Under bonnet heat shield
Discussion
I've just started doing an Allan Howell hinged bonnet conversion using one of his DIY kits. It's interesting now see everything that was previously hidden from view. One thing I've noticed is that the bonnet has no heat shield material and I think the car must have been built without it being used. Did TVR not use any form of protection especially over the exhaust area? I've seen photos of other cars with it fitted - is it necessary? There is no sign of any heat damage to the bonnet moulding or the paintwork.
I suffered slight blistering of the paint on the bonnet above the exhaust.
Following a re-spray, most of it has been taken out.
I believe, the blistering is caused when the car is sitting in stop-go traffic with low airflow through the engine bay...Heat off the cats/exhaust builds up and just cannot escape.
My manifold is now zircotec'ed, but I have used some heat shield under the bonnet as well. I got mine from Neil at SW Performance parts. It's the old school foil backed glass fibre mat. It's stuck on and seems to do the job.
Nick
Following a re-spray, most of it has been taken out.
I believe, the blistering is caused when the car is sitting in stop-go traffic with low airflow through the engine bay...Heat off the cats/exhaust builds up and just cannot escape.
My manifold is now zircotec'ed, but I have used some heat shield under the bonnet as well. I got mine from Neil at SW Performance parts. It's the old school foil backed glass fibre mat. It's stuck on and seems to do the job.
Nick
BobE said:
I've just started doing an Allan Howell hinged bonnet conversion using one of his DIY kits. It's interesting now see everything that was previously hidden from view. One thing I've noticed is that the bonnet has no heat shield material and I think the car must have been built without it being used. Did TVR not use any form of protection especially over the exhaust area? I've seen photos of other cars with it fitted - is it necessary? There is no sign of any heat damage to the bonnet moulding or the paintwork.
Contact Allan again as he has fitted a heat shield to his own car and is fitting one to ours in the new year. I know it should have been done at the time he did the 'Howell Hinge' conversion.His conversion really is a good professional job, one that I'm sure would have been adopted ...... if only.
Probably too late Bob, but as result of having Allan do my bonnet conversion he recommended I get some heat shield - www.thermalvelocity.co.uk 1m x 1m £39.95 + vat
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