Turbo Know It All Please Read

[SRB]

ive spoken to one of my brothers mates at precisin turbo, in the usa, who sponsor his car and asked them for a reccommendation for my gtr, as i can get turbos from them pretty cheap and this is what i was given in reply to a msg stating what car i own, hp wanting to achieve and that i want something that matches the t04z...

"The closest thing we have in terms of size and performance to the T04Z is

the GT4067R... it's a ball bearing turbo (which means its water cooled) with

a GT40 turbine wheel and a 67mm compressor wheel. It's available wih a

.81a/r turbine housing and either the "S" (4" inlet, 2.4" outlet) or "H" (4"

inlet, 3" outlet) compessor cover."

also when one speaks of "trim" is that the number stated on the compressor cover? and what does that number actually mean?? how is it derived?

i understand the a/r ratio part and the compressor wheel size is 67mm. i dont understandthe 2 types of compressor covers, what affect will the larger outlet have on my engine performance wise??

how would this turbo actually match up to the t04z??

all this help is muchly appreciated.

thanks!!!

[maximajim]

Trim = (minor diameter / major diameter) ^2 * 100

http://www.turbominivan.com/tech/turbo201.htm

[discopotato03]

A search on TO4Zs may help you're knowing .

[SRB]

all my questions have been answered thanks guys