tooo big an exhaust pointless?
#1
DONT FEED THE NOOBS
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tooo big an exhaust pointless?
is going to big of an exahust for a turbo car pointless? anything over 3 inch. the turbo outlet is only 2.5 big but i have a bnr stage 3. i currently have a 2.5 inch exahust and i cant build high boost.
#7
Originally Posted by gxlbiscuit
is going to big of an exahust for a turbo car pointless? anything over 3 inch. the turbo outlet is only 2.5 big but i have a bnr stage 3. i currently have a 2.5 inch exahust and i cant build high boost.
Cant build high boost, how high are you getting? What kind of wastegate are you using?
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#9
Yes, there is. With a non-turbo car, there is an ideal exhaust velocity to obtain maximum scavenging from the cylinders/chambers (and best efficiency/power). The smaller the pipe, the lower this peak occurs. Hence econoboxes with tiny exhaust systems - they're hitting ideal flow rates right around normal cruise. An insanely big exhaust system on a NA will just leave you with less low end torque and generally an unhappy engine.
For a turbo, the only factor is pressure differential over the turbo. The ideal case is the turbo venting to atmosphere. The exhaust system here is just a convenient way to route fumes through some baffling and out the back. There's no such thing as too big for performance, but there is a point of diminishing returns.
-=Russ=-
For a turbo, the only factor is pressure differential over the turbo. The ideal case is the turbo venting to atmosphere. The exhaust system here is just a convenient way to route fumes through some baffling and out the back. There's no such thing as too big for performance, but there is a point of diminishing returns.
-=Russ=-
#12
trying to build a racecar
Originally Posted by Syonyk
For a turbo, the only factor is pressure differential over the turbo.
We have a winner!
Lower pressure on the back side is always better. It's the only reason a turbo works in the first place.
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