Guys,
I have 2 Garrett turbos that have no ID tags. How is the best way to tell what size they are. They have a.96 AR on the exhaust side and a.75 on the cold side. I think they are a T6 flange. They came off a series 60 Detroit. Thanks, Bob

take some pics? Get the housings off and measure the inducer and exducer sizes of the wheels.

I will post some pics tomorrow. Thanks

Sorry I took so long guys,been really busy. Anyway here is all the info I got off of them:
Inlet.
A/R .75 M-24 B.O. Garrett
Inlet I.D. 3" O.D. 5"
Exhaust.
A/R .96 M1 GT
Outlet I.D. 3.5" O.D. 5"
Flange bolt pattern is 4.437"x2.75" (T6 I think) I have two pics to post. If you can think of anything I missed let me know.
Thanks, Bob

Other pic.

Does the turbine inlet have any numbers stamped on the inside? .96, 1.23, 1.32, 1.6 would be common.

You'll really need to take the housings off to measure the wheels to know for sure what you have.

I will do that tonight. Thanks

Here is what I found. Inlet side impeller is 4.030"(102mm). The exhaust side is 3.700" (94mm).The intake side has A/R .75 cast into it. The exhaust side has A/R .96 cast into it and also is stamped .96 right inside the flange.

Try that again.

OK. On the intake side the inducer is 4.030" and the exducer is 3.030". The exhaust side inducer is 3.700" and the exducer is 3.438"
Thanks, Bob

Bad turbo you should sell it to me. LOL What are you trying to do? Very large for twins but as a single motor like mine it will work well. That is pretty much the exhaust side I need for my motor. If you want to part with one let me know.

Not bad at all, a 76mm turbo with an 87mm turbine and .96 housing. You're already on a 1.32 housing, right Curtis? What wheel do you have?

1.0 hsg and 83mm/75mm turbine.