O trim? P trim? Q trim? what? - Boost Forum

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O trim? P trim? Q trim? what?
Friday, June 24, 2005 6:21 PM
Can anybody decode the jargon for me? what are the differences?


________________________________________________________
-Josh
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Re: O trim? P trim? Q trim? what?
Friday, June 24, 2005 9:42 PM
O, P, and Q trim's are the exhaust trim's for a T4 turbo. Every turbo manufacturer has a different way of indicating the size of the wheel.

Trim Exducer Dia Major Dia
N 2.071" 2.922"
O 2.296" 2.922"
P 2.544" 2.922"
Q 2.693" 3.111"

I wouldn't use a T4 exhaust housing/wheel on any 4 cylinder and definately not one that's intended for street use. the T4 exhaust housings/wheels are quite large and will result in excessive spool time.



Curtis
91' Turbo Z24
http://www.turboz24.com
Re: O trim? P trim? Q trim? what?
Saturday, June 25, 2005 12:56 AM
Oh, but your little V6 is plenty good enough for one jk

Well, it's not really intended for street use, but I was planning on going with a .82 T3 housing anyway...just curious about the T4 specs is all, so thanks for the info.
Now what about the stage 1, 2, 3,.. wheels? same deal?


________________________________________________________
-Josh
<img src=>
Re: O trim? P trim? Q trim? what?
Saturday, June 25, 2005 9:58 AM
Quote:

Now what about the stage 1, 2, 3,.. wheels? same deal?


Basicly yes..i thought different companys for turbo manufactors listed it differently like that P trim etc; and stage 1, 2 etc;

anyways ...higher the number the bigger diameter of the turbine wheel. and you do need the same size stage housing to accomidate for the wheel also.
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