[DML] Digest Number 1320

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      1. Red Hot Exhaust / Melted Catalytic Converter
           From: "content22207 <brobertson@xxxxxxxxxxxx>"
<brobertson@xxxxxxxxxxxx>


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Message: 1
   Date: Thu, 26 Dec 2002 18:45:30 -0000
   From: "content22207 <brobertson@xxxxxxxxxxxx>"
<brobertson@xxxxxxxxxxxx>
Subject: Red Hot Exhaust / Melted Catalytic Converter

Am on Xmas vacation, so this is first time I've seen list all week...

It is indeed possible to melt the guts of a honeycomb style catalytic
converter. Not sure why (stuff has consistency of ceramic), but I did
so when my car ran too LEAN (remember guys: fuel cools. Until Martin
G's PRV man diagnosed my re-tuned, hence over-advanced engine -- still
getting used to life without a carburetor -- was so rich I could
actually hold exhaust tips in my hands). Telltale sign of stopped up
converter is glowing exhaust AFTER the the thing. I think it's heat
from added resistance.

Do you live in an area with emissions testing? You'd be amazed how
much restriction a converter puts on exhaust flow. And even when
properly functioning is unreasonably hot.

Bill Robertson
#5939





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