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What Turbo Is This?

soultz

By soultz,
in Engines & Forced Induction

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soultz Community Regular

soultz

Posted
Posted (edited)

My turbo on my r33 series 2 is blown, my turbo now looks like this

trubo.jpg

the turbo i bought to replace without knowing it was different is this one

20121003_205036.jpg

20121003_205005.jpg

20121003_205018.jpg

the turbo elbow for the compressor inlet (3 bolt) on MY CURRENT turbo is BIGGER then the elbow thats supposed to go on this turbo.

does anyone have a elbow for sale?

is the turbo i bought a series 1 or 2 turbo? why is it different to the one thats in my car at the moment?

cheers

Edited by soultz
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https://www.sau.com.au/forums/topic/410707-what-turbo-is-this/
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The Dan Grand Master

The Dan

Posted
Posted

Sounds like you bought an SR20 turbo?

Does it have a 5 bolt dump pipe or 6 bolt dump pipe?

Also what you referred to as the compressor inlet is actually the compressor outlet. It has 3 bolts and that's where the air comes out. The part where you can see the compressor blades is the inlet

Fornoyd20 Apprentice

Fornoyd20

Posted
Posted (edited)

My mate just replaced his blown rb20 and got another one,came with all the wiring,mani's and a turbo that looks just like yours mate so sorry but I'd say its a rb20 turbo :-(

I'm sure i will be corrected if its not tho :-)

Edited by Fornoyd20
discopotato03 Grand Master

discopotato03

Posted
Posted

It appears to be an RB20s turbocharger , the compressor wheel and housing is smaller than an RB25s ones and the turbine housing will be slightly smaller internally. The real give away is the "Nissan" etc cast into the 25s comp housing . Its in bolder lettering and also 25 turbochargers have an anti reversion groove machined into the compressor housings inlet boss .

The last thing as you found is that the adapter that bolts to the comp housings outlet is larger on the common RB25/VG30 comp housing casting . The threaded holes are also on a slightly larger pitch circle diameter than the RB20 type compressor housing .

You need to change it for an RB25 one .

A .

Lithium Grand Master

Lithium

Posted
Posted

For some reason I thought some VG30 turbos came with "16V 12" on the comp cover, could be wrong - long time since I worried about these units. Compare the turbine housings on the R33 turbo and the 16V turbo...

discopotato03 Grand Master

discopotato03

Posted
Posted

Single Z32 ceramic BB turbos used the same compressor housing as most RB25 ones though they were profile machined for a slightly smaller compressor wheel . They won't go over a std 25 compressor and I know because I have both and tried it . The housings side by side are dimensionally the same .

A .

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