I have a turbo netics exhaust housing. I am trying to determine the A/R of it.
It has two part numbers cast on it. Both are on oppiste sides of the turbo flange. One is in larger numbers then the other.

The larger # is 20357 .48
The small # is 20358 .63

I am not sure why there are 2 different #'s.
Also there is not a .48 or .63 engraved on the inside.

Here are a few pics

 

Take a picture of the entire housing from the outlet side, that'll help to guess which stage wheel it has also.

The fact that it has 2 unique id numbers on it though... is wierd. Give Turbonetics a call when they open up.

(I suspect its the 20357, but have nothing to back this up... just a hunch )

 

I think....

There are two versions of the 20357 and a few of the 20358.

20357-02 = .48a/r stg2 whl
20357-03 = .48a/r stg3 whl

20358-72 = .63a/r std trim
20358-02 = .63a/r stg2 whl
20358-03 = .63a/r stg3 whl


To me it looks to be a .63a/r turbine housing..

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B00STFREAK &raquo;</TD></TR><TR><TD CLASS="quote"> I think....

There are two versions of the 20357 and a few of the 20358.

20357-02 = .48a/r stg2 whl
20357-03 = .48a/r stg3 whl

20358-72 = .63a/r std trim
20358-02 = .63a/r stg2 whl
20358-03 = .63a/r stg3 whl


To me it looks to be a .63a/r turbine housing..</TD></TR></TABLE>

.48
Stage I Standard 20357-1
Stage II Standard 20357-2
Stage III Standard 20357-3
Stage V Standard 20357-5

.63
Stage I Standard 20358-1
Stage II Standard 20358-2
Stage III Standard 20358-3
Stage V Standard 20358-5

Is off the Turbonetics site.

 

That isn't the stage 5, I actually just sold one and it would have less material around the flange area. So I can help narrow it down some at least.

 

any idea why there is 2 different numbers on this thing..very weird. I emailed turbonetics never heard back from them yet though

 

it definately is a turbonetics housing. check the inside of the inlet of the housing for a number. there should be stamping on it. might be covered with a whole bunch of carbon.

EDIT: if you have a set of calipers, measure the space it has for the turbine and it will give you an idea of what stage it might be.

 

I don't have a set of calipers.

 

a local machine shop will have some.

 

Yea still wont tell me whats the a/r though

 

Clean the inlet side of the housing and look for the stamped AR #.

 

I did and nothing there

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostdummy &raquo;</TD></TR><TR><TD CLASS="quote">I did and nothing there </TD></TR></TABLE>

Possibly ported then. I'd give turbonetics a call during the day, and ask.

 

Anybody else have any idea's?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostdummy &raquo;</TD></TR><TR><TD CLASS="quote">Anybody else have any idea's?</TD></TR></TABLE>

Once again... call them Get an email from them and send the pics... they are your best bet at this point.

 

I called them and they don't know the a/r o fit either

Apparently its an "old" housing and they don't have the a/r on file anymore for any housings with 2 different part numbers on them

 

Looks like a .63, just looking at the shape of the scroll.