Turbo piping size...
04-08-2005, 02:20 AM
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Turbo piping size...
I am in the process of installing my turbo kit and right now my turbo intercooler pipings are 2.25, i have to redo the piping from turbo to intercooler. My turbo outlet is 2.5in OD, 2.25 ID (t3/t67), and the intercooler outlets are 2 3/4in OD and 2 1/2in ID(precision IC). I am looking for about 500hp, Would 2.25in piping be ok or should i change it all to 2.50in pipings? I have searched and havent found too much info on this. Lemme have your input, thanks
04-08-2005, 03:08 AM
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Re: Turbo piping size... (tRaCeBuStAbUsTeR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tRaCeBuStAbUsTeR »</TD></TR><TR><TD CLASS="quote">hmmm its so confusing. I don't really get that, can you explain?</TD></TR></TABLE>
It's pretty simple really. For your given power goal you are gonna flow a certain amount of air (CFM). At different piping diameters that CFM will be moving at different speeds. Larger piping will lead to slower intake air velocity. smaller piping diameter has faster intake air velocity, but with smaller piping there is a point at which the piping size starts to affect flow. If you look at the number in that thread you can see what the max CFM you can go for each piping size. I roke it down by pipe size, and how fast the air is moving at a given CFM.
At about 304 MPH or 0.4 mach you start to get flow loss from increased air drag in the IC system. A 2.25" pipe should be good for max 740 CFM, and a 2.5" pipe should be good for about max 900 CFM. You would have to find out how much CFM <u>your</u> specific setup would flow. At 500 HP, I'm guessing you would be at about 600-700 CFM, but that's just a wild guess. So maybe from the comprssor to the IC inlet you could stick with 2.25" pipe to keep the velocity up, and from the IC to the TB you could stick with 2.25" or go with 2.5". Just by looking at the numbers, you aren't getting too much loss with that switch.
EDIT: of course I think you should still ask one of the experts who have actual experience with high HP setups. Those numbers I wrote are just sorta a rough guide.
It's pretty simple really. For your given power goal you are gonna flow a certain amount of air (CFM). At different piping diameters that CFM will be moving at different speeds. Larger piping will lead to slower intake air velocity. smaller piping diameter has faster intake air velocity, but with smaller piping there is a point at which the piping size starts to affect flow. If you look at the number in that thread you can see what the max CFM you can go for each piping size. I roke it down by pipe size, and how fast the air is moving at a given CFM.
At about 304 MPH or 0.4 mach you start to get flow loss from increased air drag in the IC system. A 2.25" pipe should be good for max 740 CFM, and a 2.5" pipe should be good for about max 900 CFM. You would have to find out how much CFM <u>your</u> specific setup would flow. At 500 HP, I'm guessing you would be at about 600-700 CFM, but that's just a wild guess. So maybe from the comprssor to the IC inlet you could stick with 2.25" pipe to keep the velocity up, and from the IC to the TB you could stick with 2.25" or go with 2.5". Just by looking at the numbers, you aren't getting too much loss with that switch.
EDIT: of course I think you should still ask one of the experts who have actual experience with high HP setups. Those numbers I wrote are just sorta a rough guide.
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