Intercooler pipe question.

SvoBrown · 12-25-2006, 02:53 PM

I'm redoing my IC and have a question on pipe. On my last setup I used 2.5 from the turbo to IC and then to the 65mm TB The IC had 2.5 inlet and outlet and the pipe was about 6' long.

New setup is off the wall. I want to use 2.25 pipe (30" of pipe) going to the IC that has a 3" in and out, Then go with 3" to the 65mm TB. (32" of pipe)

My idea is that the turbo has a small opening that will keep air speed fast and when it gets to the 3" IC opening. Well after that I get lost in what happens! It seem like the air will move faster to the ic with a smaller pipe???

I just don't like the idea of going to a large pipe right after the turbo.

Any one have an idea on this??

SlowJoe · 01-06-2007, 08:21 AM

The small pipe seems like it would help spool a little better.What size is turbo outlet?

SvoBrown · 01-06-2007, 12:23 PM

Turbo outlet is 1.75, ID. This will go to my 2.25 pipe and then to my IC 30" on down the line. Then goes to the 3" ic.

SlowJoe · 01-07-2007, 06:18 AM

i think i had 2.75 all the way with the holset hx35 and it seemed ok.All i can say is try it.

12-25-2006, 02:53 PM	#1
SvoBrown Senior Member Join Date: Nov 2005 Location: Graham AL Posts: 1,461	Intercooler pipe question. I'm redoing my IC and have a question on pipe. On my last setup I used 2.5 from the turbo to IC and then to the 65mm TB The IC had 2.5 inlet and outlet and the pipe was about 6' long. New setup is off the wall. I want to use 2.25 pipe (30" of pipe) going to the IC that has a 3" in and out, Then go with 3" to the 65mm TB. (32" of pipe) My idea is that the turbo has a small opening that will keep air speed fast and when it gets to the 3" IC opening. Well after that I get lost in what happens! It seem like the air will move faster to the ic with a smaller pipe??? I just don't like the idea of going to a large pipe right after the turbo. Any one have an idea on this?? __________________ ''Life's tough... it's even tougher if you're stupid.'' - - John Wayne

01-06-2007, 08:21 AM	#2
SlowJoe Mind Blowing Join Date: Jun 2006 Location: Dawsonville Ga Posts: 3,913	The small pipe seems like it would help spool a little better.What size is turbo outlet? __________________ Slow Joe Racing 2008 dodge ram 5.7 HEMI 1993 lx with a 289 and a 3 speed on the floor WTB 1955 t-bird project

01-06-2007, 12:23 PM	#3
SvoBrown Senior Member Join Date: Nov 2005 Location: Graham AL Posts: 1,461	Turbo outlet is 1.75, ID. This will go to my 2.25 pipe and then to my IC 30" on down the line. Then goes to the 3" ic. __________________ ''Life's tough... it's even tougher if you're stupid.'' - - John Wayne

01-07-2007, 06:18 AM	#4
SlowJoe Mind Blowing Join Date: Jun 2006 Location: Dawsonville Ga Posts: 3,913	i think i had 2.75 all the way with the holset hx35 and it seemed ok.All i can say is try it. __________________ Slow Joe Racing 2008 dodge ram 5.7 HEMI 1993 lx with a 289 and a 3 speed on the floor WTB 1955 t-bird project