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Hi all,

A mate is after some info on the stock rb20 turbo and is specifically after the compressor maps for it. So far I have been able to work out that its a Garret T25 but that is as far as I have got (and yes Ash I have done a search :huh: ).

Cheers

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https://www.sau.com.au/forums/topic/151232-stock-rb20-turbo-details/
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Here's a pic of relative sizes of the RB20 + RB25 compressors. Size measurements reasonably accurate too.

post-19642-1168509859.jpg

The impellers are possibly unique to Nissan/Hitachi as Garrett GT sizes are 54, 60 and 71mm.

Even if the impellers were the same, compressor maps involve measurements using specific housings.

cheers

Dale

I dont think anyone has ever had the comp maps... especially the RB20... being its really not worth anything

Lol :cool:

Thanks for all your replies. Judging from that pic it seems he may have an rb25 turbo (I haven't seen it so can't confirm).

If thats the stock compressor wheel off an rb20 can I assume that they were all steel wheeled?

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