Seven Heaters Info

[MV8]

Sharing some information I collected on the heaters used over the years. None interchange without modifications to the car. Left to right, early/90s/late. This info may not be entirely accurate.

 

I've included some pics of my 70's spitfire heater. An early heater could be made using spitfire parts in a new box made of .050 sheet steel or aluminum. The spitfire box has too many openings and the motor/core arrangement is the opposite, so it would be easier and cleaner just to make a new box. The core pipes are longer and curved but they could be shortened to look original or left as-is if the box is installed with the pipes pointing toward the engine.

Some early fans have a bladed fan versus a "squirrel cage" with baffles in the box that should be swapped to the new box or fabricated.

There may be room in the cowl to fit an early mini cooper heater or similar small heater.

 

It looks like defrost/defog was never a function of the heater box, with a wire element bonded to  the windscreen.