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R33 Rb30 Conversion

JNR24

By JNR24,
in Engines & Forced Induction

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Al Grand Master

Al

Posted
Posted
from memory it depends which power steering pump you are using, and if the belts line up correctly. Assuming the alternator/water pump belts are the same.

but for the price of the ross units why not just get one of them?

Agreed!

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Duncan
Duncan

Just thought I would bump this 20 year old thread because the Skid Factory have just posted up a video summarising a lot of the content, format might be more familiar for newer members

JNR24
JNR24

fyi guys, Well yesturday i picked up a RB30 for my conversion into my R33. I will be using my RB25DET head on the RB30 block. So i started stripping the motor down, pulled the crank, pistons, girdle

Cubes
Cubes

Here is all I have at the moment: http://www.geocities.com/r32_jjc/ Unless you are on broad band make sure you right click then save as. The file is around 120kb. If there is anything I have got w

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Gts-t Grand Master

Gts-t

Posted
Posted (edited)

its a standard rebuild that im doing so i dont need the ross

I was going to use my r32 one but for the price i might as well get a new one. I remember sk posting that he uses mostly rb26, i think ill have to do some old fashioned belt checking and see if i can do the same. Otherwise im sure the rb20 one will be fine

Actually cubes will know, where are you old mate?

Edited by Gts30t
  • 3 weeks later...
Redliner007 Enthusiast

Redliner007

Posted
Posted

hey all,

slightly off topic but im in n.z and i have a spare r32 non vct rb25de head that im thinking about selling, just wondering how much should i sell it for?

i have had it vacuum tested,crack/pressure tested and have had the valves all checked and have had it dipped to clean it all up. Only thing wrong is the exhaust valve guides have a tiny bit of play in it. The head is disassembled also but everything is there to put it back together i.e springs,valves,camshaft,gears etc.

I also have a r33 vct head that im thinking about selling what sort of price could i get for that? would it differ compared to the r32 as the r32 head are harder to find?

Cubes Grand Master

Cubes

Posted
Posted

They both (with manifolds) go for around 1k these days.

The R32 rb25de heads can sometimes fetch a little more due to the no fuss bolt on and go.

The r32 rb25de has 'slightly' smaller but rounder ports compared to the rb25det vct head. Regardless they don't appear to give anything away in the power making vs boost side of things.

Only real issue is both heads are hydraulic of which limits total power output (400rwkw max) on pump fuel due to the inability to run cams with decent lift 10-11mm.

Redliner007 Enthusiast

Redliner007

Posted
Posted

i only have manifolds for one of them which im using for myself. how much do you think i could get just for the single head which is unassembled? A guy has offered me 450 in bits for the r32 head?

Cubes Grand Master

Cubes

Posted
Posted

Correct but the tomei solder lifter kit requires a cam with a smaller base circle. So extension shimming would be required.

There is a mob I have the number for that apparently converts the hydraulic lifters to solids. Have yet to contact him to find out the details cost etc.

I'd personally machine the heads buckets, grab the tomei solid lifter kit, suitable springs, reco the head and then have Tighe cams grind up a set of billets with 11mm lift or so.

raZ1911 Proficient

raZ1911

Posted
Posted

Yeah the only reason i ask is because its a good upgrade for a RB20 i heard and i have a RB20 atm and having the 30 being build (well getting parts together) and just thought i could put them in my RB20 for a upgrade while i wait for the 30 then put them into the 30.

But if i have to machine the 20 head then the 25DE head then theres not that much point as i dont want to do much to the 20.

bubba Grand Master

bubba

Posted
Posted

lol bad boy bubba.. I love cats.. I wouldn't wrap one in gladwrap :kiss:

I looked into solid lifter conversion with some big cams and it came to about $2500 in just parts, then gotta add machining and downtime to that!

I'll stick with my stock NA cams for now..

shanef Grand Master

shanef

Posted
Posted
lol bad boy bubba.. I love cats.. I wouldn't wrap one in gladwrap :kiss:

I looked into solid lifter conversion with some big cams and it came to about $2500 in just parts, then gotta add machining and downtime to that!

I'll stick with my stock NA cams for now..

JHH Engineering in qld does the solid lifter conversion for roughly $450, then add $1250 for cams & gears.

I just picked up a big head from them for a friends car im building (26/30 in a 33gtr), labour on the head was $3130 ($6k head in total)

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