Intercooler pipe size with 2 intercoolers
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Teching In
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Intercooler pipe size with 2 intercoolers Building a 63 bel air twin turbo (362 borg Warners). Going to be running 2 bell intercoolers with 2 inch outlets,Stock 78mm throttle body ls6 intake on a 05 6.0 with jgs bov rossler 4l80e ptc converter strange 9 inch.
Wondering what size intercooler piping to run. Going to be about 4.5 feet of cold side piping.The Bov has a 3 inch weld on fitting and the throttle body is just a hair over 3 inch. I'm assuming 3 inch would be fine but have searched and searched and have no definitive answer. 3 inch would be the easiest to fit for sure as I'm going to be running it behind the front bumper. Just wondering if i would gain anything from going bigger like 3.5. Car is going to be a street car looking for 700 plus hp.
Thanks for the help
Wondering what size intercooler piping to run. Going to be about 4.5 feet of cold side piping.The Bov has a 3 inch weld on fitting and the throttle body is just a hair over 3 inch. I'm assuming 3 inch would be fine but have searched and searched and have no definitive answer. 3 inch would be the easiest to fit for sure as I'm going to be running it behind the front bumper. Just wondering if i would gain anything from going bigger like 3.5. Car is going to be a street car looking for 700 plus hp.
Thanks for the help
Last edited by 1985cucv; Sep 28, 2017 at 06:15 AM. Reason: More info
You don’t want to go over what is necessary. 3” from each turbo to the IC is crazy overkill for 700-800hp.
Going larger adds volume to the system which slows spool and velocity. Both are bad. 2” is likely about right going by the numbers. 2.25" is is what I’d use, 2.5" is overkill, and 3” is retarded overkill. Nothing to be gained over 2.25” IMO at 700-800hp levels with that setup. 3" outlet is fine.
Going larger adds volume to the system which slows spool and velocity. Both are bad. 2” is likely about right going by the numbers. 2.25" is is what I’d use, 2.5" is overkill, and 3” is retarded overkill. Nothing to be gained over 2.25” IMO at 700-800hp levels with that setup. 3" outlet is fine.
