:55 PM

Rb30 is sohc
RB25 or 26 head is used on RB30 bottom end by some.
Usually because its very easy to find bolt on go fast bits for that head.

Theres also plenty of 800hp sohc RB30's in Oz

New valve springs and guides in your RB26 head and oversize valves and then port it if you want the ultimate.

The standard untouched head will make in excess of 700hp with springs.

frostmotorsport · 2nd October 2008, 02:53 AM

welcome back Glenn!! the forum is a better place for having you!

1st October 2008, 08:10 PM	#1 (permalink)
Dan R32GTR GTR Register Member Join Date: Jan 2008 Location: The South Posts: 31	Head upgrade Any good strong upgrades for a R32 GTR head, thinking about doing a complete rebuild for the hell of it. Well, then I know its all strong and I know whats what so to speak. Anyway, thinking about an RB30 head, but its about 30mm taller isnt it?

1st October 2008, 08:15 PM	#3 (permalink)
G40tee GTROC Member Join Date: Feb 2008 Location: Bucks Posts: 819	thought alot of people put rb30 blocks with 26 heads on them? or am i making that up? __________________ Back to the good old days! :-p Christmas present for me maybe??

1st October 2008, 10:55 PM	#7 (permalink)
GT-R Glenn GTR Register Member Join Date: Nov 2002 Location: Waiuku NZ Posts: 1,170	Rb30 is sohc RB25 or 26 head is used on RB30 bottom end by some. Usually because its very easy to find bolt on go fast bits for that head. Theres also plenty of 800hp sohc RB30's in Oz New valve springs and guides in your RB26 head and oversize valves and then port it if you want the ultimate. The standard untouched head will make in excess of 700hp with springs. Last edited by GT-R Glenn; 1st October 2008 at 10:59 PM.

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1st October 2008, 08:13 PM	#2 (permalink)
banzai g GTR Register Member Join Date: Jan 2007 Location: bushmills northern ireland Posts: 412	RB30 head ???? Correct me if im wrong is it not the Rb30 block thats taller !!!???

1st October 2008, 08:15 PM	#4 (permalink)
Dan R32GTR GTR Register Member Join Date: Jan 2008 Location: The South Posts: 31	PMSL, well, i guess, oops would make sense being a larger cylinder.... I will get my coat...

1st October 2008, 08:17 PM	#5 (permalink)
Dan R32GTR GTR Register Member Join Date: Jan 2008 Location: The South Posts: 31	Just thinking about an upgrade, is the RB26 head good enough then?

1st October 2008, 08:59 PM	#6 (permalink)
Jags GTR Register Member Join Date: May 2007 Posts: 477	It's better. I think the RB30 head is a single cam and doesnt flow anywhere near as good as the RB26 head. I could be talking out of my ar5e though- I'm no mechanic.

2nd October 2008, 02:53 AM	#8 (permalink)
frostmotorsport GTR Register Member Join Date: Aug 2007 Location: Wellington, NZ Posts: 743	welcome back Glenn!! the forum is a better place for having you!