Yes, I used "sensor-safe" RTV silicone. I should have mentioned it. To prevent confusion after the fact, the 2-1 manifold I refer to is the cast iron elbow that joins the front and rear header pipes to the large single pipe on the left side. On other forums manifolds are commonly referred to by their numbers of ports, like 4-2-1 or 4-1, I was simply using the same shorthand here. Sorry it was confusing. Gregory Smith '88 Vanagon GL Smith Design Studio Small Building Company Olympia, WA 360-239-0429 gregoryfsmith.com -------- Original Message -------- Subject: Re: '88 Exhaust help From: Scott Daniel - Turbovans <scottdaniel@turbovans.com> Date: Sun, September 02, 2012 9:06 pm To: Gregory Smith <gfs@GREGORYFSMITH.COM> Cc: vanagon@GERRY.VANAGON.COM You might want to check if your RTV silicone says 'sensor safe' on it. generally ..it's a no-no to use a sealant like that where there is an oxygen sensor - sensor contamination can result. Though sealants these days often say sensor safe on the tube. there's the 1-3 forward exhaust pipe, and the 2-4 rear one. But no 1-2 I can think of. you can run a straight pipe ...or even a straight pipe inside a hollow cat. A piece of EMT conduit fits perfectly....just guessing. It might be that hardly anyone makes one as it would be illegal in many places to do so. There has been such an official part like that of course, once upon a time. Perhaps still. it will help slightly with power. a good cat is best. A hollow cat is not that good, exhaust flow wise. a straight pipe is very slightly better. |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.