A/R measuring on Turbo

[66Sprint6]

I got a to4b turbo a while back and used to remember the A/Rs and everything, but now I cant anymore. I got so busy with school and the car I forgot all about it. I was wondering how to measure the A/R and any other vital things needed to know about the turbo. Thanx guys!
Matt

 

[StrangeRanger]

A/R should be marked on the turbine housing.

 

[CobraSix]

If I'm reading your turbo right, we'll need more info. There are three trim levels to the T04B, there is the S3, V1/V2, and H-3. Do you know which one?

Slade

 

[66Sprint6]

Im not sure which one it is, it is a Borg Warner turbo and oither than that, I dont remember. It is at home right now so I will look at it tuesday if I can. I dont think the A/R is marked tho if I recall right, not sure. Ill check it out and let yall know!
Matt

 

[scottiedawg66]

my a/r is on the turbine housing side closest to compressor wheel.

~scotty

 

[Anonymous]

theres two A/R numbers..one ofr the turbine, and one for the compressor. I have a TO4B by AiResearch. The compressor A/R is on the inside oFthe outlet on the compressor. Some are on the side. The A/R on my turbine housing is on the edge of the inlet flange I believe. As far as the wheel Trims. iahvent a clue how to distinguish those yet. Havent found a place that tells ya.