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Old 03-27-07, 10:20 PM
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Intercooler

Is the Apexi GT spec core big enough for a GT42R 20B?
Old 03-28-07, 02:10 AM
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How much power you're looking to make?
Although some may balk at that question, it's a very general idea of how much airflow you're trying to push through the motor.
I'd worry if you're trying to make over 500hp through that IC core...


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Old 03-28-07, 07:20 AM
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700-800 max

what size core/inlet/outlet would you reccommend?

Originally Posted by RETed
How much power you're looking to make?
Although some may balk at that question, it's a very general idea of how much airflow you're trying to push through the motor.
I'd worry if you're trying to make over 500hp through that IC core...


-Ted
Old 03-28-07, 05:15 PM
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Theoretically there is all this stuff and i am shure there is a formula that will tell you tha excact size ,given you know the core efficiancy and all .
But i have to say for around 800 HP , go as big as you can physically can (this is air to air right?) and i would use 3 1/2 inch piping
There might be some slight lag but i think the torque from the 20B will more then make up for it
Old 03-28-07, 08:29 PM
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Precision AS1026 31.50" 10.30" 3.50" 750hp 2.75" $500 at Titan
or
Greddy 4 row HG 25R Core for quite a bit more.
Old 03-29-07, 12:13 AM
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i bougt a 4 inch thick i/c on ebay for $127 . brand new from ss chrome. and the quality is excellent!!!!

you can't beat that.
Old 03-29-07, 07:16 AM
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Originally Posted by BLK FC3S
Precision AS1026 31.50" 10.30" 3.50" 750hp 2.75" $500 at Titan
or
Greddy 4 row HG 25R Core for quite a bit more.

will these fit?

i think the GT core is pretty large but nothing like the big greddys. it is 4in thick.
Old 03-29-07, 08:22 PM
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i know the precision fits, its what i run, greddy should fit no prob.
Old 03-29-07, 09:06 PM
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You could buy mine that I used on a T-76 20B project. Worked very well

https://www.rx7club.com/forum/showthread.php?t=633641
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