Thanks to Eric's explanation and Ron's exhaust pipe diagram
 http://www.busdepot.com/exhaust8.htm ), I now know that what I had thought
was two pipes is really only one.  At the time I posted the question I
didn't realize that the #1 and #3 exhaust pipe on my recommended repair
ticket referred to cylinders and not two separate pipes.

Thanks again,

Steve

89 Westy

> -----Original Message-----
> From: �ric Giroux [mailto:giroux@hydromantis.com]
> Sent: Monday, August 23, 1999 7:55 AM
> To: Steve Macaulay; vanagon@GERRY.VANAGON.COM
> Subject: Re: #1 and #3 exhaust pipes
>
>
> Steve,
>
> The pipes are usually referred to as front, back, and collector.
> The front pipe is for cylinder 1 and 3
> The back pipe is for cylinder 2 and 4
> The collector takes the output of both the above and sends it to the cat.
>
> Looks like you need only one pipe replaced, the one getting
> cylinder 1 and 3??
>
> Eric
> p.s. I don't have bentley here, so it could be the reverse: front
> for 2 and
> 4, back for 1 and 3....sorry for the confusion!
>
>
>
> At 10:38 99-08-23 -0700, Steve Macaulay wrote:
> >After doing a recent headgasket replacement, my trusted local non-dealer
> >mechanic told me I need a new #1 and #3 exhaust pipes replaced on my 89
> >Westy due to some holes/cracks in them that would prevent it from passing
> >inspection next month (they are pretty rusty, so it wasn't a big
> surprise).
> >I have a Bentley but I couldn't identify from the picture and
> descriptions
> >which pipes are considered to be the #1 and #3 pipes.  I'll know
> which ones
> >they are next week when I go to the shop and have him point it out to me,
> >but until then I was hoping someone could help me identify in the Bentley
> >manual which pipes are considered to be the #1 and #3 pipes.
> >
> >Thanks,
> >
> >Steve
> >
> >89 Westy
> >
> >
>