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Re: emissions

To: british-cars@autox.team.net
Subject: Re: emissions
From: jesup@cbmvax.cbm.commodore.com (Randell Jesup)
Date: Mon, 15 Nov 93 15:03:07 -0500
>One of the tricks this guy mentioned to get the car through emissions
>was to set the gap on the valves quite large.  Like .002 instead of
>.001!  I asked why this would help, and he didn't know, but said that
>it does work.  My theory is that opening the rocker gap up allows a
>smaller amount of air/fuel into the combustion chamber and thus lowers
>emissions.  Comments?

        It's more likely the reduced overlap than any reduction in 
total charge.  (inlet opens later, exhaust closes sooner -> less overlap)

        Randell Jesup


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