I thought it was a 60-1, now I'm not sure. It has a A/R.81 exhaust housing and a A/R.60 intake.

 

You need to measure the wheels to find out -- many wheel sizes have the same A/R

 

Count the number of blades on the compressor wheel. If your top layer has 7 blades it is a 60-1 if it has 6 blades it is a GT67.

The 60-1 compressor housing has a .60 A/R and the turbine housing has a .81 A/R.

 

Well both of my turbos have 6 blades. The new GT 67 has a .96 exhaust housing, wich is the only big differents I can see. Now I'm really confused.

How to you masure the wheels, TurboBerserker? I need to remove the housings right?

 

To measure the wheels you will need to take the housings off of the CHRA. You can leave the backing plate attached to the CHRA.

My 60-1 has 7 blades. Maybe you have two GT67s. One with a .81 A/R and one with a .96 A/R turbine housing.

The measurements I have for the 60-1 I got from an online source so I cannot confirm their accuracy.

Turbine Wheel - .81 Ptrim ( 2.542/2.920) (64.57mm/74.17mm) (Exducer/Inducer)

Compressor Wheel - T60-1 (2.32/3.00) (58.93mm/76.20mm) (Inducer/Exducer)

The only measurements I have for a 67mm are for a Precision PT67 and I am not sure if they are the same as a GT 67 or not.

PT67
Turbine Wheel - .81 Ptrim ( 2.542/2.920) same as T60-1

Compressor Wheel - PT67 ( 2.620/3.310) (66.55mm/87.07) (Inducer/Exducer)
I believe this is for the 7 vane wheel and not the newer GT40 style 6 vane wheel but the dimensions may still be the same.

Good luck figuring out what you have. It still drives me nuts trying to figure out the specs for some of these turbo combinations.

 

I measured the wheels and came up with this 2.948" or 74.88mm on the compressor, and 2.894" or 73.32mm on the turbine wheel. my battery is almost dead in the pert-near calipers so it may be off just a hair. but I think it is close.

 

Take a look a this: http://www.forcedinductions.com/help.htm and scroll down to the 'What is the trim of a turbo and how is it calculated' part. It used to explain the front side formula as well, but I can't seem to find it on Jose's site anymore.

 

Go to that page that TurboBerserker mentioned. You need to get both measurements Dp and Dg. On the compressor wheel of a GT67 the Dp should be close to 67mm or 2.64". The PT67 I mentioned has a Dp of 2.62" or 66.55mm. The T60 should have a Dp close to 60mm or 2.36". The spec I found for the 60-1 has a Dp of 2.32" or 58.94mm. So they are close to but not exactly the spec of the turbo.

 

Dg is 2.948
Dp is 2.286 on the compressor wheel

Dg is 2.894
Dp is 2.51 on the turbine wheel, I'm still not sure which one it is.

 

It looks to me like you have the T60-1.

T60-1 Comp A/R .60; Turbine A/R .81 Ptrim.

Your measurements are close enough to the specs I gave above. If your compressor wheel only has 6 blades then maybe it has been upgraded to a GT wheel. That is good because the GT wheels are supposed to be a lot more efficient.

Who did you get the turbo from? If it is a STS turbo then give Dave South a call and he will sort out the confusion for you.

Let us know because I would like to know myself.