Daniel,
As you may be able to make out from the photos posted to Gerard's web site,
the manifold is custom made and very short reach to the turbo that sits
where the SUs would normally be. I think the addressable part of the heat
problem is the exhaust pipe from the turbo outlet. It starts forward toward
the top tank of the radiator, making a quick 180 and then dropping out the
bottom of the car to continue on as normal. This leaves about two feet of
extremely hot 2" pipe exposed in the high part of the engine compartment.
This is the part I would be wrapping. Since this is the sort of pipe that
is easily fabricated at any muffler shop I'm not really worried about a
possible reduction in life. Fact is, if it does rot out soon, I can have a
better fitted one made that will give more clearance to the radiator top
tank.
Many of the successes I've enjoyed in life are from doing exactly what
others tell me are impossible or unadviseable. In this case I'm more that
willing to risk a few feet of cheap pipe.
Regards,
Glen Byrns
'59 bugeye
----- Original Message -----
From <Daniel1312 at aol.com>
To: <froggi@cdsnet.net>
Cc: <JustBrits@aol.com>; <grbyrns@ucdavis.edu>; <spridgets@autox.team.net>
Sent: Wednesday, July 26, 2000 11:35 AM
Subject: Re: under bonnet heat
> I spoke to Janspeed about the whole issue of exhaust wrap and they advised
me
> that while exhaust wrap did work - it also considerbly shortened the life
of
> the manifold. Peter Burgess (MGB tuner and author) did not find that the
> exhaust wrap did work for his engines but did warp the manifold such that
it
> was scrap. My research with exhaust manifolds and temperatures led me to
> conclude that Stainless steel was not the best material to use for the
> manifold.
>
> A turbo exhaust manifold is generally made of a different alloy than
ordinary
> exhaust manifolds in order to withstand higher temperatures. I got the
> impression that your turbo installation is not an off the shelf package.
>
> Why not try it and give the list monthly mileage updates on how it is
holding
> out, along with the turbo bearings?
>
> BTW I still agree with Ed on this one <G>
>
> Daniel1312
>
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