Is there a stamp on it saying its a T25? It is stamped a M24, but I think thats the group, I am sure it is a T25 but is there someway of telling which one it is?

It will have .68 AR stamped into the turbo if its a T25.

Mine has A/R .80 on it, good or bad?

MINE ALSO HAS M24 WITH A/R .80 STAMPED ON IT BUT I WAS TOLD ITS STILL A T-25. I'D LIKE TO KNOW IF ITS NOT.

Nick's is a 1990 TGP....maybe the 89's had different writing on them? I'll check in a bit.

i am rebuilding mine right now. it is a 1990 and it says  A/R .80 M24   i ordered a kit from the g pop shop as recommended by others on this forum. i have the kit here and it says T2/T25 DYN/SEAL KIT. so it seems that a T2 and a T25 must be very similar.

Mine also has A/R .80 M24 on it, and I also had mine prefessionally rebuilt by GPop Shop. I dunno Nick, maybe yours is a different turbo? It was rebuilt wasn't it? If so, maybe it was just replaced?

I'm looking at the bill for my rebuild done at TEC Turbo Engineering Corp in Colarado, the TB25 cartridge #431876-5029 was $301, The core assembly (core chra) $100 and the turbine HSG T25 AR .68, part #430609-0123 $157.

Maybe some of these part numbers will be useful.

This was done by the previous owner.

   .68 AR is for the turbine side. .80 AR is for the compressor side

YES! Thank you, I KNEW that too! I'm not firing on all cylinders right now.

My turbo isn't the original turbo, it does look a bit different from the oem turbos.

Quote from: TGP Nick on January 11, 2008, 06:41:26 PM
My turbo isn't the original turbo, it does look a bit different from the oem turbos.

Got any pictures of it?

This is about the best picture I have of mine at the moment...


Pretty sure mine, like the others here, has "M24 and the .80 A/R" written on the compressor side.

My 89 is exactly like that.

WHILE TAKING MY TURBO OUT THE INSULATION WRAP FELL APART. DOES ANYONE KNOW WHERE TO GET ANOTHER
ONE? :fluffy:

As far as I was aware, that's it...once it's gone it's gone. I'd appreciate other people's input on the insulation as well.