Early Ford V-8 Club Forum

EFV-8 Club Forum / General Ford Discussion / foam in the coolant

Reply to Discussion | New Discussion << previous || next >>

Posted By Discussion Topic: foam in the coolant -- page: 1 2     Kens 36 03-06-2011 @ 7:41 PM reply profile send p.m. Member Posts: 340 Joined: Oct 2009 Fredeick, Skips 3# valve is NOT intended for your '50. It is for earlier models without a pressure cap. Your '50 should have a working 4# pressure cap. A 7# can also be used, but the 4# is the correct cap. Ken supereal 03-06-2011 @ 8:34 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 The standard cap for the '50 is the B2AZ-8100-F, 7#. Be sure you have the correct cap, and not the one for cars that have an overflow bottle. There is a difference in filler diameter between some car and truck radiators that requires the correct cap be fitted. This message was edited by supereal on 3-7-11 @ 8:58 AM Kens 36 03-08-2011 @ 9:18 AM reply profile send p.m. Member Posts: 340 Joined: Oct 2009 Bob, Will all due respect, the original cap installed on the '49 and '50 Fords was the 4# 26H 8100-B. The 7# cap came out for the '51 Fords and its number was 1M 8100-A. Ken supereal 03-08-2011 @ 10:22 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 My books show the 1M-8100 as a 7# cap for the 49-54 Merc, and any 49-54 Fords with the 1" neck instead of the 3/4". I didn't find the 26H in my books but, admittedly, most of my parts references predate those years, except for trucks. drkbp 03-08-2011 @ 11:05 AM reply profile send p.m. New Member Posts: 180 Joined: Aug 2010 1933, You must not have the thermostats in the upper radiator hoses. If you do, I don't see how it would foam up at 50 mph unless you have other problems. Your radiator is new so I will assume it's no thermostats as no one has mentioned it and that is the easy fix, maybe. I had a similar problem years ago. I was running without thermostats in my '35. No problem running around town but on the highway we would get up to 55-60 mph and that V8 was churning. 4.11 rear end is what mine came with but 3.78 would be about as bad. Mess and got tired of that. I put thermostats in and no further problem. Water pumps push the coolant too fast at speed and churns it up and they blow the coolant out. A restrictor is what it really amounts to when at higher speed. I found a set of two new ones and they have been in the car for at least 15 years. Helps the engine warm up a little quicker too. I drove it to the office yesterday but it barely registered as it is about 70 degrees right now. I checked a couple of suppliers but you may have to hunt for the thermostats for the early cars. The two I found were new and that is what you want. They fit in the top hoses next to the radiator. Slide in the hose. Maybe some of the other folks can suggest a source. I am running a Ford radiator with a pair of stock water pumps. It's a good radiator but old. Also, I have been following the forum for about a year and a half. Everytime water pumps comes up there seems to be a rush to make them pump more coolant. I am sort of at a loss as to that, IF your radiator is good, because we spent time years ago trying to figure out how to slow the coolant down just using regular water pumps. Thermostats and large washers (I haven't done the washers but know some that have) were the only ways to keep the coolant from moving too fast. Let us know how it works out. Ken supereal 03-08-2011 @ 11:33 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 We often hear about the coolant "moving too fast", but the faster the circulation, the better the cooling. Slowing the rate of circulation produces hotter coolant entering the radiator, and will swamp the system if the radiator isn't absolutely clear, reducing the efficiency of the heat to the air. We often had problems before cooling systems were pressurized. The Model A's had a baffle built into the top tank to try to prevent loss from the overflow tube, but it often splattered the windshield anyway. Skip Haney's pressure valve is a step in the right direction, adding about three pounds. This contains the coolant, and produces enough pressure to reduce hot spots in the heads and block. A low foam antifreeze, such as Sierra, helps, as well. Replacing an old radiator is not cheap, but in the end, it is a good investment if you drive your car much, and don't have to worry about boiling. 37RAGTOPMAN 03-08-2011 @ 11:47 AM reply profile send p.m. Senior Posts: 1942 Joined: Oct 2009 HERE WE GO AGAIN,,,!!!!!!!! TO THEMOSTAT OR NOT TO THERMOSTAT,that is the QUESTION,, to me is whats works for you, if you have foam,its has AIR in the Coolant System and is LOW on coolant, fill when OPERATING TEMP. , this way you can top off the system, 50/50 MIX, 37RAGTOPMAN This message was edited by 37RAGTOPMAN on 3-8-11 @ 12:08 PM TomO 03-09-2011 @ 8:00 AM reply profile send p.m. Senior Posts: 7243 Joined: Oct 2009 Supereal, I agree with Kens 36, that the correct radiator cap for the 50 Ford V-8 is the 4 lb cap. (P/N 26H-8100B) The 7 lb cap was standard on the 52-53 6 cylinder and optional on the 51-53 V-8. My reference is the 1953 Parts catalog. Tom supereal 03-09-2011 @ 8:40 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Thanks, Tom. Most of my reference material after '48 is for trucks. Given a choice, I'd opt for the higher pressure, anyway, but if two quarts are kicked out, it is a safe bet something else serious is going on. A blowdown test would be in order, I think.

<< previous || next >>

PAGE: 1 2

NOTE: YOU MUST BE A REGISTERED USER AND BE LOGGED IN TO POST (and reply to) messages in this forum. If you are a first time user, please click the CREATE A NEW ACCOUNT in the masthead above to register and Log In. After that, all you do is LOG IN to enjoy using this site.

DISCLAIMER: The V-8 Club does no independent testing of any of the opinions, thoughts or suggestions presented in the website on the Forum, in the Tech Tips section, or any section. A reader should consider the website to be a forum wherein differing solutions to a particular set of circumstances may be discussed. Ultimately, the selection of an item for an individual's vehicle must be based upon the independent study of the vehicle owner in consultation with people in the hobby and restoration experts.

EFV-8 Club Forum Home | Back to Home Page | Contact the Webmaster

Copyright © 2009 - EFV-8.org
Powered by < CF FORUM > v.2.1