The Ford Barn

30-9 · 06-07-2016, 01:00 PM

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?

Tinker · 06-07-2016, 01:16 PM

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.

4dFord/SC · 06-07-2016, 01:22 PM

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

Tinker · 06-07-2016, 02:34 PM

Roughly...
Water boils @ 212
Antifreeze @ 265

265 degrees sounds a little high

VeryTangled · 06-07-2016, 02:52 PM

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.

Tinker · 06-07-2016, 03:09 PM

Sponsored Links (Register now to hide all advertisements)

Very true Jeff.

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

30-9 · 06-07-2016, 07:42 PM

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?

roundvalley · 06-07-2016, 07:57 PM

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.

Old Henry · 06-07-2016, 08:39 PM

Quote:

Originally Posted by Tinker

Very true Jeff.

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

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

06-07-2016, 01:00 PM	#1
30-9 Senior Member Join Date: Aug 2014 Location: MA Posts: 888	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? __________________ Thanks - 30-9 1939, 1940

06-07-2016, 01:16 PM	#2
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,063	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.

06-07-2016, 01:22 PM	#3
4dFord/SC Senior Member Join Date: May 2010 Location: Columbia, SC Posts: 1,579	Re: How hot is too hot The manual says as long as it's not boiling.

06-07-2016, 02:34 PM	#4
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,063	Re: How hot is too hot Roughly... Water boils @ 212 Antifreeze @ 265 265 degrees sounds a little high

06-07-2016, 03:09 PM	#6
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,063	Re: How hot is too hot Sponsored Links (Register now to hide all advertisements) Very true Jeff. Some more discussion on flathead temperature ... http://www.fordbarn.com/forum/showth...3954&showall=1

06-07-2016, 07:42 PM	#7
30-9 Senior Member Join Date: Aug 2014 Location: MA Posts: 888	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? __________________ Thanks - 30-9 1939, 1940

06-07-2016, 07:57 PM	#8
roundvalley Senior Member Join Date: May 2010 Location: Idaho Posts: 150	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.