Difference Between V1 And V3 Turbos

[wraith_skyline]

Hey guys, i just spat my turbo on the 33 and in a mad panic picked up a rebuilt one, the original had 45V3 on the compressor housing and the new one had 45V1, and had the compressor fins in pairs. Does anyone know if there are any other differences between the 2, coz the new one goes heaps harder

[FATAZZ]

im interested too, mine says 45V2 and the compressor wheel is in pairs.

[The Dan]

The twin blade comp wheel is designed for much greater flow and response.

[RB30-POWER]

Why did they change to the lighter nylon type wheel on the S2 and R34 turbo's then?

Not having a dig at all, just curious?

[Dale FZ1]

Why did they change to the lighter nylon type wheel on the S2 and R34 turbo's then?

Not having a dig at all, just curious?

<{POST_SNAPBACK}>

Two factors have a major impact on the rate of acceleration of an impeller:

radius

mass

Increase either of them, and the ability to build boost quickly is diminished.

Note that Blade numbers, shape, inducer size also impact on compressor performance.

cheers

Dale

[wraith_skyline]

by the way, when i pulled the stock turbo off it was a steel impeller, but it is a series 2, maybe someone changed it and didnt tell me

[RB30-POWER]

easy way to tell, because they both feel like steel.

is S2 is black and S1 is silver, due to the different materials.

[wraith_skyline]

yeah, definitely steel, looks like it is an odd one or its been changed before

[bumble_bee]

thats the same as mine..

ive got a '96 r33 series2..

i can took a photo of my compressor side..

i got a silver steel wheel..

single blades/fins wheel..

and it says 45V3

so wat the deal?

can someone please explain??

i read that 45V1 & 45V2 is on series 1 R33

and that 45V3 & 45V4 are on series 2 R33

am i rit so far????????????????

then i was lead to believe that...

series 1 have a alloy single blade/fin wheel (is it alloy?or was it steel?????????????)

&

series 2 have a nylon twin blade/fin wheel

is this correct??

[JET-25L]

As far as im aware the "v1" "v2" "v3" means absolutely nothing except the casting number. It has no difference between the numbers. My series 2 had a 45v1 on it and i can guarantee it came like that from factory. I now have a highflowed rb25 turbo and it came with 45v3 on the housing. Means nothing.

Are you sure you're not mistaking it for the black nylon series 2 wheel as it does sorta look like a metal wheel... Unless your turbo has been highflowed otherwise there would be no reason to change that wheel. It's the turbine side that spits anyway there would be no reason for the front to let go before the back.

And the series 2's still have a single blade from memory...

[R31Nismoid]

For all intents and purposes R33 S1 and R33 S2 turbos are virtually the same.

While the turbo makeup is actually different there is minimally noticeable difference in performance between them

R34 has a slightly larger rear on it (better for hi-flowing) and does make on average 10rwkw more @ 12psi than R33 items due to this

[jeffworld2]

please can everyone take into account that he has a gtr?

[R31Nismoid]

well he says the new one goes harder

now, having twin turbos would mean its impossible to tell one turbo 'goes harder' in my book

[JET-25L]

ah yeah i don't know anything about gtr turbo's but i would daresay they dont have the 45v"x" and would have something completely different as they're smaller turbo's and there's two of them. Sounds to me like he's talking about a gtst. Please advise.

[wraith_skyline]

This is a very old post, was on my GTST, not my GTR