sweet spot for these 2 turbo's

[WINDMILL]

i need to know what would be the sweet spot for my precision 68-h housing turbo and this 72 gtq, both have 63 housing in them.. and where does each one starts to work well at lower boost... what it is i'm running a reg street tire(NOT A DRAG RADIAL) any help/ thanks

 

[bison]

For a GTQ on a <250ci v6 25+psi and 5500+rpm. 25psi would be low boost.

 

[WINDMILL]

so i guess the 72gtq would be out of the question then since i DONT have a 250 inch motor and dont run more than 24# of boost.. so prob the 68 would work better..

 

[bison]

so i guess the 72gtq would be out of the question then since i DONT have a 250 inch motor and dont run more than 24# of boost.. so prob the 68 would work better..

If its a GTQ its still needs to be run harder than 24psi

 

[jasjamz]

I think the way bison posted it it means for less than 250ci. It needs to be at 25 psi or more and over 5500RPM to wake it up.

 

[WINDMILL]

well anyone dont have anything to say about the 68-h

 

[jasjamz]

You're like the only guy I know of that has it LOL. I'm sure there are more, try a search and throw out a few pm's.

 

[WINDMILL]

well what i'm trying to do is leave soft (2#) and not blow the tires off..i'm trying to find what the diff is between the 2 turbos... in the flow curve... i just ran a 1.68 60ft 7.15 1/8 mile on reg radials. i'm need to get the thing to run an averge of 6.6's to 6.8's.. i might be wishing in 1 and and doing something in another, but i think its doable.... fastest i've been is 1.62 60fts and 7.08 before with old motor.

guys thanks for the info tho... anyways here's my car on reg radials