What will be the ideal pipe size for turbo piping with less than 10psi of boost? Is there a general formula to get the right diameter of pipe for a given boost pressure? I am thinking of getting 2" diameter size since it is low boost application.
What will be the ideal pipe size for turbo piping with less than 10psi of boost? Is there a general formula to get the right diameter of pipe for a given boost pressure? I am thinking of getting 2" diameter size since it is low boost application.
2" is more than sufficient for a T25 or T28. If your going to run more boost than 10psi it would be a good idea to run 2" on the hot side and 2 1/2 on the cold side.
You've got to balance the ability of the piping to carry the compressed air to the intake system (small diameter=increased pressure drop) against the volume of the piping between the compressor and the intake (large volume=increased lag).
For low boost, 2" piping between the compressor and the intake should be large enough to have an acceptable pressure drop (maybe 2-3psi) with low lag.
2.0 in. from the comp to the IC and 2.5 in. from the IC to TB works well. we have "transitioned" to 2.5 in from the comp outlets on T25/T28's and T04E's, and there isnt much more lag....its hardly even noticeable. going with 2.0 in. will support 10psi power levels on a smaller turbo just fine. personally, i like to match up the diameter of the piping with the IC inlet/outlets, TB size, and compressor outlet.
2.0 in. from the comp to the IC and 2.5 in. from the IC to TB works well. we have "transitioned" to 2.5 in from the comp outlets on T25/T28's and T04E's, and there isnt much more lag....its hardly even noticeable. going with 2.0 in. will support 10psi power levels on a smaller turbo just fine. personally, i like to match up the diameter of the piping with the IC inlet/outlets, TB size, and compressor outlet.
what about if you go 2.5 all the way? will it affect anything
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One Must Allways push the limits ,Because if you never fail you will never succed. :cool:
i have 2" piping on my 1.6 turbo, and the lag isnt even there it seems like...currntly, i have a t25 at 7 psi, but ill see how the pipings is after i turn up the boost a little
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95 200sx se. sr20de, gt28r, bb manifold, forge fmic, greddy bov and bc, tial 38mm, walbro 255, apexi tt, 3" exhaust with magnaflow, 3" downpipe, jgy clutch flywheel and fuel rail, msd 50#'s, cobra maf, jwt ecu and s4's, nismo fpr, autometer, nissport adaptors, fal pushers, ur pulley, m/t 22x8x15 et drags.
Is there a formula for this? I'm looking at getting mine replaced too, for cosmetic reasons only. I believe it's 2.5". Would that be best suited for a T3/04E GTR based turbo on a 2.5L at 17psi?
Is there a formula for this? I'm looking at getting mine replaced too, for cosmetic reasons only. I believe it's 2.5". Would that be best suited for a T3/04E GTR based turbo on a 2.5L at 17psi?
just keep 2.5"...how was it working for you before? how was lag? how was the power? did you always have it at 17psi?
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95 200sx se. sr20de, gt28r, bb manifold, forge fmic, greddy bov and bc, tial 38mm, walbro 255, apexi tt, 3" exhaust with magnaflow, 3" downpipe, jgy clutch flywheel and fuel rail, msd 50#'s, cobra maf, jwt ecu and s4's, nismo fpr, autometer, nissport adaptors, fal pushers, ur pulley, m/t 22x8x15 et drags.
me too (2 hot 2.5 cold)! I don't think it matters because you've got the intercooler in between... I just always assumed you would have the least pressure drop this way.
just keep 2.5"...how was it working for you before? how was lag? how was the power? did you always have it at 17psi?
I run 11 most of the time, but I can run 17 with pump gas. Comes on at 3K and full boost around 3600, I just thought I'd ask cuz I'm not sure if we're sandblasting and rewelding what's in there or redoing it all and it seemed like a good time to hijack. Sorry carry on...
2.5" will be fine, the only drawback is that it is a little harder to route 2.5" pipe vs. 2". you might have to do a little more trimming here and there to get it to snake around just right.
-dave
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Originally Posted by Rodrigo
I am just gonna go 2.5 all around so that later on in the future my :dumbass: ass dont say dam i should have goten 2.5 from the get go.
personally, i like to match up the diameter of the piping with the IC inlet/outlets, TB size, and compressor outlet.
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