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How does intercooler piping area/diameter relate to compound turbo setups where both stages are intercooled and you get about double the density and pressure then regular single stage setup?
I'm currently building compound turbo setup on 1.8 20v audi a4 and goal is 850hp.
My current setup will have 3" piping from low pressure stage to 1000hp garrett core water/air intercooler and 3" to HP stage after that I have room for 2.5" and I believe that this should be enough since density will be bigger and it will be pushed with 2x the pressure then LP stage. So basically I will push same amount of CFM as LP stage but at much higher pressure and density.
I'am also trying to minimise the volume of pipes and length of complete setup since length of pipework directly relate to resistance to flow(same as density of medium)
Did any of you guys/gals fiddled with this?
I would be glad to hear/read from more experienced people on this topic.
Cheers
Hi. I think Garrett guideline should be helpful.
I wouldn't go smaller than 3" at your desired power level given the approximate amount of flow required.
You'll also want to avoid tight bends. The link Shota offered has some helpful guidelines.
Thanks for helping!
Cheers to both..
