Post to the EFV-8 Forum
Post Classified Ads
Shop the Online Store

User Login

Not Registered Yet? Click Here to Sign Up!

Early Ford V-8 Club Forum

FORUM RULES: Users agree to these Rules when using Forum.

The site administrator reserves the right to change the terms and conditions of the user agreement without prior notice to the user. It is the responsibility of the user to regularly review the terms of this agreement.

The user agrees to the following terms:

All information that you provide to us for your membership is correct.
You will not use your membership to spam, harrass, or exploit other members in any way.
Vulgar, Abusive, Racist and Sexist Language will not be tolerated.
Commercial-type sales postings will not be allowed.
No mass posting or flooding of the boards is allowed.
No Advertising of parts or cars; no Ebay or business/commercial ads (please use the "Classified" for ads Wanted or For Sale).
VIEWING MULTIPLE TOPICS ON SCREEN: You can choose to see more than 10 Topics at a time ... Log In and choose "Preferences" from the top bar on the Forum page. Scroll down and Change the "Default Topics Returned" parameter to 25 or 50, and save the changes. Since this setting is stored in your browser 'cookies' (if enabled), it seems to use that stored value even if you are not logged in. So, if you use a PC that you haven't logged into the forum from, the setting still seem to remain at the default.
EXTERNAL PHOTO LINKS ON FORUM: You can still use external photo links in your posts on the new forum. They follow the rules of any link in that they have to have the URL link qualified down to the full image file name (example: .jpg). The links will open in a new browser window, the same as an uploaded image attached to a post. Since an image attachment to any post does not display inline with the post, the results are the same. You can use multiple external links within a post. This link is from photos on a site from Don Clink's 'Deuce@75' albums:

http://donclink.com/deuce_75_1/images/dscn2950.jpg

Using links from photo sites such as Photobucket can help in "size" issue with uploaded attachment files. For best viewing in web browsers, photos should be around the 800x600 pixel range, and probably not more than 1024x768. Most cameras today store HUGE jpg image files, as the default settings are in the 7, 8, 10, and 12Mb image sizes. The image files that are then attached are very large, and the browser can't display the full image size without using the scroll bars. Use the re-sizing functions of your photo editing software to reduce the image to 800x600, which reduces the file sixe and the image load time in the browser. Don uses Google's free Picassa3 software, which is an excellent photo management product. All of the photo albums of the Deuce, Grand National, and Auburn that are links on the NORG site were built using Picassa's web creation functions. And it's free? (THANKS to Don Clink for the info!)
HOW DO I SHOW MY EMAIL ADDRESS ALONG WITH MY USERNAME? You can LogIn on the Forum, and select PREFERENCES. On this page Members can add optional information such as their City,State, Country; Occupation; Hobbies: list a Homepage; list AOL Instant Messanger Handle; Signature; "Make Email Address viewable to others;" and even change the number of Default Topics shown on a page. WHEN others click on your profile, they will see this information.

EFV-8 Club Forum / General Ford Discussion / '47 Cooling System Capacity

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: '47 Cooling System Capacity

len47merc

02-06-2017 @ 2:44 PM

reply profile send p.m.

Senior
Posts: 1165
Joined: Oct 2013

To put this to bed for good this time this year, I assumed a 23 quart capacity per cliftford's original reply and 42wagon's 'second' (albeit referencing a '42 versus a '47) and, using antifreeze concentration charts, my AF tester and some simple homespun equations intended to drop the freezing point below 10 degrees, drained a measured 3.75 quarts out of the radiator (at current ~15% AF) and refilled with pure AF to the normal fill level to prevent spitting. Drove the car for 45 minutes and let it cool and rechecked the new now-mixed fluid. Moved the freeze point down from ~23 degrees to ~5 degrees which only slightly overshot my targeted sub-10 degrees. So the 23 quarts assumption had to be close to on the mark.

Thanks guys for weighing in. Wanted to learn as well what the markings on the radiator tank indicated - if anyone can add to and/or confirm the '21A' and 'MO' it is appreciated. Cheers -

Steve

len47merc

02-06-2017 @ 2:12 PM

reply profile send p.m.

Senior
Posts: 1165
Joined: Oct 2013

Respectfully submitted you are missing the point oldford2. The system is currently full of relatively fresh coolant installed just prior to Gettysburg last summer. I only wish to drain as much coolant as is necessary in order to waste as little of the existing fresh mixture as possible. If I've an accurate count of the system capacity the exact amount of fresh AF needed to be added to hit the target can be calculated, taking into account some percentage of the AF already in the system will be lost during draining. I do not care to dump the entire system and refill when a calculated and measured 3-6 qts will do the trick. It's easy to calculate and simple to me at least to be as efficient and economical as possible. Given the cost of the AF these days my pocket and personal time can use all the help they can get!

