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07-05-2010, 05:01 PM | #21 |
Senior Member
Join Date: May 2010
Location: Wilmington, Delaware
Posts: 240
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Re: Overheating in parade - Thoughts??
Fan tension is good and fan spins normally. Water pump and fan turn freely when belt is disconnected (No siezed bearings - which I would have heard and smelled.)
Just finished a test drive in 95 deg outside temp. All seems normal. Idled at stop lights - no coolant spillage. Ran and sounded like a finely-tuned Singer sewing machine. In the garage, high air volume is being pulled through radiator and the water in the top of the radiator is churning and moving as I peek inside (NO stuck thermostat). I.R. thermometer "mapping" of front of radiator over a 1/2 hour of medium idle showed generally 15-20 deg. hotter temp as I moved toward the driver's side of the rad. And, naturally, the temperatures were slightly hotter at the top than at the bottom. I'll keep driving and keep monitoring the situation. AND NO MORE ONE-HOUR IDLING IN 95 DEG. TEMPS - at least until the engine is good and run-in and "loose". It probably is all due to a tight "new" engine - and MAYBE a marginal radiator. Thanks again, Earle Compression test maybe tomorrow. |
07-05-2010, 05:09 PM | #22 |
Junior Member
Join Date: May 2010
Location: Parker, Texas
Posts: 4
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Re: Overheating in parade - Thoughts??
Earle I had a similar problem last year at a parade here in Dallas, Hot, hot, hot and so was my Slant. Engine about the same age miles a little lower. A new Brassworks 10 fin did the truck and the engine continues to run better and better!!
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07-05-2010, 05:26 PM | #23 |
Senior Member
Join Date: May 2010
Location: Newburgh, NY
Posts: 222
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Re: Overheating in parade - Thoughts??
Thanks Michael - I see your point, although I would still leave out the thermostat (my preference, of course). As inefficient as it may seem, I'd rather let my engine take its time to warm up on a cold day than worry about restrictions in the cooling system on a hot day. Just my way of doing it Henry's way I guess. My engine exhaust manifold warms up the intake manifold in less than a minute even on cooler days, and within 1/4 mile I'm running at the lean setting.
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07-05-2010, 10:33 PM | #24 |
Senior Member
Join Date: May 2010
Location: Boston, Mass
Posts: 358
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Re: Overheating in parade - Thoughts??
try riding in a steel box I was pushing 212 degrees and overheated I felt like a egg Frying on a skillet BIG MIKE
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07-05-2010, 10:41 PM | #25 |
Senior Member
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Re: Overheating in parade - Thoughts??
Im agree, I also run it a little rich for parades. f stopped for periods I shut it down as well.
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07-06-2010, 05:44 PM | #26 |
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Join Date: May 2010
Location: Newburgh, NY
Posts: 222
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Re: Overheating in parade - Thoughts??
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07-07-2010, 12:55 AM | #27 |
Senior Member
Join Date: May 2010
Location: Manawatu, New Zealand
Posts: 1,416
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Re: Overheating in parade - Thoughts??
The worst day of my life was taking my veteran car in its first parade . No water pump ,Thermosiphon only and an inefficent fan. At more than 10mph the cooling is fine - I informed the car in front of me that we needed to travel at this speed . Unfortunately he got so busy enjoying the parade that he forgot about 10 mph -at times he was stopped playing to the crowd! I'm stuck behind him The motor meter is as high as it will go and steam is coming out under the hood . Bear in mine this ain't a model A engine it's a 1910 engine for which I have very few spare parts. Unfortunately the crowds on both sides meant that there was nowhere to get out of the parade -In the end I drove through the crowd to get out. Fortunately no aparrent damage to the engine (or the crowd) but very scarey and not enjoyable at all. I have now fitted an electric fan for parades only -Karl
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07-07-2010, 01:49 AM | #28 |
Senior Member
Join Date: May 2010
Location: Minnesota
Posts: 198
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Re: Overheating in parade - Thoughts??
sometimes overlooked is the correct paint on the radiator. just something else to keep in mind.
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07-07-2010, 02:32 AM | #29 |
Senior Member
Join Date: May 2010
Location: Santa Rosa, CA
Posts: 1,279
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Re: Overheating in parade - Thoughts??
While not strictly a cooling problem, I agree with Benson above about holding in the clutch for very long and its wear on the rear main thrust bearing. Its only lubrication is seepage from the rear main and is one reason why I do not have a "modern" rear main seal. (The other reason is that a properly installed rear main will not leak.) When approaching a light or other stop, I will usually slide shift into neutral without using the clutch and leave it there until it is time to move.
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