[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
TurboDiesel exhaust (was Re: got my 2.5" centre pipe!)
Is that road salt in there? Hope not.
Rick Alexander
----- Original Message -----
From: "Drew MacPherson" <drew@scirocco.cs.uoguelph.ca>
To: "Decker" <boisfort@myhome.net>
Cc: <scirocco-l@scirocco.org>
Sent: Thursday, March 13, 2003 11:58 AM
Subject: TurboDiesel exhaust (was Re: got my 2.5" centre pipe!)
>
> I have a 1.6 hydro (box o' 89+ TD jetta parts) with an AAZ (A3 1.9td)
> turbo. My donwpipe is currently the A3 pipe cut below the flex join with
> an A1 TD downpipe (cut at the swivel) welded on. The new downpipe will
> use the 2.25" mandrel bend welded on at this point.
>
> The A3 pipes bolt straight to the turbo and incorporate a stainless
> braided flex join - they are far less restrictive than the cast elbow used
> on A1 and A2 TD's.
>
> You can see pics of the current downpipe on my web page under
> powertrain, or here:
>
> http://scirocco.cs.uoguelph.ca/gtd/carrots_dp1.JPG
> http://scirocco.cs.uoguelph.ca/gtd/carrots_dp2.JPG
>
> I use the later style A3 downpipe to match the later style KKK turbo, but
> the earlier A3 pipe bolts right up to A1 and A2 turbos.
>
> With the smaller diameter A3 turbo (and no muffler) and 12psi wastegate
> the 1.6TD performs quite well, spooling very quickly (boost comes on much
> lower than the bigger A1/A2 turbos, building from 1500)
>
> Drew
>
> On Thu, 13 Mar 2003, Decker wrote:
>
> > 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 |
> > > \=============================================/
> > >
> > >
> > > _______________________________________________
> > > Scirocco-l mailing list
> > > Scirocco-l@scirocco.org
> > > http://neubayern.net/mailman/listinfo/scirocco-l
> >
> >
> >
> > _______________________________________________
> > Scirocco-l mailing list
> > Scirocco-l@scirocco.org
> > http://neubayern.net/mailman/listinfo/scirocco-l
> >
>
> --
> /=============================================\
> | 84 Wolfsburg Edition TurboDiesel Scirocco |
> | http://scirocco.cs.uoguelph.ca/gtd |
> \=============================================/
>
>
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l