Steve

oldford2

02-06-2017 @ 1:55 PM

reply profile send p.m.

Member
Posts: 275
Joined: Oct 2009

Let's keep things simple. Fill with your choice of coolant 1" below the top of the radiator. Run thru a heat cycle and refill if necessary. No research required

42wagon

02-06-2017 @ 11:33 AM

reply profile send p.m.

Senior
Posts: 585
Joined: Oct 2009

Len
My original 1942 owners manual says 22 quarts. I am assuming this is without the heater since none is mentioned in the manual. I believe that the 21A you are looking at is a part designation since 21A was the number for 42 Fords. MO probably refers to a Ford radiator plant or outside supplier.
42 Wagon

len47merc

02-06-2017 @ 9:15 AM

reply profile send p.m.

Senior
Posts: 1165
Joined: Oct 2013

Performing some winter maintenance and am refloating this discussion from last Jan '16 with a follow-up question.

Drbrown mentioned Radiator Part No. vs 'system capacity'. Looking at the back of the radiator on the '47, embossed in the top tank just to the right of the passenger side top return hose is an underlined '21A', under which the letters 'MO' are embossed in the same font and size. Is it a correct assumption that this is the part number Drbrown is referring to? If so, then would it also be correct to assume the '47 has a 21 quart 'system capacity' (or 22 quarts as cliftford metioned given it has a heater)? Any idea what the 'MO' refers to?

I run a very low concentration of antifreeze (AF) in the Merc for spring-summer-early fall driving (approx. 15% given the freezing point check). We recently had (unusual for us) low single-digit temps here and, although the car is maintained in an attached, insulated garage that in the last decade I can count on one hand the number of times the internal temp fell to below 50 degrees, I want to increase the level of coolant/AF to 30-33% for peace of mind to ensure coverage in the event I do take it out for any reason this winter (or one of the two garage doors is mistakenly left open during a cold snap). Easy enough to calculate how much AF to add in this circumstance (or the reverse in the spring) - just want to ensure the system capacity (not radiator capacity) is correct for the calculations so I can get it right the first time and not have to go through multiple tweaks to get to the desired concentration.

Steve

This message was edited by len47merc on 2-6-17 @ 9:18 AM

len47merc

01-14-2016 @ 5:36 AM

reply profile send p.m.

Senior
Posts: 1165
Joined: Oct 2013

Great information guys - thanks to you both!

Steve

Drbrown

01-13-2016 @ 8:56 PM

reply profile send p.m.

Senior
Posts: 571
Joined: Nov 2013

Echoing the above, original 1946-48 Ford/Merc/Lin Service Manual:

Pass 6 cyl = 14.5 qts
Pass 8 cyl = 22 qts
Pass 12 cyl = 27 qts
Truck 6 cyl = 17 qts
Truck 8 cyl = 23 qts

All above presumed without heater.

However, the specific radiator furnished in a vehicle affected its cooling system capacity. See Dealer's Service Bulletin #8000 Pg1 for chart displaying Radiator Part No. vs system capacity as follows: 15, 17, 21, 22, 23, 33 and 42. Obviously and without deciphering the radiator part nos. some of the latter are 6, 8 and 12 cylinder and truck systems.

This message was edited by Drbrown on 1-13-16 @ 9:16 PM

cliftford

01-13-2016 @ 5:04 PM

reply profile send p.m.

Senior
Posts: 845
Joined: Jan 2014

Steve,for what its worth, my FORD service manual says 22 qts. I'm assuming that's with no heater, since heaters were not standard equipment in those days.

len47merc

01-13-2016 @ 12:22 PM

reply profile send p.m.

Senior
Posts: 1165
Joined: Oct 2013

What is the complete cooling system capacity for '42-'48 with completely original, stock components? The SHOP MANUAL in Fig. 5 on page C-4 states 17 quarts. Others have stated on this forum 21 quarts (5 gallons distilled water or water/AF mix plus 1 quart of WaterWetter/hy-per lube/etc.). EDIT - Secondchancegarage.com shows 22 qts without heater, 23 with (my '47 has a heater).

Appreciate any more definitive resource material/data that anyone may have.

Steve

This message was edited by len47merc on 1-13-16 @ 12:52 PM

<< previous || next >>

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.

Early Ford V-8 Club Forum

Merchandise Questions

Membership Questions