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EFV-8 Club Forum / General Ford Discussion / Foam in anti freeze

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Posted By Discussion Topic: Foam in anti freeze -- page: 1 2     1933 09-25-2011 @ 1:48 PM reply profile send p.m. Member Posts: 25 Joined: Oct 2009 My 33 runs excellent. If I stay under 45 mph there is no foam in the radiator. When I go a little faster, foam sets up and pushes the water out of the radiator. I did put on Skips water pumps and a new radiator. I feel that if I put in the water pressure regulator in it may stop the foam, but Henry did not so why should I. If I take off two of the four vanes on each pump, would this make less foam? I did check for cracks in the block and looked for a blown headgasket, Had the heads milled and put on new headgaskets. What do you think? BrianCT 09-25-2011 @ 3:42 PM reply profile send p.m. Member Posts: 95 Joined: Oct 2009 I have the same set up and had the same problem. I now run straight water with 'water wetter' in weather above 40 degrees and have no problem. I drain it and save it for next year each Nov. and put in 50/50 antifreeze for storage. 37RAGTOPMAN 09-25-2011 @ 6:53 PM reply profile send p.m. Senior Posts: 1942 Joined: Oct 2009 1933 I had the same problem on my 37, did the SKIPS pumps and,pressure valve,and 1 1/2 year later did not add any coolant, the pressure valve works,and it holds pressure.after sitting all winter in a garage also make sure you coolant system is filled AT operating temp,this will help from foaming, you must have a certain amount of air to get foam. using PEAK. is one of the better to control foaming, hope this helps,37RAGTOPMAN supereal 09-25-2011 @ 8:16 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Foaming in non pressurized systems is normal. In my Model A days, we used Sierra antifreeze, as it tends to produce less foam, and ran just water if the season allowed. Don't modify the water pumps. I don't have experience with Skip's overflow valve, but others report improvement in retaining coolant. If you are losing coolant from the radiator cap, it is likely the gasket should be replaced. Due to the roads, etc, not many drove faster than 45, so there were few complaints back when you car was new. drkbp 09-26-2011 @ 5:23 AM reply profile send p.m. New Member Posts: 180 Joined: Aug 2010 1933, Early water pump in head engines do that and any good water pump will do exactly what you describe. Your car came with thermostats when new. This spring I posted a parts book drawing of the types used in the '33-'36's. None are listed for 1932. Any will work but I run two of the same in my '35. Ken in Texas 37 Coupe 09-26-2011 @ 7:01 AM reply profile send p.m. Member Posts: 361 Joined: Oct 2009 37 RAGTOPMAN your radiator must be different then mine.No way you should need or use the Skips valve when you can use a 4lb pressure cap at least on my radiator and most 37 I have seen,mayby earlier ones were different. supereal 09-26-2011 @ 10:16 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Skip's valve is designed to prevent coolant loss out of the overflow. It does provide some radiator pressure, but likely isn't enough to supress foam. Modern cars use an overflow bottle, but older cars don't have the correct radiator neck to accomodate The required cap. 37RAGTOPMAN 09-26-2011 @ 5:22 PM reply profile send p.m. Senior Posts: 1942 Joined: Oct 2009 37COUPE I never found a 37 radiator 4 lb cap[ is that a original FORD 4 lb cap?] that would fit my neck,the modern ones as far as I know do not fit,so I sealed it off at the top and put in a SKIP, overflow pressure valve and it maintans pressure OVER THE WINTER,which should tell you something, also been driving a MODEL A since 68 and do not have ANY foaming PROBLEMS. about 30,000 miles.so do not know , what they think might be happening. air has to mix with coolant to have foam,so was not raditator was not full to start with, if you have your car running and are looking at the coolant and it is foaming you have other problems,you should fill the radiator when warm, using distilled water with out chemicals that is in town water,,and MIXING the coolant correctly ,50-50 this is all I use ALL YEAR LONG. when driving my 37 on the highway at 60 it runs a operating temp, drove it to the NATIONAL V8 MEET in SARATOGA SPRINGS in NEW YORK STATE, this SUMMER almost 800 miles and NO COOLANT ADDED,and over the mountains up and down, though VERMONT,and NEW HAMPSHIRE.from Maine. so this PRESSURE VALVE works for me, and for the $28.00 is well worth it, call Skip and ask him, my 3 cents 37RAGTOPMAN, 37 Coupe 09-26-2011 @ 6:59 PM reply profile send p.m. Member Posts: 361 Joined: Oct 2009 The pressure cap I am using on my 37 radiator is the 4lb one most all vendors sell,like Macs it is Ford part#41A-8100-A. Mayby yours is an earlier one that has a different neck. If your 3lb check valve holds pressure over the winter in your radiator that is pretty incredible,pretty deep for my loafers, but pretty incredible. 37RAGTOPMAN 09-27-2011 @ 5:25 AM reply profile send p.m. Senior Posts: 1942 Joined: Oct 2009 37coupe I was amazed myself that I heard a pop. when removing the radiator cap. I am using a orginal cap,that I made seals for,, so it will not leak pressure out. as Skip suggested. and it works for me, I will have to check out MAC's. I usually do not buy aftermarket parts if possible. I like the original for working and fitting, I used to restore cars and grew a dislike for the new imported parts. so stay away for the most part. my 3 cents 37RAGTOPMAN take care of your loafers, I enclosed a picture of my 37

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