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EFV-8 Club Forum / General Ford Discussion / 46 Still running HOT

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Posted By Discussion Topic: 46 Still running HOT -- page: 1 2     supereal 10-13-2010 @ 12:12 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 SID: Take a hammer and tap the bottom of your muffler. If you get a "thud" instead of "tin can" sound, I'd bet on a muffler full of crud. Any restriction in the exhaust system can cause engine overheating. Fat40 10-13-2010 @ 6:12 AM reply profile send p.m. Member Posts: 15 Joined: Oct 2009 Thanks to all of you for all your infomation,I forgot I don't need the over flow valve from skip, when I run the new walker Radiator because of it has a 5-lb pressure cap.I am going to drive it again this week end and see what happens. SID shogun1940 10-12-2010 @ 7:21 PM reply profile send p.m. Member Posts: 464 Joined: Feb 2010 buy a laser temperature gun and you can use it to check for your hot spots, I used to use oakite as cleaner in my youth to clean out the cooling system. TODAY I would probably use dupont rad. flush. The heat gun will tell you if the water is flowing through every thing evenly. good luck 37RAGTOPMAN 10-12-2010 @ 5:08 PM reply profile send p.m. Senior Posts: 1961 Joined: Oct 2009 Just to let you know, I always lost coolant, I have SKIPS pumps, and installed his valve, and all summer never added coolant, its worth a try, just follow his instructions, fill it when hot to the top, you need all the coolant you can get in the system, leaving it low in the tank, provides less coolant in your system.whats that about?, just run the engine till it reaches normal temp and fill it, a clogged exhaust will also make it run hot, my 3 cents worth, 37 RAGTOPMAN an KEEP on TRUCKIN,,,!!! don1950ford 10-12-2010 @ 1:18 PM reply profile send p.m. Member Posts: 6 Joined: Oct 2009 Sid, if you have not already done so, i would highly recomend you call Skip and see how he can assist you with your cooling problem as you are running his high volume pumps. don Old Henry 10-12-2010 @ 10:22 AM reply profile send p.m. Senior Posts: 738 Joined: Apr 2010 Amen to SuperReal. I didn't know what the overflow valve was but if it's like a coolant recovery system, true, you don't need that. Just keep your coolant down 2-3 inches from the cap to leave air space to compress when the coolant expands and you'll never lose any coolant; unless, of course, you totally boil over. But, that really shouldn't happen with your set up. BTW the standard stock radiator cap is only 4 lbs., not the 15 pounders modern cars use. Even with that low pressure limit, I don't lose coolant. Still Old Henry supereal 10-12-2010 @ 10:04 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 You don't need the overflow valve on a '47. If it is kicking coolant out the overflow, there is a problem that needs to be repaired. Installing such a valve treats the symptom, not the cause. My '47 will expel coolant until it gets to the bottom of the radiator filler, then never does it again. I run a 60-40 mix of Sierra antifreeze, and when it is heated, it has to expand. Thus, the excess is pushed out past the 7 pound cap. The valve is useful in a non-pressurized system. The purpose of an exhaust system valve is to force exhaust thru the passage under the carb to help warmup. There are two kinds: the one with the weighted arm and thermostatic spring, and another that looks like a "duck bill" that is inside the pipe. It has bimetal wings that are supposed to pull back as the system gets to opperating temperature. Most of the flapper kind eventually rusted in place, and if not fully opened, will restrict exhaust flow and performance. Both should be removed and tossed out. A common cause of poor performance and overheating is a muffler jammed with carbon. We have seen them so plugged that they weighed as if they were made of rock. Old Henry 10-12-2010 @ 7:14 AM reply profile send p.m. Senior Posts: 738 Joined: Apr 2010 Sounds like your temperature and oil pressure are just like mine has been on my '47 for the 51 years we've owned it. Not too much to be alarmed about. Still Old Henry Fat40 10-12-2010 @ 6:27 AM reply profile send p.m. Member Posts: 15 Joined: Oct 2009 I have not installed the over flow valve from SKIP,will do so today. This car was a two year frame off restoration,am trying to work the bugs out. I got the engine from a close friend who had in a restored 46 and it was completly rebuilt.When I said it was running hot it did not boil over,but was near to the top. When I left in the moring to go to the show the temp outside was 60 the car ran in the middle of the temp gage and carried 30 pounds of oil pressure,on the way home it has maybe 10 pounds on the way home.The car has 50-50 antifreeze and no thermostats,distilled water,one bottle of water wetter. SID 37RAGTOPMAN 10-11-2010 @ 5:27 PM reply profile send p.m. Senior Posts: 1961 Joined: Oct 2009 FAT 40. did you install the overflow valve from SKIP.,? This is a MUST DO,when using his pumps,also take the thermostats out, and fill the radiator when warm, follow the directions, it might be that the coolant is low. is it foaming ? belt ajusted correctly, loose belts will cause the engine to run hotter, when slipping. lets hear how you made out,37RAGTOPMAN. an KEEP on TRUCKIN,,,,

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