How hot is too hot
 

I know these flatty's like to run on warm/hot side. In traffic I see my temp hitting 190. Which I believe. Is ok. But at what point or temp should I say time to pull over and wait for cool down?

Re: How hot is too hot
 

190 is great in traffic, as far as I'm concerned.

200-210 is getting real hot. Thing is, once you shut down it'll go up another 10 degrees without the pumps moving water.

Just my thoughts.

Re: How hot is too hot
 

The manual says as long as it's not boiling.

Re: How hot is too hot
 

Roughly...
Water boils @ 212
Antifreeze @ 265

265 degrees sounds a little high :)

Re: How hot is too hot
 

Hi Everyone, Tinker, remember that 265 degree number includes a 15psi pressure cap. Unpressurized it's about 223. Add 3psi per one pound of pressure.

Re: How hot is too hot
 

Very true Jeff.

Some more discussion on flathead temperature ...
http://www.fordbarn.com/forum/showth...3954&showall=1

Re: How hot is too hot
 

Ok so if I'm reading this right, at 210 I should pull over and open hood. Logic is 210 + 10 rise after shut off = 220 danger zone - as my cars are no pressure caps.

That right?

Re: How hot is too hot
 

Start by checking your gauge to be correct. Use a thermal gun to verify the gauge and go from there. I have seen lots of gauges to read much higher than true Temp.

Re: How hot is too hot
 

I just re-read that one again. It's a true classic on the subject.