> Joe,
>
> The temperature of the exhaust can vary quite dramatically with ignition
> and valve timing. Ignition timing is easy to check, valve timing can be a
> function of the cam profile. When I fitted a fast road cam the temperature
> of my exhuast manifold increased to the extent that the plastic radiator
> overflow tank which had been fitted to the inner wing melted. It had been
> in place for several years with the old motor without ill effect.
>
> One less expensive cure may be to fit and air dam below the radiator. This
> has the effect of creating a vacuum under the car which can suck the hot
> air down and out. A heat shield could also be put in place between the
> exhaust and the firewall. Do you have louvres in the tops of your bonnet
> (hood). Some cars came without these which to my mind would cause a build
> up of heat in the engine compartment.
>
> Cheers
>
> Steve Moore
>
>>Thanks to all for the manifold coating tips, especially
>>Art who reminded us to do the inside as well.
>>
>>But, is this the most bang for the buck to reduce that
>>incredible heat? My particular 4/4 is a regular lobster
>>pot when cruising at 60mph on trips over 50 miles with
>>75F average outdoor temps.
>>
>>It sounds like some of the other Mogs don't get that kind
>>of heat, with or without the jet coat. There are no exhaust
>>leaks to put heat straight on the firewall or floorboards
>>(had that happen once and melted my sneaker to the floor
>>like a cheeseburger). It's just that I have this extraordinary
>>engine compartment heat.
>>
>>It's difficult to put insulation inside the passenger
>>footwell with that antique heater element in the way.
>>I don't want to disconnect it for fear it'll fall apart.
>>
>>Regards,
>>
>>"Hot and Bothered"
>>
>>Joe DeLuca
In reference to the heat, have you made sure that the valve to the heater
has been turned off at the engine? That in itself would roast the poor
passenger!
Tony
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