Difference between RB25DET and Neo RB25DET

[BlockHead]

Whats is the difference between the r33 rb25det and the r33 neo rb25det? Is it harder to find parts for, or same parts.

[Bl4cK32]

$$$$$$$$$$

[BlockHead]

well I can get the Neo for about the same price from an import here in the US

[Bl4cK32]

Go for it. I believe its an engineered version of the std. rb25det. Someone correct me if i'm wrong.

[BlockHead]

do you have to get different aftermarket parts for it, or are they the same. I heard something about it had a different VVT system but I dont know exactly what they were talking about

[Bl4cK32]

not sure exactly, but I was after an r33 head. The guy at the wreckers told me a std head was AUD$750, compared to AUD$3000 for a Neo version.

[BlockHead]

holy cow, go with the standard in australia, hmm well I want to know more about the "Neo 6" RB25DET

[Steve]

The stock plenum on the neo apparantly has different injectors to previous RB25s. They are a skinny plastic injector, and the biggest about are 440 odd cc from HKS.

this is from a mag article (HPI) of a Neo buildup. But probably wouldnt be a hassel if you dont intend tuning very hard, or decide to get a different plenum?

[2rismo]

I thought i read that the neo is 9.0:1 comp too...

Adrian

[Sydneykid]

Some bits that I know, R34GTT RB25DET makes 206 kw standard, turbo is Hitachi copy of Garrett and looks the same as a late model R33, has a ceramic turbine and a plastic compressor wheel. (Still ball bearing hi flow easily for 230 rwkw). Have much more movement in the VVT than I have seen on R33's. Compression ratio is 9 to 1. ECU is much more sophisticated, upgrading to a Power FC is the go. Although I haven't measured them, the valves look to be the same size. Injectors are skinny plastic things, seem to flow around the same as R33 ones (370 cc's), so OK to around 230 rwkw.

Hope that helps

[DoughBoy]

Solid lifters. Nuff said.

[2rismo]

Sydneykid, by plastic do you mean nylon?

Just asking

[dAVE]

neo is just the latest version of the rb25det - came out in the r34's... definately grab that if its the same price.

[T0nyGTSt]

My turbo was DEFINITELY ball bearing, ceramic exhaust, nylon intake... pretty much yuck and needs the rebuild treatment.

T.

[Airzone]

R33's have steel compressor wheels, right? How high can you wind up the boost on one of these turbo's with nylon compressors?

[DoughBoy]

Originally posted by Airzone

R33's have steel compressor wheels, right? How high can you wind up the boost on one of these turbo's with nylon compressors?

Heh did you want a reliable figure? Disconnect the hose to the actuator and see if you don't.