Interesting to note your success with pipes that did touch. I just did
a little more tweaking. I got them closer to level, and about a 1/4"
gap.

The pipes in the images are short, but I will be welding on another 90
degree to each, then of course, the rest of the exhaust system. I
didn't make that clear in my first post.

And speaking of "secure", I'll be incorporating a flex joint and will
brace the muffler to engine. Even so, I am glad I'll be getting a pro
to do the welds at flange. --- ;^)

Anyone know if I can tack weld these in place before taking them to the welder?

I imagine he would do his own tacks, grind off mine, then weld. But
I'm not sure of that.

Neil.

On Sun, Mar 30, 2008 at 12:50 PM, Mike <mbucchino@charter.net> wrote:
>   These pipes appear to be very short, will be held very securely and the
>  material is pretty rigid.  I doubt it will 'grind holes' where they touch,
>  but a small clearance would prevent even that possibility.
>    I have had exhaust systems that had similar pipes touching, and they
>  never failed where they touched.
>
>  Mike B.
>
>
>  ----- Original Message -----
>  From: "Jake de Villiers" <crescentbeachguitar@GMAIL.COM>
>  To: <vanagon@GERRY.VANAGON.COM>
>
>
> Sent: Sunday, March 30, 2008 3:29 PM
>  Subject: Re: Opinions needed. Exhaust pipes too close? PICS
>
>
>  > The vibrations will grind holes in the pipes where they're touching.  I'd
>  > move them, myself.
>  >
>  > On Sun, Mar 30, 2008 at 11:24 AM, Mike <mbucchino@charter.net> wrote:
>  >
>  >> Touching should be fine.  Many other vehicle exhaust systems hav pipes
>  >> that
>  >> touch.  Only corrosion-resistance may be affected, if its horizontal and
>  >> tends to trap mud and water.  You vertical arrangement shouldn't have
>  >> that
>  >> issue.
>  >>
>  >> Mike B.
>  >>
>  >> ----- Original Message -----
>  >> From: "neil N" <musomuso@GMAIL.COM>
>  >> To: <vanagon@GERRY.VANAGON.COM>
>  >> Sent: Sunday, March 30, 2008 1:54 PM
>  >> Subject: Opinions needed. Exhaust pipes too close? PICS
>  >>
>  >>
>  >> > Hi all.
>  >> >
>  >> > http://tubaneil.googlepages.com/exhaust
>  >> >
>  >> > In one image I could leave them touching, (contact area small) the
>  >> > other I could fudge the angles but would prefer not to.
>  >> >
>  >> > In either case, I'd be cutting these pipes shorter and welding 90
>  >> > degree elbows to them.
>  >> >
>  >> > Is heat, where pipes touch, a problem? Should they have seperation?
>  >> >
>  >> > Thanks!
>  >> >
>  >> > Neil.
>  >> >
>  >> >
>  >> > --
>  >> > Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"
>  >> >
>  >> > http://web.mac.com/tubaneil
>  >> > http://tubaneil.googlepages.com/
>  >> >
>  >>
>  >
>  >
>  >
>  > --
>  > Jake
>  > 1984 Vanagon GL
>  > 1986 Westy Weekender "Dixie"
>  > Crescent Beach, BC
>  > www.crescentbeachguitar.com
>  > http://subyjake.googlepages.com/mydixiedarlin%27
>  >
>

--
Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco"

http://web.mac.com/tubaneil
http://tubaneil.googlepages.com/