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Aug 24th, 2023
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Joined: Dec 2008
Posts: 21,871 Likes: 168
Roadster Guru Member of the Inner Circle
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OP
Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 21,871 Likes: 168 |
The offside wing gets very hot over the cat, and in fact the underseal goes shiny and wet when the cat is hot. So I played around with some offcuts of aluminium, and some woven heat barrier, and some 'Reflect-a-Cool' and this is what happened: A simple rectangle, approx 8" x 9" bent over the cat.  With Reflect a Cool on the outside.  Woven mat on the inside:  Securing legs bolted on and insulated:  The cat with a lick of high temp paint where it shows.  It works well, but the wing still gets warm, so I may try spacing the shield a bit further from the cat surface.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Jan 2012
Posts: 14,976 Likes: 1
Member of the Inner Circle
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Member of the Inner Circle
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Posts: 14,976 Likes: 1 |
Richard
1976 4/4 4 Seater
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Joined: Jul 2007
Posts: 26,760 Likes: 425
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,760 Likes: 425 |
Dave, I am sure an air gap would help to insulate this further.
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Joined: Jan 2012
Posts: 14,976 Likes: 1
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jan 2012
Posts: 14,976 Likes: 1 |
Thinking about it you need louvers in the wings 
Richard
1976 4/4 4 Seater
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Joined: Dec 2008
Posts: 21,871 Likes: 168
Roadster Guru Member of the Inner Circle
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OP
Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 21,871 Likes: 168 |
John, yes in pic 3 you can see where I tried to space it out a bit with raised blocks, but not enough......... 
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Sep 2011
Posts: 14,723 Likes: 149
Member of the Inner Circle
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Member of the Inner Circle
Joined: Sep 2011
Posts: 14,723 Likes: 149 |
My cat came fitted with a heat shield. 
Peter ![[Linked Image]](http://bradley.it/public_images/drive.jpg)
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Joined: Sep 2011
Posts: 2,814
Talk Morgan Expert
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Talk Morgan Expert
Joined: Sep 2011
Posts: 2,814 |
My Zetec has a heat shield- not as high tech as Peter's, just mild steel,with an air gap. Gerry.
Gerry
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Joined: Feb 2012
Posts: 5,653 Likes: 4
Charter Member
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Charter Member
Joined: Feb 2012
Posts: 5,653 Likes: 4 |
It works well, but the wing still gets warm, so I may try spacing the shield a bit further from the cat surface.
Aero wings get hot enough to fry an egg 
Martin (Deano)
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Joined: Aug 2013
Posts: 15,794 Likes: 14
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 14 |
With Aldermog it isn't the wing temperature that worries me, it is the heat soak through to the footwell. With a cat on each side and the gearbox in the middle it gets WARM! The passenger can at least move their feet away, the poor old pilot can't. We need these! 
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: May 2012
Posts: 1,639 Likes: 20
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: May 2012
Posts: 1,639 Likes: 20 |
Very neat Dave. Can you attach the thermal mat to the underside of the wing?
Roger
2011 Plus 4
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