[urq] Hot Start/Thermal wrap

[Thatcher Hubbard]

We're talking abot about an Urq here right?  As far as I know, the
stock downpipe is a single-tube affair (with the exception of the
short header that gets bolted to the bottom of the wastegate) from the
turbo back, at least mine is.

On 6/8/05, Andrew B <andrew.sb at gmail.com> wrote:
> Sounds good.  I have an upgraded downpipe, btw, I'm not sure who made
> it, but it's single tube instead of the (?) twin tube stock pipe.  I
> should be able to wrap enough of it to significantly cool the area
> near the starter.  I can't get all the way up to the turbo, but we'll
> see if I can work something out this evening.  It'll be pretty hot in
> that area regardless of whether the downpipe is wrapped (turbo,
> exhaust manifold).
> 
> I do have two heat shields on the starter right now.  One is wrapped
> tightly, the other is a little more loose.  They are aluminum with a
> fiberglass backing.  Maybe I'll pick up some ducting or something to
> try and rig another shield off the downpipe.
> 
> If this doesn't fix it I'll start working on the starter.  Thanks for
> the input, all.
> 
> -Andrew
> 
> On 6/8/05, spot.ontheroad <spot.ontheroad at virgin.net> wrote:
> > Andrew
> >
> > I have done the following to my car and never have hot start problems:
> >
> > Wrapped the starter in heat reflective wrap similar to standard.
> > Fitted an aluminium heat shield around the starter.
> > Removed my downpipe completely and wrapped it top to bottom with thermal
> > bandage.
> > Removed the auxillary radiator and raplced my rad with one from a coupe
> > quattro but had it rebuilt with a 5-row core (standard is 2-row)
> >
> > The thermal bandage takes heat away from the engine bay area, the removal of
> > the auxillary rad allows more ari in to the turbo/inlet manifold area and
> > helps keep things cooler. I have no problems with over heating or getting
> > hot. The temp gauge is always mid-way between cold and normal. I would not
> > have removed it without increasing the efficiency of the main rad though. To
> > do this you will need the hoses and thermostat housing from the coupe or
> > coupe quattro set up.
> > Also make sure the injector cooling fan cuts in when it is supposed to. This
> > happens very rarely nowadays.
> >
> > It is worth removing the downpipe fully and doing the job properly. I tried
> > to remove it from underneath, After lots of cut knuckles and bad language I
> > removed everything in that side of the engine and did it properly. With all
> > that out it is worth making a new heatshield for your LHS engine mount if
> > the old one is tatty. I made one from SS.
> > Hope this helps.
> >
> > All the best
> >
> > Keith
> >
> > '87 WR
> >
> > ----- Original Message -----
> > From: "Andrew B" <andrew.sb at gmail.com>
> > To: <urq at audifans.com>
> > Sent: Wednesday, June 08, 2005 3:47 AM
> > Subject: [urq] Hot Start/Thermal wrap
> >
> >
> > Just removed my downpipe...well, as much as I can with everything
> > still in the car.  I'm having fairly regular hot start problems.  When
> > it's hot outside, and I drive hard or in stop and go, the car won't
> > turn over.  With a jump, it starts fine.  Thanks to somebody's
> > suggestion, I'm assuming that it's the starter absorbing heat...so I
> > figured I would wrap the exhaust with one of those thermal wraps to
> > help keep temperatures down, and maybe vent the hood, but that's way
> > off in the future.
> >
> > Anyways, I can't quite get the DP all the way out of the car.  Being
> > that it was night, I was alone, and I don't really know what I'm
> > doing, I left it halfway out.  Should I wrap it as far as I can?
> > It'll cover the portion nearest the starter, but not all the way up to
> > the turbo.  Should I continue to try and remove the pipe so that I can
> > wrap the whole thing?  Will it matter?  Will it work?
> >
> > Thanks in advance,
> > -Andrew
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> >
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