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 / Which '36 head?

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: Which '36 head?

wilmalcolm

11-19-2011 @ 9:52 AM

reply profile send p.m.

Member
Posts: 64
Joined: Nov 2011

Thank you 40 Coupe for that informative answer. The lower head in the original post is the one that came off the engine and has no part number markings, only the inscription "Ford". The upper head is marked 68-6049-B. They are both cast iron. I inclose a shot showing the large water passages of the block which match the lower head image in the original post. The front and rear holes look to be the same size. So it looks like I will stick with the flat head pistons and the heads that were on the engine when I got it. The block is a LB block.

40 Coupe

11-18-2011 @ 5:20 AM

reply profile send p.m.

Senior
Posts: 1675
Joined: Oct 2009

the part numbers for the two heads could carry a clue as to the difference? As you are probably aware the domed top pistons of the 36 require the domed top head.The 36 early factory aluminum domed top head (introduced mid to late 1935)48-6049/50 was was replaced late in 36 with 68-6049/50-A (aluminum) or -B (cast iron) around April of 36 the -A2 head was introduced and at that time the -A head became -A1 so the -A and -A1 are identical with large spark plug opening, the -A2 heads have small spark plug openings. Ford did try to overcome the over heating problems, with various fixes, but as we now know was more of a problem with casting sand and debris left or deposited, over time, in the rear of the block and the inability of the front mounted water pump to circulate enough water in this area. Fords fix toward the end of the flat head production was to enlarge the coolant holes in the rear of the head gasket and make the front holes smaller, restricting the flow in the front and increasing the flow in the rear. The larger coolant holes in the head will not do much to improve coolant flow unless the corresponding coolant holes in the block and the head gasket are of equal or larger size.

wilmalcolm

11-15-2011 @ 2:05 PM

reply profile send p.m.

Member
Posts: 64
Joined: Nov 2011

Hi,
I have two sets of cast iron heads for my '36 LB engine. One is for flat topped and the other for domed topped. One head has much larger coolant passages from the block to the head. Since the 21 stud engines were known for their overheating problems, doesn't it make sense to use the ones with the larger ports? See image, Domed top at the top. Also note the different placement of the spark plugs in relation to head combustion chamber. Is that because of the shape of the pistons?

This message was edited by wilmalcolm on 11-15-11 @ 5:05 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