On Tue, Jun 28, 2011 at 5:28 AM, mark drillock <mdrillock@cox.net> wrote:

> Some people have had good service from their TIICO. I would not say they
> are crap, just that they have a checkered past. I would dare to say the
> same about most any conversion. Exhaust durability issues prevail. The
> conversions improved with time and further development.

Depending on the swap, some might be tempted to find kludgy work
arounds or poorly fabricated parts.

Not to get too far OT, but if one is mentally trying to deal with a
"thousand" things during the swap process, something like an exhaust
system detail(s) can easily get overlooked. This was my experience to
a certain degree but then I "bit off" quite a bit for a 1st time
effort; I had never made an exhaust system before let alone do any
real attempts at welding.

Rhetorical questions: was Tiico exempt from this mind set? What parts
and techniques did they develop in house?

One image I have of the Tiico engine shows the exhaust downpipe flange
bolted straight to the manifold. Yes the DV did this too, but .... are
the exhaust damaging vibrations one typically sees in an I4 gas engine
present in a DV engine, same RPM? Regardless, I think that was part of
the problem in the Tiico exhaust design; bolting the downpipe straight
to the manifold. On the Mk3 (and later?) VW put those flex bushings
between manifold and downpipe flange for a reason as they did with
their "toilet bowl" junction for the single downpipe.

Neil.

-- 
Neil n

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