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Sep 21, 2012 9:56 am
Sep 21, 2012 9:56 am
Subject: Re: Water Pump Modification
Heat management in the Rapide can be a real issue, especially when stationary in traffic, becasue air flow is minimal and the side wing vents are blocked by servos etc. So the under bonnet area acts as a heat accumulator. During recent trips I have driven the car with the bonnet up on the first catch which enables hot air to exit at the base of the windscreen and this does seem to make a difference. So finding an exit for the hot air is just as important as fitting an addirional fan.
Also I've been trying to work out how an electric fan in a TR4 can add 10bhp to the engine output, but can't make the maths work! Given that an electric fan which draws say 30 amps is less than a half horsepower device.
Heat management in the Rapide can be a real issue, especially when stationary in traffic, becasue air flow is minimal and the side wing vents are blocked by servos etc. So the under bonnet area acts as a heat accumulator. During recent trips I have driven the car with the bonnet up on the first catch which enables hot air to exit at the base of the windscreen and this does seem to make a difference. So finding an exit for the hot air is just as important as fitting an addirional fan.
Also I've been trying to work out how an electric fan in a TR4 can add 10bhp to the engine output, but can't make the maths work! Given that an electric fan which draws say 30 amps is less than a half horsepower device.