R33 Rb30 Conversion

[Fitzpatrick Speed Works]

they will handle 300awkw, but it (like GTR boxes) depends on the prior condition and how it is treated once you have this power. They are n't quite as strong as the gtr box as the the input shaft isnt quite as beefy.

[FORZA-MOTORSPORT]

For some reason my gts4 had a gtr geabox in it?

[Fitzpatrick Speed Works]

Freebie, got to be happy with that. the gts4 box was probably distroyed or replaced at some point, I doubt it would have been done in the factory, they do look almost identicle though!

[[200]]

What do you want to know about them?

Ok, on their website;

Here

theyhave different sizes, materials (steel or aluminium), outer diametre ect ect...

To chase a high horsepower application (1,000) which one would best be suited.

Would a larger outer diametre with 3 ring setup help reduce harmonics as there is more weight to counteract?

I can get them for about $950.

[FORZA-MOTORSPORT]

My Gts4 came with, hks turbo, power fc, aftermarket fuel pump, 3" kakimoto exhaust, hks plugs, hks filter and 4 balled tyres so i guess it was setup for thrash , perhaps thats why it has a gtr box! Clutch was Gtr when i took it out too , do the gts4's have an lsd, when i do a sharp turn at about 5kph up a hill sounds like i have a locked diff, sounds like one of the rear wheels is moving faster then the other???

Edited June 14, 2006 by FOOLBOOST

[Fitzpatrick Speed Works]

I am under the impression they have a 2 way mech diff the same as used in the GTR

[FORZA-MOTORSPORT]

yes that sounds about right, hope it wont have problems with the extra torque, out of the following considering lets say 320rwkw with the rb25/30 with 1050kg gtr clutch i have in there what is most likely to go first.

1. Gearbox

2. Cv's

3. Drive Shaft

4. Diff

[Fitzpatrick Speed Works]

Not the cv's, drive shafts or diff as they are the same as GTR's and very rarely do you have problems with them. Even at that power, you will have to be a nice guy to your gearbox, depedning on its condition and the life its led, always be gentle on 3rd once you have over 300rwkw!!!

[FORZA-MOTORSPORT]

Ok that sounds good then , so 3rd usually goes, think my second syncro is a bit worn, or maybe its just the short shifter seems a bit harder to find, especially when i am launching then slamming into second.

[sky30]

Daniel,

Do you know the size difference of the input shafts, and were to measure?

[[200]]

A quick question re injectors

I have nismo 740cc injectors in my s15 greedy plenum.

Would these also suit the GTR head? (R32 or 33)

[crack]

i found another RB30 conversion thread on gtr register.

good to see the popularity of the conversion.

of particular note is post number 3 & 47 bagging the "aussie" supplied sump adapter plate. i hope it is not someone from here.

here

[Cubes]

No its no one from here, its not really bagging just stating he'd like to know who supplied him the adaptor plate, I'm assuming the problem is the same as what I've heard, holes didn't line up perfectly, and it must be perfect when dealing with countersunk bolts.

RIPS did the first 4wd rb30det that I know of over in NZ, he's been around for a long time playing with these things.

He was the one to tell me the std rb30 oil restrictors are borderline but ok.

[mr_rbman]

' date='17 Jun 2006, 05:02 PM' post='2264503']

A quick question re injectors

I have nismo 740cc injectors in my s15 greedy plenum.

Would these also suit the GTR head? (R32 or 33)

pretty sure s15's are side feed, rb26's are top feed!

[NosDan]

pretty sure s15's are side feed, rb26's are top feed!

unless for some funny reason greedy changed there stuff to suit top feed as well as ive seen some aftermarket setups.

but yes generally SR, r33 RB25 = side feeds, RB20,26 = top feeds.

tho if you can get 6x side feed s15 inj's they flow more fuel than the stock r33 items.

[Sydneykid]

tho if you can get 6x side feed s15 inj's they flow more fuel than the stock r33 items.

Not Autos and not Australian delivered S15's, only the JDM manual has higher than 370 cc's

cheers

[[200]]

Thanks for the assistance.

Looks like I will just sell the nismo ones and buy new ones at a later date.

[Sydneykid]

RIPS did the first 4wd rb30det that I know of over in NZ

Hello .................... over here ............... RB30DET in R32GTR, started in 1999 finished in 2000

Shall I show you the first post on SDU, where I told RIPs the principles?

He can probably lay claim to the first R32GTS4 with RB30, no argument there.

In 1995 we also did a very early (not the first, but close to it) RB30 "D" ET, using an RB20DET cylinder head.

I need to check the exact numbers but I think we are up to ~10 X RB30's with 4wd.

The quality of the supplied adaptor plates (the race team fabricator doesn't have time to make them any more) has been steadily improving with our input. So what was a minor irritation 12 months ago, no longer exists.

cheers

[Cubes]

Hello .................... over here ............... RB30DET in R32GTR, started in 1999 finished in 2000

Shall I show you the first post on SDU, where I told RIPs the principles?

He can probably lay claim to the first R32GTS4 with RB30, no argument there.

In 1995 we also did a very early (not the first, but close to it) RB30 "D" ET, using an RB20DET cylinder head.

I need to check the exact numbers but I think we are up to ~10 X RB30's with 4wd.

The quality of the supplied adaptor plates (the race team fabricator doesn't have time to make them any more) has been steadily improving with our input. So what was a minor irritation 12 months ago, no longer exists.

cheers

heheh opps.

I now know differently.

[Scooby]

Guys;

Just wondering how RB30s are treating hard driven (not abused) GTR and RB25 gboxes. I did a search on 'gearbox' here and got some threads from 2003 but that was it; found references to 320 rwkw being well wthin the capacity of the RB25 box, and the GTR box running happily with 650 hp (fly I assume) but not much on torque capability.

I'd hate to have to detune an RB30 so that the gearbox will live and I don't want to shell $5k for a gearset.

Cheers