Quote:
Originally Posted by aigel
The later air boxes had metal inserts that would distribute the fuel better at start up. IIRC the CIS gives an extra dose of gas in the air box. The inserts started in 1980, IIRC, you may want to search that.
With the "invention" of the pop off valve, this stainless upgrade is a pretty silly idea. It is probably heavier than the plastic. Maybe it was invented back when the air boxes would explode.
Unless you need a new air box anyway, why bother?
George
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I would disagree, from my experience I have had nothing but trouble with my pop-off valve. I have spent good money getting my CIS in top shape. Plastic to me doesn't seem to be the way to go. I have read several posts with people w/plastic boxes w/pop-offs that have either cracked or exploded. IMHO this seems like a better design.