How rebuildable (is that even a word?) are the stock turbos?

[mello88]

I believe Series 2 RB25DET used the "Plastic" compressor wheel

[uber95]

Dunno, i bought it from someone on here.Longggg time ago.

It's some kind of strong plastic, because I wasn't sure at first but then I saw the flashing that was left behind.

You know when you get something plastic and it has a little piece that's not suppose to be there. (can't explain too well)

I'll take some pics eventually.

HAHAHAsome guy quoted me $900 to replace the center section with a new Garrett BB one. LOL

Is the turbine wheel Grey/Blueish in color?

[Sil240]

I would say it looks Black.

But dunno cause it was spitting out oil.

[uber95]

If you clean it off with brake cleaner or some other heavy solvent and the wheel appears grey/blueish in color that it will be made of ceramic.

[Darius]

The exhaust wheel is ceramic, not the compressor wheel. And I'm 99% sure the compressor wheel is steel.

[uber95]

Is the turbine wheel Grey/Blueish in color?

I wasn't referring to the compressor wheel, those are cast aluminum.

[Bronze MFP]

i've heard some of the rb25 compressor wheels are plastic.

in response to nismopwr240's post, how would bad compression leave oil in my intake trac? other than finding oil there, my engine runs flawlessly. hell even with all the oil pooled everywhere it ran fine. im thinking all the oil came from the cam covers at this point. I have long stretches of very low traffic highway near me that I like to blast down. So long periods of high rpm coupled with the fact that rb20's don't drain oil well out of the cam area at high rpms... maybe thats the culprit? I dunno. I'm getting all veclempt, discuss amongst yourselves.

[DriftingisLame]

Bad compression could mean you have a loose oil clearance (or looser than factory), between the cylinder walls and the pistons/rings, allowing exhaust gasses from the power stroke to "blow by" the seal of the piston rings against the walls. The PCV is a crank case ventilator to remove these exhaust gasses out of the crank case, in order to prevent the oil from blending with exhaust gas, it causes a bubbly frothy sort of oil lol, which obviously suxors.

If anyone has anything to add to this, please do.

Look up sliding performance's posts on Skylinesaustralia.com. I believe their rebuilt rb20 "highflow" turbos are around $8-900.