Good points. And that's interesting re bolted flanges. I always
assumed they were there *only* to help with servicing the exhaust.

So with the TD, the obvious purpose aside (turbo boost), if I were to
assume that the turbo dampens exhaust pulses, does this dampening
reduce wear and tear on the exhaust system or just reduce exhaust
noise?

Neil.

On 2/9/14, SDF ( Scott Daniel Foss ) <scottdaniel@turbovans.com> wrote:

> About the I4 diesel set up ...
> for turbo diesel conversions mounted ala stock Diesel Vanagon ( which I
> strongly recommend ..doing it the way VW did ..engine tilted to the left
> at 50 degrees )
> all I have ever done is reproduce the stock DV system *exactly* ..
> just in bigger pipes and with a glass pack, and I can't think of a case
> where that did not last just 'forever' ..
> and ..
> one would think an inline 4 gas would have less vibration than an inline
> 4 diesel.
>
> I've never even put  a flex section in any exhaust system , just never
> needed to.

> in my world, all pipe to muffler and pipe-to-cat junctions are bolted
> flanges, per stock arrangement and never welded ...the junctions likely
> allow expansion and slight movement, further reducing tendencies to crack.
>
> Readers may recall one of my engine conversion mottos ..
> "Do what the manufacturers do."
>
> When they've been doing something the same way for decades ..you know it
> works.
> Why reinvent the wheel, aye ?

--
Neil n

Blog: tubaneil.blogspot.ca

'88 Westy http://tinyurl.com/c8rlw6p

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG *Gas* inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej