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EFV-8 Club Forum / General Ford Discussion / Overheat - 4th of July Parade

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Dads41SuperD

07-05-2014 @ 8:27 AM

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OK - I knew it was going to be a stretch to run in the 4th of July Parade. It was 100 degrees and the parade was painfully slow. I made it 45 minutes before I had to pull out and leave the Blue Star Mothers high and dry.

I am relatively new to this - I've had the car about a year. I want to try the parade again next year. I have done a lot of work on the car, but have not touched the cooling system, which appears to be original. I've read some of the posts on cooling and am getting mixed messages about higher flow water pumps and other upgrades to the cooling system.

Bottom line - Am I asking too much of the old girl?

Old Henry

07-05-2014 @ 11:37 AM

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I've run the 47 sedan in many parades, probably not at 100 degrees but close, and have never overheated.

All of the things you've read about improving the cooling system can help in varying degrees. I would prioritize the remedies as follows:

1. Clean the radiator very good, both inside and out.
2. Install thermostats with higher flow than stock. Stants are better than any others for the 59A engine.
3. Clean the rust from the engine with Evapo-rust.
4. Run as little antifreeze as is necessary to protect from freezing in the lowest expected winter temperatures. Water cools better than antifreeze and propylene glycol antifreeze cools better than ethylene glycol. But don't run totally without antifreeze, even in the summer. It has additives necessary to prevent reduce corrosion and lubricate the water pumps.
5. Use distilled water rather than regular tap water.
6. Add Hyper-lube Super Coolant to the radiator water. It's better than Water-Wetter.
7. The modern replacements for the water pumps are a higher flow. I'm nor talking about Skip's pumps. He does not recommend using his with thermostats. Their flow is only higher without thermostats.
8. Some add fans with more blades, fan shrouds, and/or electric fans. I've never needed any of those to make it through a parade without overheating.

Dads41SuperD

07-05-2014 @ 12:30 PM

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Old Henry
That all makes sense except I don't know where to get a high flow thermostat of what "Stants" are. Thanks for you advise.

Old Henry

07-05-2014 @ 2:15 PM

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It is a Stant 14157 available on line many places including Amazon here: http://www.amazon.com/dp/B000C822YC or at NAPA part number THM 111, or at O'Reilly that sells the same stat as a Murray 4157, O'Reilly part number 2962. Or just ask for the thermostat for a 1990 Subaru Justy.

oldford2

07-05-2014 @ 2:31 PM

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O K. Professor, I have to take you to task. You just told Dads41SuperD that your car has run in many parades close to 100 degrees and has NEVER overheated.(???) Now a parade in hot weather is the worst test for a flathead. So, if your car does not overheat, why have you spent the last two years testing different cures for overheating and posting your results here and on the Fordbarn. Now much of your advice is good but you have to get off this vendetta you seem to have with Skip and Shewman.
PLEASE
John

This message was edited by oldford2 on 7-5-14 @ 2:32 PM

Dads41SuperD

07-05-2014 @ 2:54 PM

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Thanks Old Henry. A few more questions.

1) Should I pressurize - say 4lb cap? My radiator looks to be in good shape, but I will take it down and get it boiled and tested

2) I have looked at some of the ford barn posts. It's unclear where I should put the new thermostat. Mount On the block or on the radiator.

3) I see one reply that shows wires holding the thermostat in place. Do you recommend?

I plan on making these changes and testing this summer on 100 degree day. I am determined to make next years parade.

Thanks

This message was edited by Dads41SuperD on 7-5-14 @ 3:34 PM

Steves46

07-05-2014 @ 3:08 PM

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Hello. In my experience in driving flatheads in Florida during the summertime, I have found that there is one primary thing you must have to keep the temps in-check...airflow. I run Skips high flow pumps with no T-stats and usually maintain temps between 165 & 170 however if I get caught in slow moving traffic or one of the many century long stoplights, within minutes I can watch a steady increase with the temp gauge. At this point I am increasing RPMs and although this helps a little, as soon as steady air is moving again through the radiator, the temps will drop back down. I agree that your radiator should be in tip top condition, but without steady airflow, it will be a challenge...at least here in Florida. By-the-way, very nice looking coupe. Hope you are able to resolve your problem. Steve

Dads41SuperD

07-05-2014 @ 3:27 PM

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Thanks Steve46. I started increasing rpms but may have waited too long. I think I was already losing coolant. I'm still a rookie.

1938cr

07-05-2014 @ 5:12 PM

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Hi Dads41SuperD:

A Parade in 100+ degree heat is a real test for most older cars not just ours. I agree with Steve46, nothing beats airflow. If you want to participate in more parades under similar conditions, I would consider installing an electric fan. You could set it up as a temporary removable fan and harness that you only use for hot days, or install it in a more permanent manor. Speedway sells a 6 volt electric fan in three sizes.

Best of luck!
CR

Old Henry

07-05-2014 @ 8:20 PM

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In response to oldford2's tirade, I meant that I had never overheated in a parade. Climbing 10% grades in hot weather for miles I used to overheat once in a blue moon before I installed the Stant thermostats.

I have no vendetta against Shewman's stats nor Skip's pumps. They've had some creative ideas. At least Skip admits the limitations of his pumps. I don't know what Bob Shewman knows or admits about the limitations of his 59A stats. His major promoter on the Ford Barn (G.M.) certainly has not . . . until maybe now that the facts are known.

What I do have is a passion for truthful representations of what things will and won't do and a totally accurate understanding of such. As I began my recent Ford Barn thread reporting my test of Shewman's stats http://www.fordbarn.com/forum/showthread.php?t=143576 I explained that I didn't really care enough about it to do it. I was satisfied that the Stant's were better and they worked fine for me. But there were others who really wanted to know (including YOU*) and one sent me the Shewman stats to test. So, I did it. That's all.

If you don't want to know the truth. Don't read my posts. They just might hurt.

* "So you have great pictures and measurements but have you tested them?? ... When you have tested them report back." Your post #86 in response to my initial study of Shewman's stats here: http://www.fordbarn.com/forum/showthread.php?t=112889

This message was edited by Old Henry on 7-6-14 @ 9:25 AM

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