Date: Sat, 31 May 2008 09:09:22 -0700
Reply-To: neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil N <musomuso@GMAIL.COM>
Subject: Re: Cat/Muffler Too Low? (PICS)
In-Reply-To: <4840ADF3.6010402@turbovans.com>
Content-Type: text/plain; charset=ISO-8859-1
Hey Scott.
Currently running 14" wheels with Nexen tires. Soon to be replaced
with 15" and ? tires.
I was concerned about the distance between the bottom of the exhaust
(especially cat) and ground.
The engine is mounted at 15*. I assumed a DV exhaust wouldn't fit.
Couple that up with a total of "zero" previous experience, and you
get what I did! --- ;^)
The exhaust runs to the front, then down and around the carrier I built:
http://pages.google.com/edit/tubaneil/exhaustdownpipey?authtoken=bf7f829ed4ecef1d8e7074220e05cfc398183cd4
I left about 1" clearance between the carrier and the exhaust (for
engine movement). Any lower, (and toward the driver side) and the
exhaust would be lower plus it would be closer to the tire. Something
I didn't want.
So given what I used as a design, it seems to me, that for the *most*
part, the carrier dictates the height of the muffler.
I may end up cutting the piece that will attach the end of the pipe
shown, at an angle to get it "up" to the cat/muffler mounted at a
better height.
I'd rather not though.
For sure, one of the future projects (assuming Frankenstien runs!) is
to build a better exhaust (primaries portion to flex joint)
What I should do, is go to the wreckers and find a DV exhaust to use
as a template and see how it fits, though I think my design (roughly
based upon the TIico setup) is what will fit given the carrier I'm
using. In future I may even consider running it around the driver side
axle to add length.
Thanks for the tip on the Volvo exhaust part. My goal was to use "off
the shelf" exhaust stuff. i.e. stuff from Dynomax. Partly to help the
next person (should they be crazy enough to do this kind of
conversion!!)
Neil.
On Fri, May 30, 2008 at 6:46 PM, Scott Foss - Shazam
<scottdaniel@turbovans.com> wrote:
> neil N wrote:
>
> Hi all.
> My first hit is - not that bad.
> But you are spekaing realitive to the body, which isn't your real
> concern..........what size rear tires to do your run. How tall is your rear
> suspensionh.
> But why don't you tuck it up in there better ?
> THERE IS ABSOLUTELY NO REASON that you shouldn't be using a variation of
> the dead stock diesel vanaogn exahsut system...........and that tucks up in
> there perfectly, and that's an inlie 4 just like yours. I seem to be the
> only engine conversion person saying this, but believe me, the engineering
> of the stock diesel vanagon exhasut system is DEAD PERFECT.
> I have used that EXACT mounting system of many TD vanaogns.........differnt
> size pipes say, different muffler than DV, but the same mounts and concept,
> and never, ever any problem at all. I even get reporduction stock brackets,
> only more heavy duty ........made.
> Look in your Bentley manual............and that layout ........is exactly
> what you want. Adapted somewhat for your ABA setup of course. It will look
> dorky below the body like that too - badly so.
>
> I know, i know it is SO much more effort to engineer it really 'perfectly.'
> I must spend 10 hours or more doing them......but it's really great when it
> works perfectly for a long time, looks
> right...........and................they way i make them............this is
> just copying the stock DV conept and layout - the entire exahsut system
> comes of in 20 minutes , by about 12 bolts !!
>
> Here's a tip - I get Volvo 'over axle' exahsut pipes.........like 240 or
> 740.........on front engine, straight rear axle cars, sometimes there is a U
> -shaped pipe that goes over the straight rear axle. I just buy those, but
> them into the curves i want, and make the 'compound S curve' that a DV
> uses...........you want the Exhasut it to go down, forward some , then turn
> under the left aluminum engine mounting bracket, then do a sharp U turn to
> meet the muffler going across the back. I just built that 'S curve' in
> sections using 'over axle' pipes for Volvos - the turbo one is bigger, i use
> a mix of them ( 740 turbo sedan ) .
> I just tack weld it - I build 'in place'........take it off the van. weld
> it some more, test fit again........then i often have my welder finish weld
> it off realy well. I have driven my exahust systems that i've made this way
> for 70,000 miles with nary a thought about it ever.
>
> I hope something comes to mind for you easily, Neil !
>
> Scott
> www.turbovans.com
>
>
>
>
> Like the subject says. --- :^)
>
> Pics:
>
> http://tubaneil.googlepages.com/Toolow1.jpg/Toolow1-full;init:.jpg
> http://tubaneil.googlepages.com/Toolow2.jpg/Toolow2-full;init:.jpg
>
> I guess the real question would be is it dangerous this way?
>
> (cat igniting tall grass....... or cats! --- ;^)
>
>
> Muchos thankos!
>
> Neil.
>
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