How much space between gas tank and floor? Options

[914turboford]

How much space is there between the gas tank and the floor on a 914? Due to the high cost of fuel we are planning on bringing our 914 out of winter hibernation to lessen our dependance on my wife's Blazer. Since the car is liquid cooled I am thinking about using heated air coming from the radiator to heat the car. I want to put a duct running from the front trunk to the interior foot well passing under the fuel tank. Does anyone know how much room there is?

Brian Roth

[neo914-6]

get a renegade heater system that actually works

Last I checked it was in the >$350 range and you had to have their new water pump. Adding a heater core increases the chance of air pockets, ask Paul Smrz. I've read where someone fabricated heat exchangers similar to the stock to utilize the exhaust heat. You could wire an electric heater made for cars (much like a hair dryer). Chris 914n6 in Las Vegas had a simple heater solution and was working on a heat/cold system awhile back. I don't think the radiator heat will be sufficient unless it's well contained . You should capture the heat in the hose from the engine somehow.
Good luck!
Felix