hdleaksoil
Member
1936 ford runs hot if I drive it 50mph an above . 45mph an below runs cool !!! what is wrong with it ?? Or do I need to put a 6 cylinder Chevrolet in it to run above 45 mph ??? thanks len
1936 ford runs hot
- Thread starter hdleaksoil
- Start date
VeryTangled
Well-known member
Hi Everyone. I'll jump in...
Not enough coolant?
Wonky thermostats.
Water pumps not working up to snuff.
Radiator not working correctly.
Splash pans missing causing more air to go around radiator.
Timing.
Can you give a more complete description of your '36's engine, intake, distributor, etc? I hope that would give more focused suggestions.
Not enough coolant?
Wonky thermostats.
Water pumps not working up to snuff.
Radiator not working correctly.
Splash pans missing causing more air to go around radiator.
Timing.
Can you give a more complete description of your '36's engine, intake, distributor, etc? I hope that would give more focused suggestions.
rockfla
Well-known member
@hdleaksoil
There is a lot of missing information here!!! Is the car new to you? Has the radiator been properly flushed and pressure checked, the above post hit on a lot of areas of concern!!!!!! IF new to you, have you flushed both the block & radiator??? Can you remove the radiator cap and see a good flow of water through the upper tank at idle or slightly increased RPM?????
There is a lot of missing information here!!! Is the car new to you? Has the radiator been properly flushed and pressure checked, the above post hit on a lot of areas of concern!!!!!! IF new to you, have you flushed both the block & radiator??? Can you remove the radiator cap and see a good flow of water through the upper tank at idle or slightly increased RPM?????
alanwoodieman
Well-known member
what year engine? rear end ratio? both of these can be added to questions that need to answered before help can be given.
Kurt in NJ
Well-known member
Most likely the radiator is partially clogged, drain down the coolant enough to see the tops of the tubes, see how many are clogged, on mine 1/2 were
You have the questions to solve your problem. This is the problem Ford
had since these cars were new. The problem is at over 50 MPH the water
backs up in the top tank. The pumps as bad as they are start pushing
water out the over flow tube. There are 144 radiator tubes that are 2
feet long with some old material lining the insides of them. The over flow
comes off the top tank and at 50 MPH the water takes the path of least
resistance, out the over flow tube. Then you are low on water and the
engine runs hot. To test my theory put about 3 feet of clear plastic
flexible tubing about 5/16" ID from the hardware store on the bottom
of the over flow tube. Bring it on the drivers side near the front of the
frame. Loop it up and hang it from the radiator support rod under the
hood. Take a spring loaded wood cloths pin to pinch it closed. Fill the
radiator up near the cap. Make sure the cap is tight and seals good or
water will come from the cap. Drive the car and watch your temp gauge.
With the radiator FULL of water the car moving forward at least 25 MPH it
should run cool. The fans in these cars are not very good so it takes the ram
air into the radiator to cool it. If it gets over 200 remove the cloths pin. If
there is a compression leak into the cooling system the pressure should
open the cloths pin to release the pressure MAYBE, this is not a precision
relief valve. If this works Skip Haney makes a 3 lb pressure valve that
attaches to the bottom of the over flow tube. Let me know the results. G.M.
had since these cars were new. The problem is at over 50 MPH the water
backs up in the top tank. The pumps as bad as they are start pushing
water out the over flow tube. There are 144 radiator tubes that are 2
feet long with some old material lining the insides of them. The over flow
comes off the top tank and at 50 MPH the water takes the path of least
resistance, out the over flow tube. Then you are low on water and the
engine runs hot. To test my theory put about 3 feet of clear plastic
flexible tubing about 5/16" ID from the hardware store on the bottom
of the over flow tube. Bring it on the drivers side near the front of the
frame. Loop it up and hang it from the radiator support rod under the
hood. Take a spring loaded wood cloths pin to pinch it closed. Fill the
radiator up near the cap. Make sure the cap is tight and seals good or
water will come from the cap. Drive the car and watch your temp gauge.
With the radiator FULL of water the car moving forward at least 25 MPH it
should run cool. The fans in these cars are not very good so it takes the ram
air into the radiator to cool it. If it gets over 200 remove the cloths pin. If
there is a compression leak into the cooling system the pressure should
open the cloths pin to release the pressure MAYBE, this is not a precision
relief valve. If this works Skip Haney makes a 3 lb pressure valve that
attaches to the bottom of the over flow tube. Let me know the results. G.M.
Last edited:
VeryTangled
Well-known member
One thing I just thought of... If this is a stock enough '36 then the temp gauge is a fluid sight type.
When you say it's hot, is it spilling fluids or is it 'hot' on the dash, or are you going off some other indication?
When you say it's hot, is it spilling fluids or is it 'hot' on the dash, or are you going off some other indication?