Hood Vents

[Pantelis Giamarellos]

I can also recommend the Thermo-Tec exhaust manifold and exhaust system
wrap.
I have used it on my turbodiesel Land Rover Discovery 200Tdi.
The section I have covered is the exhaust downpipe from the turbocharger to
the part of the exhaust that run the length of the vehicle.

After wrapping this part I can feel the decrease in temperature inside the
vehicle especially when compared with my other Discovery which is exactly
the same type and engine but has not had its exhaust downpipe covered.
As an indication after using the car for a long time you can still touch
(but not hold) your hand on the downpipe, something which is not possible on
the non covered vehicle.

My next projects for the "wrapped" Discovery including wrapping the exhaust
tube up and well after the length of the car where the gearbox and transfer
box. I am sure this will greatly assist into keeping both the gearbox and
transfer boxes cooler and on the same time allow the exhaust gazes to flow
more freely since their temperature is kept inside the exhaust tube and
therefore they should flow more easy.

I have not seen any performance gains but after all on a 3000 kilos 150 bhp
turbodiesel engine (tweaked) it is almost impossible to have any sense of
acceleration (especially when compared with the fast car in the family)

BTW when the RS2 will get its big service (including a precautionary
servicing/check of the turbocharger, timing belt, water pump etc change) I
will try and wrap its exhaust downpipe and tube also.

Take care
Pantelis


----- Original Message -----
From: "Brett Dikeman" <brett at cloud9.net>
To: "Jim Green" <jeg1976 at yahoo.com>; "Quattro list" <quattro at audifans.com>
Cc: <QSHIPQ at aol.com>
Sent: Saturday, June 07, 2003 9:02 AM
Subject: Re: Hood Vents


> At 8:52 AM -0700 6/6/03, Jim Green wrote:
> >I think it's time for some hood vents.  I just about
> >burned my hand when I leaned on my hood yesterday.
> >The area above the turbo is scary hot.
>
> Funny.  My father just solved the heat problem on his 944t.
>
> Header wrap, as per recommendation by John Milledge- widely
> considered one of the 'gods' of 944 engine building.  Sort of looks
> like webbing, and you secure it in place with metal bands that clip
> together.  Installation was aided by the engine being on an engine
> stand :-)  In any case, my father reported a noticeable improvement
> in underhood temperatures post-race.
>
> Milledge specifically said not to coat the inside of the manifold.  I
> couldn't think of why, except endangering the turbo from loosened
> bits of whatever coating you use.  Anyone?
>
>
> Brett
> --
> ----
> "They that give up essential liberty to obtain temporary
> safety deserve neither liberty nor safety." - Ben Franklin
> http://www.users.cloud9.net/~brett/
>