Is standard RB20 turbo crap?

[JH32]

I'm just wondering, is the turbo that the RB20DET comes with a pretty crap one?

What I mean is, mine seems to run out of puff pretty early on

Is this normal?

[MrMayhem]

pretty much

your dropping to 10psi odd in 2nd @ 6k then 3rd gear around 4500k it start to creep down?

they arent designed to flow more air to sustain much more than 8psi on a 2L

[hawks]

mine peaks at 14psi to make 143kw at the wheels

good turbo for a 4cyl i reckon

[macka]

Originally posted by BROKEN

mine peaks at 14psi to make 143kw at the wheels

good turbo for a 4cyl i reckon

Nah Lil SR20s and CA18s come with the same T25

RBs need something bigger even my CA18 Has a T3 on it now..

Even a T3 on your RB JimiH isnt the BEST alternative...

But your right they are known for generally running out of puff up high!

[TTT]

ummm..

the turbo on the RB20DET IS a T3 of some sort.

It's internals are more similar to a T28 but the bolt pattern of the turbo is a T3.

[macka]

Originally posted by GTST

ummm..

the turbo on the RB20DET IS a T3 of some sort.

It's internals are more similar to a T28 but the bolt pattern of the turbo is a T3.

Do some research first and come back and edit your post

[TTT]

Do some research first and come back and edit your post

Oh.. Please enlighten me.. point me in to the direction of where it says different..

[macka]

Dont be like that champ.....

I dont need to read anything to say that they are totally different.

Firstly the size of the compressor cases and exhaust cases are smaller on a T25 and support smaller turbine and comp wheels!

The inlet and outlet of comp housings are much different!

Turbine dump is different........everything is different!

Your probably thinking about where the turbine fits on to the Ex manifold (Bolt Pattern) 4 bolts in a rectangular fashion...These are the same.....And they call it a T3 Pattern.

As for comparing a T28(R33) to T3(Z32) Ive measured the comp wheel and housing to be slightly better on the T28

But the Exhaust side of the T3 is bigger and so is the wheel actually a fair bit so this will give heaps of top end so i think it would be ok for an upgrade on an R32 but not much point on the 33 plus u will be modifying a fair bit to get average gains

[JH32]

That's cool then I'll just wait till the standard turbo comes off and embrace the lil upgrade to the vg30 hehehe

which hopefully should be very soon!

[macka]

Originally posted by JiMiH

That's cool then I'll just wait till the standard turbo comes off and embrace the lil upgrade to the vg30 hehehe

which hopefully should be very soon!

Adam32 will be howling if u beat him wid that thing if its in before he gets back

[JH32]

heheheh yeh I know :bahaha:

mind you ... when his car is sorted out ..... goodbye jimi

the turbo + cooler will definitely be in before the end of january ... i'm hoping maybe the first or second week of january will be fitment week

[kabab]

i wouldn't bother with a vg30 they are a 8 year old design as well try getting a R33 gtst turbo or a S15 turbo, much better options less lag more power !!

[macka]

Originally posted by kabab

i wouldn't bother with a vg30 they are a 8 year old design as well try getting a R33 gtst turbo or a S15 turbo, much better options less lag more power !!

You cant boost them up

My r33 doesnt have a problem with the 10 yr old design T3/T4 the guys will confim that