got my 2.5" centre pipe!

[boisfort@myhome.net (Decker)]

Hi Drew;
    I took the yoke that clips on to the cast iron Jetta turbo diesel down
pipe and cut it off to about 1 inch. I then had my muffler shop flare a 2
and one quarter in pipe which we welded into the yoke. They then built a 2
and a quarter inch straight pipe to exit out the back. I also had the
muffler shop put a 45 degree bend in a pipe the same OD. as the turbo intake
side and used it to go to a rectangular K and N intake filter which I
installed in the rain tray. So now I have a much improved cold air intake
and a two and a quarter in straight pipe exhaust. My Jetta turbo diesel
setup is running on a 1600 N/A block and head ( Raceware head studs ). It
works wonderfully coupled with a FF 5 speed in my 1981 Rabbit pickup. The
turbo spools up quickly and pulls to the 10 LB waste gate in the lower gears
with ease. I have  no exhaust gas temperature problem. At 70 mph on the
flats
I am running about  4 to 5 lbs. of boost and about 750 degrees F. or so on
the pyrometer.
    I have about 40,000 miles now on the engine. The first 20,000 were with
a BAE turbo setup with which I could never cure the high exhaust gas
temperature problem ( I watched the pyro like a hawk and kept my foot out of
the pump ). With the VW Jetta turbo setup the high exhaust gas temperature
problem was solved. To anyone considering a turbo on their 1600 diesel I
highly recommend the VW Jetta setup but even tho there are still some BAE
turbo setups around I would recommend staying away from them.

Brian Decker
----- Original Message -----
From: "Drew MacPherson" <drew@scirocco.cs.uoguelph.ca>
To: "Shawn c Meze" <skerocdriver@juno.com>
Cc: <scirocco-l@scirocco.org>
Sent: Thursday, March 13, 2003 7:10 AM
Subject: Re: got my 2.5" centre pipe!


> On Thu, 13 Mar 2003, Shawn c Meze wrote:
>
> > Its going on a 1.6L? whu-why?
>
> Because it's a turbo diesel.  No exhaust is best - a really big exhaust is
> a compromise... :)  Diesels don't reqquire backpressure  the way gas
> motors do, as they're always running at full throttle - and turbo diesels
> really benefit from low exhaust restrictions as it helps the turbo spool
> faster and lower EGT's.
>
> 2.5" is likely a bit overkill, but it was actually cheaper to get the 2.5"
> stainless piece than the 2.25" aluminized piece (which includes a
> resonator.)
>
> I conisdered running a fat stack out from the passenger's fender or
> something, but in the end I figured I'd have to put a gun rack in the back
> window to complete the install.
>
> Drew
>
> --
> /=============================================\
> |  84 Wolfsburg Edition TurboDiesel Scirocco  |
> |    http://scirocco.cs.uoguelph.ca/gtd       |
> \=============================================/
>
>
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