Model A Cooing System Flush (E43)

To help address the overheating engine, we took the precautionary measure of back flushing our radiator and backflushing our engine as well 

[@paulmahacek9105]

Show how to install the thermostat.
Having a thermostat will not Crack the head. The thermostat is 160 deg. Once your engine reaches that temp. Water will flow through the cooling system. I use 50/50 green anti-freeze and distilled water. Normal days the temperature gauge runs at 160. During summer Phoenix or Fort Worth hot day over 100. It runs about 180.
Hope this helps and keep doing your wonderful videos

[@herbholmberg4474]

That could definitely be a timing issue. I think i would make sure that was right.

[@herbholmberg4474]

Did you ever figure this out?

[@SGL59]

Adding a thermostat to a model A is a great way to crack a 100 year old block. I would not recommend it.