LOGIN
  • Post to the EFV-8 Forum
  • Post Classified Ads
  • Shop the Online Store
User Login

Not Registered Yet? Click Here to Sign Up!



(Forgot your Password?)
Remember me on this computer

Not registered yet?
REGISTER NOW!

Back to Home Page Show Forum Rules

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:

  1. All information that you provide to us for your membership is correct.
  2. You will not use your membership to spam, harrass, or exploit other members in any way.
  3. Vulgar, Abusive, Racist and Sexist Language will not be tolerated.
  4. Commercial-type sales postings will not be allowed.
  5. No mass posting or flooding of the boards is allowed.
  6. No Advertising of parts or cars; no Ebay or business/commercial ads (please use the "Classified" for ads Wanted or For Sale).
  7. 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.
  8. 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!)
  9. 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 / sealing a cracked block

   Reply to this DiscussionReply to Discussion | Start new discussionNew Discussion << previous || next >> 
Posted By Discussion Topic: sealing a cracked block

Printer-friendly Version  send this discussion to a friend  new posts last

sundog126
02-06-2019 @ 2:46 PM
Member
Posts: 22
Joined: Mar 2018
          
I have a flathead v8 with a small crack between the head stud and the coolant cir hole on the block, some how the coolant is getting in the cyl. ,has anyone used J-B weld to repair a crack in that location, the cylinders are borded out 40 over and I also have alum heads so the big bore head gaskets don't cover that much.

alanwoodieman
02-06-2019 @ 4:04 PM
Senior
Posts: 864
Joined: Oct 2009
          
first thought--why do you use a big bore gasket set? is it copper or composite?

sundog126
02-06-2019 @ 6:16 PM
Member
Posts: 22
Joined: Mar 2018
          
I was instructed to use the big bore copper gasket for my bore and alum heads

carcrazy
02-06-2019 @ 7:55 PM
Senior
Posts: 1587
Joined: Oct 2009
          
While it may not be the preferred way to repair a cracked block, the use of Bar's Stop Leak will most probably stop the leak and seal the cooling system. I have used this product in the past to seal an external leak on the side of a Flathead block with great results.

TomO
02-07-2019 @ 7:33 AM
Senior
Posts: 7243
Joined: Oct 2009
          
.04 and .060 are standard oversize bore on the 221 cu. in engine and the 239 cu.in also used those size overbore from 1939-1948. Those are also the standard over bore for the 8BA blocks, so a standard head gasket should work fine for your engine. I would recommend the composite gasket and that you run anti-freeze all year to reduce the chances of corrosion in your heads.

I doubt that JB Weld will do much good in sealing the crack. The cast iron area cannot be cleaned enough and the crack is probably too thin to support a good bonding for the epoxy. Any oil residue in the cast iron will cause the epoxy to fail to adhere.

Cracks from a stud to the coolant holes are pretty common in the flathead engines. They usually do not cause any problem as the head gasket keeps the coolant from entering the combustion chamber.

Before I install a head, I like to use a thread chaser (NOT a threading die)to clean the stud threads, then I clean the debris with a a light oil followed by wiping the threads to remove all excess oil.

When you torque your head bolts with a new gasket, do it in stages and stop applying pressure as soon as you hear the click. The first stage I use is 20 Ft. Lbs, the next stage is half of the remaining torque (45-20=25/2 =12 +20=32Ft Lb.) then I do another half of the remaining torque and finally toque to the final reading. Run the engine to operating temperature, let it cool down and then retorque the heads.

Tom

sundog126
02-08-2019 @ 12:45 PM
Member
Posts: 22
Joined: Mar 2018
          
thanks for the info



<< 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.


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

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