Whats The Difference Between R32-r33 Turbos?

[unarmed_skyline]

Hey, just wondering what the differences between the r32 and r33 turbos are, i just turboed my na and i had an r33 turbo on it and it had a fu*ed oil seal, the turbo spechilist said the best quility turbo he had was an r32 turbo and that there was no difference betweeen either of them and they have the same air ratios.

After this has been changed i've noticed the turbo defanatly spools quicker, and the actuator is set higher, i have to change the actuator but is there any other differences.

[R31Nismoid]

The turbo specialist...

Is 100% not a specialist if he is telling you that.

R33 turbos and R32 turbos are not the same, and the R32 turbo is older so i highly doubt its better quality.

The R32 turbo, for the sake of an easy answer, is smaller than an RB25 turbo.

1) Makes less power

2) Doesnt hold boost aswell due to its small size

Upside is it will be more responsive, but the RB25 turbo is the choice.

[unarmed_skyline]

i thought the r32 turbo was smaller that is what everyone was saying but i had the car at a reputable tuning place and they talked to and bought the turbo off a reputable turbo speciilist, oh well kinda got ripped a bit but oh well at 7 psi it wont really matter that much kinda better it spools earlier not that it needs it with the high comp

[R31Nismoid]

I doubt they were a reputable workshop if they couldnt even workout what the difference is between two different turbos that dont even look the same side by side

[unarmed_skyline]

well i would rather not say the name cause thats agiasnt the forum rules, but they have been reckomended a fair few times on this very sight, ohh well mabye i miss-understood something they said

[paulr33]

rb20 vs rb25

you can see the 25 is larger

[unarmed_skyline]

mm looks pretty damn obvious doesnt, i thought that it was smaller too, thats y i asked them the question twice, he said the turbo spech said it was the same spechs, mmm i got to go bak anyways ill ask agian mabye the r32 turbo was moddifyed intake chamber or something, ill look at the turbs on the car in the morn as well,

[32vspecII]

i wouldnt be going back apart from getting my money back

[Dale FZ1]

rb20 vs rb25

you can see the 25 is larger

I recognise those pics.

Running at the moderate boost levels that either can supply, I'd say it's less the case that the RB20 won't hold boost, than it won't push as much air at the same boost level.

ie. less power capability. The pics show how/why.

[Slide]

To assist people wanting answers using the search function.

For those that can only look at one turbo when wanting to know the differences the markings on the housing will reveal all.

The R32 turbo has 16v stamped on the compressor cover and is the only comprssor cover used on RB20 turbo's.

The R32 turbo most of the time has the smaller 16v or 04u stamped turbine housing. (some 1993 models have the RB25 21u turbine housing)

The R33 turbo has 45v1, 45v2, 45v3, 45v4 stamped on the compressor cover.

The R33 turbo has 21u stamped on the turbine housing.

The R33 turbo as stated above is larger.

[slor33]

hey guys i dnno if u can help me with this but i just brought a standard series 2 r33 turbo for my series 1 and the turbo's are different sizes, not by much but the bit that the intake piping bolts onto is bigger on the series 2, a mate keeps telling me the only difference should be a steel wheel as opposed to ceramic

[bubba]

The only difference should be a NYLON compressor wheel instead of steel, both should still have ceramic turbine wheels.

AFAIK they aren't physically larger?

[slor33]

ok so i pulled them off and put them side by side ans the new turbo has 45v1 and the old turbo has 16v11 on it... did i get ripped off from factory or something. and should the banjo bolts fit straight across

[QWK32]

45v1 is a stock 33 turbo, 16v11 is a stock 32 turbo. and if the 33 turbo has a steel comp wheel it is a series 1, if it has a Black Nylon comp wheel its a R33 series 2 turbo.