Conduit is usually galvanized or zinc coated (or something like that) so I doubt it would weld into the cat too well. Removing, modifying, or disabling any emissions equipment is definitely illegal... But I doubt the EPA is going to come knocking. Cheers, Jeff iPhone email. On Oct 14, 2008, at 3:59 PM, Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM > wrote: > there are many vanagons running with hollow cats. > That by itself does no harm. > ( if chunks of cat material went downstream into the > muffler..........that > could cause problems of course ) > > a factor to consider ............a hollow can for a cat doesn't flow > as well > as a good cat, or a straight pipe in place of a cat. > don't tell anyone I said this ............but a slick thing to do is > weld a > piece of straight pipe into a hollow cat. Best flow, least > restriction. > There's on size of EMT electrical conduit that fits perfectly - just > weld it > inside at both ends. I've never done this of course, just heard > about it. > > re 'puffing' from a muffler - the most fun one I ever saw would > expand out > on the side as pressure built in it........then > release..........looked like > the thing was alive and breathing. > it might be technically illegal to run without a cat, even if no > emissions > testing are required on your year van in your state. > ----- Original Message ----- > From: "Jim Johnston" <inmytree1@GMAIL.COM> > To: <vanagon@GERRY.VANAGON.COM> > Sent: Tuesday, October 14, 2008 6:06 AM > Subject: Running without a cat...? > > >> Hello all, >> >> Vehicle: 91 GL with 163,000+, manual >> Location: Wilmington, NC >> >> I'm trouble shooting a stumbling idle. I think I've found my >> problem. I >> noticed the exhaust puffing and the muffler had some odd sounds >> coming >> from >> the muffler itself. So I pulled the cat and muffler. I only >> snapped two >> of >> the three bolts. It turns out, my catalytic converter has nothing >> left. >> It's completely empty. The previous owner had a S & S Exhaust >> system put >> on >> a few months before my taking ownership 3+ years ago. The cat has >> big >> dents >> in it. My theory is this: when the shop put on the new Header and >> Muffler, >> they cleaned out the Catalytic Converter. In NC, vehicles older >> than 1996 >> do not require emissions testing. >> >> I started her up, while a bit loud, no more puff puff puff.... >> >> Would running with an hollowed out cat lead to the muffler breaking >> down? >> >> Now I have to figure out if I have to buy a muffler from S & S or >> does a >> stock muffler bolt up to the system. >> >> >> Jim >> Wilmington, NC |
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