Cockpit Heating

Hi Sean

Search online, look for heat exchangers, they come in all sizes.  They are much less cost that a used car heater core.   An Amazon search online has tons available.  

Cheers

If you buy something called a heat exchanger, be sure you're getting a water-to-air type.  Many are dual-circuit water-to-water type and are not open to airflow.  There are lots of cheap heater cores on Amazon as well, but the problem with online purchases is that they're all listed by car make and model, not by dimensions.  Getting one in person allows you to measure what you're getting and know that it will fit.

If I were buying anything from an auto wrecker, I'd look for a late model car that had taken a rear end hit.  Anything from an older car may have had old, acidic coolant sitting in it for years, and anything from a car that took a front end crash could be damaged.

If Sling had not put it higher than the rest of the cooling system it would not be any issue to bleed, or perhaps given a bleed screw at the highest point, mind you who wants to bleed coolant under the avionics rack.

A suggestion from another Forum;

Ducting hot air from behind the radiator

Has merit as warm air would be fresh, with little if any chance of pollutants like CO, Fuel, Oil.

Even noise increase may be less than from an exhaust system heater.

Does no require any additional power (fan)  or changes to existing coolant reticulation.

Ducting would still have to go through the firewall - not great. 

Relatively light weight - minimal change to W&B

A pilot controlled air diversion box would have to be installed  ie hot air into cockpit or hot air dumped .😈

I read where one manufacturer (TL Sport???) has the cabin heat intake immediately behind one of the radiators, harvesting heat from the engine and avoiding possible CO contamination? If true, makes sense to me.