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View Full Version : Sizing up intercooler piping


white1jz90
02-28-2008, 08:22 AM
I have a 1j going into my mk3 with a ct26 soon 57 trim.What diameter of intercooler piping should i use? I am using a precision turbo 750hp intercooler not sure of end tank sizes can go measure because its in my car here at work though. My hp goal is somewhere around 400whp.
hottscennessey
02-28-2008, 08:46 AM
2.5" will be good, easy to fit and leaves room for your power goal to grow.
white1jz90
02-28-2008, 10:07 AM
2.5" will be good, easy to fit and leaves room for your power goal to grow.
what is 2.5" intercooler piping power level good to?
tissimo
02-28-2008, 10:13 AM
about 250 hp..

you need 4" piping for the big ct26 :biggrinki
white1jz90
02-28-2008, 12:21 PM
about 250 hp..

you need 4" piping for the big ct26 :biggrinki

haha yeah i know its a tiny turbo compared to alot of ppl on here but i think itll give me what i want....so seriously 2.5 right?
tissimo
02-28-2008, 12:42 PM
yea 2.5 is fine.. itll work for 500whp
Bigzavs
02-28-2008, 01:12 PM
2.5" is great for that setup
JASONA70
02-28-2008, 01:50 PM
i ran 3" way to much for a street/mild track set up. i pita to install too!
white1jz90
02-28-2008, 02:10 PM
i ran 3" way to much for a street/mild track set up. i pita to install too!

Can the 1jz make more power with a upgraded or stock ct26 then a 7m?also thanks for the feedback . Any suggestions or where to get a nice cheap universal kit with 4 ply couplers?
jmcboost
02-28-2008, 02:33 PM
Try Driftmotion. Kits are around $150 i think.
tlo86
02-28-2008, 05:56 PM
is the 1j TB 3''? i just did 3'' to the IC then from the other side i did 2.5
white1jz90
02-28-2008, 09:47 PM
is the 1j TB 3''? i just did 3'' to the IC then from the other side i did 2.5

any body have a mesurment?
Dylan JZ
02-28-2008, 09:52 PM
any body have a mesurment?

2 and 3/4 IIRC
Bigzavs
02-28-2008, 09:53 PM
^^^ bingo
SupraSportJack
02-28-2008, 09:54 PM
Most people run 2.5 without any probs...it's also alot easier to install than larger sizes
Dylan JZ
02-28-2008, 09:58 PM
2.5" also has slightly less initial pressure drop, so I've seen at least.. thats on stock twins.
white1jz90
02-29-2008, 08:56 AM
will i need a reducer or should the coupler be able to slide over the tb?
Dylan JZ
02-29-2008, 02:45 PM
will i need a reducer or should the coupler be able to slide over the tb?

I've seen alot of 3" > 2.5" reducers on the TB side.. But if you fought it you may be able to use a straight 2.5" coupler I suppose :shrug: