06-01-2004, 09:39 AM
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0h n0es!
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Join Date: May 2002
Location: Marlboro, MA
Posts: 267
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Quote:
Originally posted by TorG0d
Is the exhaust diameter 2.25" or 2.5"? Is the engine really that dependant upon backpressure to make 3" too big?
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No engine is dependant on backpressure. This is a very common myth. Engines depend on exhaust gas velocity for the scavenging effect, which helps suck exhaust out of hte cylinders. backpressure is a byproduct of an exhaust with the proper diameter. It isn't in itself what the engine needs. in fact, backpressure is bad. but an exhaust that is too open is worse, since it reduces exhaust velocity. a little backpressure is a neccecary evil.
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1992 Teal SVX LS-L 160k miles
4.11:1 final drive, K&B dropsprings, ART front rotors, stainless steel brake, aluminum underdrive crank pulley, Kuhmo Ecsta Supra 712's, K&N drop-in filter. Previously owned by Alacrity024. FOR SALE
1994 SVX LSi, Barcelona Red #1659, build date 11/93, 117k miles, RIP
ECUtune stage 1, bead crush, smallcar shift kit, TB bypass, SS brake lines, silencer removed, alternator and grounding wires, Mobil1 @ 117k
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