how to identify what size turbo i have.

buickGN3:16 · Apr 23, 2017

Ok i just got my hands on a Turbonetics turbo with 2 diffrent waste gates & i am trying to figure out what size this thing is and which wastegate to use with it. i dont know how to post photos on here so im gonna post the numbers from the hot & cold side of the turbo to see if anyone can make sense of them. there is what appears to be T-09 on the oulet of the cold side & also 20210P/60-1 stamped on the backside of the coldside where it bolts to the hotside. then the hotside has 20240 stamped on it.

V6sleeper · Apr 23, 2017

What color is the back plate? hard to tell with out measuring the wheels. if its through cottons and the back plate is red its likely a cpt44 or a cpt60 which is a 60-1 comp wheel, and a turbine of 57 or 62mm.

buickGN3:16 · Apr 24, 2017

V6sleeper said:
What color is the back plate? hard to tell with out measuring the wheels. if its through cottons and the back plate is red its likely a cpt44 or a cpt60 which is a 60-1 comp wheel, and a turbine of 57 or 62mm.

it has a Blue back plate, the intercooler snout outlet is 2" & the side port that ties to the cold air pipe is 2 & 3/4". im not sure where it was originally purchased from.

buickGN3:16 · Apr 25, 2017

i talked to Turbonetics tech support as well but no help there, he wasnt very friendly either. he did say with it having a blue back plate that means its a older straight shaft type which they dont make anymore, that ddnt help me none tho..

V6sleeper · Apr 26, 2017

buickGN3:16 said:
i talked to Turbonetics tech support as well but no help there, he wasnt very friendly either. he did say with it having a blue back plate that means its a older straight shaft type which they dont make anymore, that ddnt help me none tho..

Yea not familiar with the blue, their usually red, gold or silver, if it works with your combo I wouldn't be too concerned you can always update to a turbo tailored to your combo and keep the old one as a spare.

buickGN3:16 · Apr 27, 2017

V6sleeper said:
Yea not familiar with the blue, their usually red, gold or silver, if it works with your combo I wouldn't be too concerned you can always update to a turbo tailored to your combo and keep the old one as a spare.

Turbonetics told me because it has a blue backplate that its an older straight shaft that they dont make anymore but without taking it apart & measuring the wheels i would not know what it is. i dont really want to do that tho. its supposedly a cheetah 4 but i think the ports are too small to be a 4 stage.

Steveb87Gn · May 17, 2017

You need to try to get a hold of Bison he's the turbo guru.

bpman1234 · May 17, 2017

X2 on bison.

how to identify what size turbo i have.

buickGN3:16

Active Member

V6sleeper

Turbo Buick's since 1988

buickGN3:16

Active Member

buickGN3:16

Active Member

V6sleeper

Turbo Buick's since 1988

buickGN3:16

Active Member

Steveb87Gn

New Member

bpman1234

Well-Known Member

Similar threads