Earlier I mentioned my plan to measure temps of various engine components using an infrared sensor. I just got my first Model T and hope the cooling system is circulating properly. Your thoughts will be appreciated.
After one mile including mild hills:
89' ambient temp
136' radiator temp
168' front of head
189' rear of head
312' exhaust manifold
Motometer was about 1/3, which is below "Summer Average" labeled circular window.
Looks OK to me. If you check radiator top and radiator bottom you should see a considerable disparity.
If you can grab the pipe running between the bottom of the radiator and the engine block, your radiator is cooling properly. If it's too hot to hold, you're not cooling properly.
Does your car boil? If not, you're fine.
Ken in Texas
Aren't those head temperatures a bit cool for proper combustion in the cylinders? I thought water temps. In the head right below boiling were more appropriate. Someone fill me in here!
An infrared sensor is a tool all T owners should have. The laser part of mine can be pointed at a small part of a T or any other car with accurate temperature readings fast. I also use mine checking drafts on my home and shop that otherwise you are guessing.
Michael, there can be a couple ways to take a look at engine efficiency. I've always heard the engine will "run" better with the temp at the top of the safe running zone. And that would be just below boiling.
The only concern is that the engine temp will often rise a little after its shutdown. Now keep in mind this is what I've read and are possibly nothing more than the opinions of others.
I like to run my engines as cool as I can get them. I feel I'm going to cause less wear and tear on the engine and as long as I have the power I need and it's running smooth it's fine for me.
And in the final analysis you'll have to find someone with a greater engineering background than I'll ever have. I just go by what seems sensible to me.
Thank You you all. I guess it is circulating and I will continue to monitor temps.
On the Montana 500 car I ran 190-200 water temp and about 1260 F for exhaust temp.
Gene, I'm curious, where exactly did you obtain the reading for the exhaust temp? That sounds really hot. Is that considered normal? I picture the manifold glowing, at least dull red? Anybody else?
Did you ever run your T a night with the floor boards removed? My exhaust manifold always glowed at least a dim red. The more retarded your spark, or the faster I drove the brighter red the manifold would get. I lived in the country way back when and I often (usually) drove with spark and throttle levers as close together in the down position that I could get them.
Thanks, Hal, I have driven 3 other folks T's so far.
Mine still has a ways to go before it's running. For what you describe, that might explain the so called 'droop' of exhaust manifolds I've seen mentioned? As I have read suggestions on how to straighten such, It did make me wonder how they became 'drooped' in the first place. Agreed?
Gene, You are as hot as you want to go. On the drag boats and funny cars we like that temp for max power. At 1275-85 the pistons want to melt. Scott