R32 Gts4 Engine Options

[tigermm]

Ok, my RB20 has stuffed a big end bearing, so Im going to need to do something about it soonish. The problem is I have a pretty tight budget.

My options the way i see it are

A) Rebuild a lower K RB20 and swap it for mine.

B) Get a stock 4WD RB25DE, stick my R34 turbo on it and remap my R32 ecu to run it.

Im thinking I could probably rebuild the RB20 for around a 1k including buying an engine, but after reading 666DAN's posts I really like the RB25 idea.

Can anyone give me a ballpark figure on buying the RB25? (has to be the 4wd one remember).

What injectors do the NA RB25's have?

Would I be able to get it back up to my current 200rwkw?

Any help appreciated

[Beer Baron]

cant you just buy any RB25DET and bolt your gearbox up to it? what are the differences between the 4WD and RWD engines?

[tigermm]

The 4wd engine sump is wider, so an adaptor plate is needed, which costs more money. Thats an option tho if i cant find a 4wd one.

Cant afford to buy an RB25DET anyway, hence the turbo'd NA option.

[Josh]

Not too sure but wouldn't you need to upgrade the valve springs in the NA head to cope with boost?? I can't remember if they were up to the task or not..

[funkymonkey]

Ok, my RB20 has stuffed a big end bearing, so Im going to need to do something about it soonish. The problem is I have a pretty tight budget.

My options the way i see it are

A) Rebuild a lower K RB20 and swap it for mine.

Any help appreciated

Depending on how long you are prepared to wait and how much you want to pay, I'll have a healthey GTS4 AWD RB20DET motor coming out of my car soonish. It'd save you money with being a bolt in, and not have to fark around making sure everything works.

[TTT]

na rb25 from an R32 has the same injectors as rb20det

about turboing it?

I don't know..

I'd go another rb20 or have a look at my HYBRID RB thread in this section where someone posted a link to building an RB24 and 22 and so forth.

however, if you really want an upgrade, you need the money.. then go rb30det or rb26dett

[Interloper]

Dr_Drift is just finishing tuning an RB25DE with KKR turbo and r32 ecu, makes good power with the N/a higher compression.

Give him a pm to know more.

[Interloper]

Its actually a T70 turbo - heres what he said:

I'll be finishing the Cefiro with the RB25DE + T70 later today so I'll scan that when we're done.

Last reading was 249 rwkw @ 17 psi

Completely STOCK RB25DE with a T70 600hp, 600x300x100 FMIC, GTR Injectors, Z32 AFM, Desno 600 hp Fuel Pump, Remapped R32 GTST ECU, and that's it.

[TTT]

how cool is that..

anyone know what comp ratio the stock rb25de is?

[Interloper]

is it 10:1?

[MADGT4]

Depending on how long you are prepared to wait and how much you want to pay, I'll have a healthey GTS4 AWD RB20DET motor coming out of my car soonish. It'd save you money with being a bolt in, and not have to fark around making sure everything works.

Yeah i have a problem with my RB20 as well and may need a new engine.

How much?

I've never had anyone be able to give me a straight answer on what is wrong with my car. I think its cursed :

Edited March 4, 2006 by MADGT4

[tigermm]

Woah thats awesome!

Think Im gonna look into the RB25 more deeply now. I really think i might as well get some more mumbo while the engine is out.

Anyone know an approximate price for a NA 4WD RB25?