[urq] Hot Start/Thermal wrap

spot.ontheroad spot.ontheroad at virgin.net
Wed Jun 8 17:57:50 EDT 2005


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 
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


'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,
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