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 / How do I burp my flathead

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: How do I burp my flathead

aikidonorthwest@gmail.com

08-13-2023 @ 6:48 PM

reply profile send p.m.

Member
Posts: 2
Joined: Aug 2023

I have a 1952 Ford F1 PU. It has the original flathead V8. I recently completely rebuilt the motor. The problem I am having is that the thermostats won't open up. I have just replaced the water pumps with new improved pumps, replaced both thermostats, had the radiator gone thru. and it still is doing the same thing. I just tried bypassing the heater core. still no change. I'm t0ld there is a way to "burp" the cooling system. Can anyone help me solve this problem please!

ford38v8

08-13-2023 @ 7:57 PM

reply profile send p.m.

Senior
Posts: 2758
Joined: Oct 2009

Some thermostats have a small bypass flow, some don’t. Some stats are located high in the hose, some in the neck of the head, and some are mounted backwards. If hot water can’t get to the stats, they stay closed. Drill a 1/8” hole for a bypass, and check the location and orientation.
The burp you mentioned refers to the heater having trapped air. Route the hoses: pass head>bottom heater>top heater> pass water pump.

Alan

This message was edited by ford38v8 on 8-13-23 @ 7:57 PM

Drbrown

08-13-2023 @ 7:59 PM

reply profile send p.m.

Senior
Posts: 570
Joined: Nov 2013

I admit I've not heard about "burping" an engine cooling system. I gather you're thinking that air is trapped in the block and assume you check the coolant level in the radiator neck. (1) Check to see that your new thermostats are working right - on your kitchen range with a cooking thermometer. (2) Didn't say - does it overheat/boil over ? - what does your gauge say ? (3) Be sure the thermostats are facing the correct direction. (4) The thermostat flappers should have enough loose fit that any air air trapped in the cylinder head below should seep by. Some guys drill a small hole in the stat to encourage this.

coup

08-14-2023 @ 6:25 AM

reply profile send p.m.

Member
Posts: 71
Joined: Sep 2011

Remove temp sending units

kubes40

08-14-2023 @ 7:04 AM

reply profile send p.m.

Senior
Posts: 3395
Joined: Oct 2009

Alan is spot on. Trapped air is / was commonplace in the 70's as many vehicles had the heater core located higher than the engine's water jacket.
There were times when it seemed nearly impossible to "burp" the system.
If your heater is routed correctly as Alan had advised, the air will eventually find its way out of the system.

Did you test the thermostats prior to installing them? New does not necessarily equate to good.

Mike "Kube" Kubarth

carcrazy

08-14-2023 @ 9:59 AM

reply profile send p.m.

Senior
Posts: 1653
Joined: Oct 2009

Once had a VW Vanagon with the Wasserboxer engine. This vehicle featured a water cooled rear engine with a front mounted radiator. After a coolant change, the front of the vehicle had to be raised one foot higher than the rear to purge air out of the cooling system. The procedure involved opening some bleeder valves while running the engine until all of the air was out of the system.

aikidonorthwest@gmail.com

08-14-2023 @ 10:46 AM

reply profile send p.m.

Member
Posts: 2
Joined: Aug 2023

my thermostats are located on the head. 1952 8RT motor. Aluminum heads. Based on what you said, I think I had the heater hoses backwards. Head to top, water pump to bottom. Is that backwards? I have now bypassed the heater core, just linked the head hose to the water pump hose. Still no change. I did check the thermostats on the stove before installing. They worked, but the old ones worked just the same.... so it seems the thermostats aren't the problem. Thanks for your help and input!

TomO

08-14-2023 @ 11:48 AM

reply profile send p.m.

Senior
Posts: 7250
Joined: Oct 2009

You never answered the question about overheating.

I would remove the upper hoses and see if coolant is reaching the thermostats. You may have to remove the thermostat housings to see this. There may be a blockage in the block or head.

Did the cooling system take the full 21 quarts of coolant? Drain and refill to check. Some coolant (1-2 quarts) will remain in the block after the draining.

Tom

<< 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