

| Subject: | Fwd: � � � '85 Vanagon with a loud identity crisis |
| From: | Devin Chalmers |
| Date: | Sat, 31 Aug 2002 03:44:08 -0800 |
Exhaust, eh? That's what my dad thought it was, also... we looked and noticed that the exhaust pipe seemed to have gone missing, but I honestly can't remember if it was there when we bought it... (I know, I know, I'm a bad owner.) I assume there's not much I can do 'at home' about this? I guess it's probably alright to drive until we can get an appt. with the Vanagon guy in town, anyway. It's a little incredible to me that this is all that it could be, cause the difference in volume is just insane. And yeah, there's quite a bit of backfiring also. And you could be right about the psychological aspect of having a crazy loud engine. This sounds pretty plausible to me, are there any other possibilities of what it could be? Thanks again, Devin Chalmers Begin forwarded message: > From: Clive Smith <clive.harman-smith@NTLWORLD.COM> > Date: Sat Aug 31, 2002 02:26:24 America/Anchorage > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Re: � � � '85 Vanagon with a loud identity crisis > Reply-To: Clive Smith <clive.harman-smith@NTLWORLD.COM> > > ----- Original Message ----- > From: "Kim Brennan" <KimBrennan@AOL.COM> > To: <vanagon@GERRY.VANAGON.COM> > Sent: Saturday, August 31, 2002 6:48 AM > Subject: Re: '85 Vanagon with a loud identity crisis > > > In a message dated 8/31/02 1:31:49 AM, seraphim@GCI.NET writes: > > >> Apparently, my Van thinks she's a Harley Davidson. When she idles, >> there's an odd, loud PUT-PUT-PUT that gets even worse when I >> accelerate. She seems to be running fine, if anything the acceleration >> seems better than normal, except that the problem she has with sort of >> hesitating at stop lights has gotten more frequent and more >> pronounced. >> > >> Hole in the exhaust system. Might be in the pipes to the cat, or the > muffler > itself (but probably before the muffler). Since mufflers tend to > be...slightly restrictive on the flow of exhaust gases, at least on > most > cars, when you have a hole in the system ahead of them, you may notice > more > power and an easier running motor. Of course you also notice how LOUD > the > engine is (after all, it is Exploding gas to make that power!).. > > I'd suggest that most holes in exhausts actually reduce power. A weak > mixture is one result (hence coinnected to rough running and > backfiring on > the overrun), splashy irregular shockwaves in the syetm etc. etc. Any > supposed power gains are usually psychological due to the loder noise. > This > is in contradistinction to a properly designed shorter or more open > 'tuned' > exhaust, which don't always give the increased power they are supposed > to > and if they do, only in a narrower power band, with poor running and > reduced > torque elsewhere. > > Sorry, but this doesn't help your question, and I'm not suggesting > that Kim > is wrong about a blown exhaust - > > Clive > '88 Syncro Transporter >
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