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03-21-2017, 01:05 PM | #1 |
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Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
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36 Roadster Cooling
This is a follow up on the two 36's I removed the radiators from a
few weeks ago. Had the radiator tank removed and the radiator shop rodded out the tubes. Before we had over heating over 50 MPH due blockage. Both radiators are back in will put water in the phaeton tomorrow. The other day I put 4 gallons of vinegar in the roadster. got it good and hot. let sit a few days, drained, flushed and refilled. Today drained and flushed with running hose, both drains open for 1/2 hour. Closed drains with water a little lower than a gallon. Added a gallon of Prestone, ran a few minutes and added a bottle of Barrs heavy duty copper flake block sealer. Ran 15 minutes and added a bottle of Water Wetter. The temperature varied with a high of 160 the entire time. It stabilized at 156 after about an hour and a half. Most run time was at a engine speed of about 30 MPH. Slowed to fast idle and stayed at 156. Put a house fan in front of the grill and ran 15 minutes checking the heads where the water pumps bolt on and stayed at 145. Running with a house fan duplicates forced air at 40 MPH It looks like the problem is solved. I might add there is NO 3 lb valve on the over flow, water was filled all most to filler cap. The over flow has a 1/4" rubber hose to an over flow bottle and NO coolant was pushed into the bottle. Outside temperature was a little below 80. Next a drive test and expect it to run the same as the static test. Engine has Skips high flow pumps. Skip also reset the distributor on his Ford~Heyer strobe machine to the original Ford specs, rebuilt the coil and tested the condensers on both cars. The roadster started up on about 2 turns cold and 8 or 10 times after it was hot started on the first engine turn. Tomorrow we will see how the phaeton works. G.M. Need to add another bottle of water wetter tomorrow, 1 bottle is not enough for 22 quarts. I only had 1 bottle this morning.
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03-21-2017, 03:25 PM | #2 |
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Join Date: Mar 2014
Location: Jacksonville FL
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Re: 36 Roadster Cooling
Sounds like you are well on your way, good to hear. Keep them running down the road and thanks for sharing!!
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03-21-2017, 07:11 PM | #3 |
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
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Re: 36 Roadster Cooling
Just curious. Was this with or without thermostats? It seems like you have the cooling problems well in hand. Wouldn't it be better to run it a little hotter for everyday driving? Either install thermostats or if they are already in, changing them to 180's. It may not be exactly the same, but the guy who rebuilt the engine in my Corvette, put in a 160 thermostat, and I had problems with plug fouling until I changed it out for a 180. (the problem was exacerbated because the plugs specified OEM for the engine are too cold for regular driving.)
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03-22-2017, 07:15 AM | #4 | |
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Join Date: May 2010
Location: Florida and Penna.
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Re: 36 Roadster Cooling
Quote:
flow. We want to know the coolest the engine will run. You can't do much to make it run cooler other than more forced air. Thermostats do nothing to cool an engine, they only make it run hotter. Once the coolest temp is found then we can adjust the running temperature to whatever we want. In cooler climate locations I prefer 180 stats, but the stats must have large flow openings so the flow through the engine and radiator is the full flow of the pumps and not cut down by any restriction. I'm located in SW Florida and the temperature seldom gets below 80 degrees. Although I do have Fords with Bob Shewman's full flow stats that run between 178 and 182 I doubt I will put stats in the 2 36's. We are getting almost twice the flow with Skips pumps and don't want to do anything to cut it down. G.M.
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03-22-2017, 02:43 PM | #5 | |
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Join Date: May 2010
Location: Florida and Penna.
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Re: 36 Roadster Cooling
Quote:
hour at an engine speed of about 25MPH. Temp got to 158 for 10 minutes. Put fan back in front of grill and it came down to 146. Slowed speed to fast idle and the temp kept coming down and stayed at 126 for 10 minutes until we shut it down. So it looks like the 1 bottle of Water Wetter is not enough for the 22 quart capacity. these are lower temps than yesterday and it was a few degrees warmer today. The only change was the Water Wetter. I have seen the temp drop the same way about 15 years ago when testing Purple Ice for the first time. It took 15 minutes of running before the temp dropped. I did have 2 bottles of PI as they recommended. Different product same results. Skip happened to stop by this morning before we started he was interested so I let him take the temps. Both sides stayed within a few degrees of each other. He was surprised we didn't get any coolant in the recovery tank. The free flow is a result of the radiator being rodded out. G.M.
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03-22-2017, 03:28 PM | #6 |
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Re: 36 Roadster Cooling
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03-22-2017, 07:09 PM | #7 | |
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Join Date: May 2010
Location: Florida and Penna.
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Re: 36 Roadster Cooling
Quote:
upper radiator hose. It would be a blur. With the radiator cap removed and the coolant about 1/2 above the top of the tubes you can look in from the front and towards the drivers side and see the water rushing in from the hose and drivers pump. You can even shoot the laser temperature gauge on the incoming coolant and see the change in temp. I don't run with the coolant down that low but have drained it down to see the flow. When it's full you see some motion of coolant but not the rush you see when the coolant is low. G.M.
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