Can anybody decode the jargon for me? what are the differences?
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-Josh
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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
 
 
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=>
 
 
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.