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Rb20 R32 Dilemma

Peanut92

By Peanut92,
in Engines & Forced Induction

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Peanut92 Collaborator

Peanut92

Posted
Posted

So I have the good old rb20det in my 32

And plans are I would like to stay 20 for the Revs and whenever I need to rebuild it then do so.

Well! I gave it a good rev today and she blew more smoke then Willy Nelson. Even small now all of a sudden even smaller revs it blows smoke (whitish Blueish) generally looks like oil pretty sure it smells like it to

Is it an internal seal or could the turbs be dead? I was going to buy an op6 and swap out incase it was the turbo blowing smoke.

But seems like a waste depending on the next question

I'm more of a rb20 fan because of its high revving I've owned 33s and I do like the torque of the 25 but that rb20 scream I love.

What would be my easiest option rebuild or replace my 20 or go the 25.

I'm pretty mechanically minded but i don't want to do extensive changes. The conversion seems pretty straight forward but no one gives you a straight answer

Some say 25 loom others say 20 loom.

Enlighten me? Thanks in advance

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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Do a compression test first.

Obviously the easiest route is to replace the RB20DET

25Neo is going to be more powerful and expensive and more work. If you Google you will probably find lots of people who have done it before to give you tips.

Roy Grand Master

Roy

Posted
Posted

LOL, so a turbo goes and people are suggesting an engine swap? Fault find to confirm the problem and if its a dead turbo...here is a radical idea....put a new, better turbo on it.

I reckon you should put a Barra 6cyl 4L turbo in it or a 6.2L Chev. Why waste your time with an RB25?

Peanut92 Collaborator

Peanut92

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Posted

It drives good but when it gets hot it plays up but its a sensor issue I'm sure. So I have a 02 coming aswell as a z32 and ect

There's not really any oil anywhere I can see

And may I add that i didn't believe it was rings or valve stems purely because you usually smell the burning oil

I never smell oil

Only fuel

And it's not really blue ish it's mainly whitish. Coolant was flushed a few weeks back and it hasn't lost a drop

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