2.5" > 3" Exhaust Piping... Turbo Application! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

EchoOfSilence · 01-23-2005, 08:03 PM

I was reading this... and i was really surprised because it actually made sense. has anyone else read this?

sorry for the cross-forum reference guys

Exhaust diameter discussion on fresh alloy

Basically what it says is that on a turbo app the 3" downpipe is best because of the fact that the pressure differential across the turbine is higher with it, therefore higher turbine. then 2.5" piping to the back because of less heat loss and therefore higher exit velocity.

so therefore 3" downpipe, 2.5" piping out is best for turbo system.
What do you guys think?

01-23-2005, 08:03 PM	#1
EchoOfSilence Nissanaholic! Join Date: Aug 2003 Location: Los Angeles/Berkeley, CA Posts: 2,238 Trader Rating: (1) Feedback Score: 1 reviews	2.5" > 3" Exhaust Piping... Turbo Application! I was reading this... and i was really surprised because it actually made sense. has anyone else read this? sorry for the cross-forum reference guys Exhaust diameter discussion on fresh alloy Basically what it says is that on a turbo app the 3" downpipe is best because of the fact that the pressure differential across the turbine is higher with it, therefore higher turbine. then 2.5" piping to the back because of less heat loss and therefore higher exit velocity. so therefore 3" downpipe, 2.5" piping out is best for turbo system. What do you guys think? __________________ Petition Nissan to Make the IDx on http://IDxClub.co !

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