exhaust pipe diameter, whats the diameter? Options

[ArizonaRed]

Anybody know the diameter of the 1.8L downpipe/ frontpipe coming off the manifold?

[playr158]

i actually think its 1.75" but that might be just south of the downpipe

This post has been edited by playr158: Sep 27, 2006 - 10:47 AM

[Bitter]

i actually think its 1.75" but that might be just south of the downpipe

from the manifold to the cat its a larger pipe, the just after the cat the size is reduced to damned tiny, but keep in mind that its ONLY a 1.8L engine and that most of its power is made at lower rpms, so having a smaller diameter pipe isnt as as hurtful as you'd think. i'd say any exhaust on the 7afe thats larger than 2.5 is going to start being too large and will slowdown the exhaust flow and harm the scavenging effect.

i just measured, its about 2". just to be clear, the pipe between the stock manifold and the cat converter is 2 inches.

This post has been edited by Bitter: Sep 27, 2006 - 11:45 AM