Stay with Rb25 or go Rb25/30 R32

[Sh*t R32]

Hey Guys, 

So I've blown a headgasket in my rb25 r32 gtst. I've had a few problems with it with the MAF and some idle issues, but now the headgasket has died. 

I've been tossing up between just fixing the rb25 head gasket or leaving it for a little bit and building a rb25/30 on the side. If anyone has done it would you say its worth it and what power are you pushing and how much did it cost? 

What do I do??

Thanks 

[GTSBoy]

Engine height problems not a concern?

[Sh*t R32]

1 hour ago, GTSBoy said:

Engine height problems not a concern?

What do you mean? Like if I were to go RB25/30?

[GeeDog]

15 minutes ago, Sh*t R32 said:

What do you mean? Like if I were to go RB25/30?

He means that the RB30 block is taller than the RB25 block - around 30 - 35mm from memory. You need to lower the engine (by cutting or getting smaller engine mounts, allow it to sit closer to the bonnet (and probably remove the strut brace if you have one), or a combination of the 2.

We've done it with a track car, and it is fantastic. The extra ltorque low down is a real bonus. You haven't mentioned what's been done to your RB25, but you would probably need a tuneable ECU to get the most out of an RB25/30. Cost - how long is a piece of string. It will depend on what else you do at the same tiem - rebuild the RB30 bottom end, provide for better oil control, rebuild the head, modify the head to enable VCT, upgrade the ECU, upgrade the turbo, upgrade the fuel system. Pick a number that you want to spend & triple it.

[The Bogan]

Have a few spare gearboxes handy

Or get yours built 

The OEM box isn't a big fan of alot of torque

My 25/30 loved to eat the gears of the OEM box when on sticky tyres

[KiwiRS4T]

Yep go RB30 and, depending on your ambition, go as cheaply as possible. Just clean up the block and do rings and bearings get a decent turbo, intercooler, exhaust and ecu. new fuel pump and injectors. Keep the stock manifolds, throttle body fpr and cams. You will love the way it drives.

Unless you are made of money and want bling in which case the sky is the limit.