Does a ported head affect emissions?

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Mar 16, 2003 | 01:14 PM

sporkcrx

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From: broke in the bay area, CA

Does a ported head affect emissions?

How so? I've been told it does, but I don't see how the hell it would, just as long as you have a fine a/f ratio.

Mar 18, 2003 | 09:34 PM

J2turbo21

Joined: Mar 2002

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Re: Does a ported head affect emissions? (sporkcrx)

I think it does,cause you wont make more power unless you add some more fuel.More fuel = more emissions.Anyone else?

Mar 18, 2003 | 09:43 PM

b19coupe

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From: Southern California, U.S.A.

Re: Does a ported head affect emissions? (sporkcrx)

If you change the way an engine breathes, you will affect emissions. I can not say for better or worse, or quantify how much effect it will have, but it will have an effect. I don't know of anybody who has done any testing in this area. Usually when a head is ported, the only tests made are to determine flow, hp/tq , and perhaps 1/4 mile times.