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 / 1947 Engine Block

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: 1947 Engine Block

woodwagon47

03-01-2010 @ 3:07 PM

reply profile send p.m.

Member
Posts: 16
Joined: Oct 2009

I have my engine out of the car due to a popping noise that occured last fall. The engine was rebuilt about 5 years ago and has ran great until now. I took the heads off and pulled all the valves, replaced 3 guides, and refaced the valves. They looked good but i did it anyway. I had the heads resurfaced. This engine has run engine great since it was rebuilt. A friend said I could have a cracked block, It starts popping after it gets warm. The heads were not bad but they were warped a little. Before I took it out I ran a compresssion test, number 1 and 4 20 lbs and the rest about 80. no oil in cylinders, seats look good to the eye. any ideas? It was not using any oil and carried good oil pressure.

Pauls39

03-01-2010 @ 5:29 PM

reply profile send p.m.

Member
Posts: 81
Joined: Oct 2009

When you checked the compression did you check it wet with some oil in the low cyl? This would seal the rings. If they were still low I would suspect a valve problem.
Did it pop back through the carburator or out the exhaust?
We will need more information. Post back when you can. With the information at hand,I would suspect bent or sticking valves or worn guides.

woodwagon47

03-01-2010 @ 7:41 PM

reply profile send p.m.

Member
Posts: 16
Joined: Oct 2009

I checked the compression dry, no oil in the cylinder, It had 3 bad valve guides that I have replaced. The engine has been converted to later valves and one piece guide. When I took the heads off the cylinders were dry that is no oil up in them. The valves seem to be straight not bent. The guides came right out, it has adjustable lifters and the clearances were good. One thing we noticed is that the rotor button has a lot of play in it, but none in the distributor. As I said the heads have been resurfaced. It is popping back through the carburetor. It has never backfired. It will idle fine, then when you get it out on the road and up to temp it starts popping. Your lucky to get it up to 50. After sitting for awhile I mean a week or so its a little hard to start but after you get it running it starts right up. Right now the motor turns over easy on the floor. with a socket on the crankshaft pulley. It has an electronic ignition on it and all new wires. I sent the electronic distributor back to Philbun for testing and they said it was fine. igniti

supereal

03-02-2010 @ 10:13 AM

reply profile send p.m.

Senior
Posts: 6819
Joined: Oct 2009

This is a long shot, but late last year we had an engine in our shop that had odd compression readings on two cylinders. The owner was told that it had been "rebuilt" just before he bought the car. It, too, was popping. We found that two of the replacement valve seats were loose when the engine was warm. Whomever did the job overcut the block, and tried to secure the seats by staking the edges. Another common cause is weak or broken valve springs, often hard to spot, or failure to completely seat the valve guide forks. When we convert a early engine to straight stem valves, we cut an extra seal groove in the guides to be sure they don't leak. Also, check to see that the crankshaft key holding the gear that turns the timing gear is intact, and hasn't sheared or swedged. That will interfere with the timing, also a cause of popping and backfiring.

Pauls39

03-03-2010 @ 5:39 PM

reply profile send p.m.

Member
Posts: 81
Joined: Oct 2009

Just a guess but I would look at this mainly as a valve problem.
Like Super said check the valve springs. We have seen a mix of short and long springs with assorted keepers, early springs with late rotaters, they don't mix well. Be sure yours are a set and that the installed spring hight is correct. You may need shims to get the correct installed spring lenght and pressure.
Lap all the valves/seats to ensure good contact.
It may be a separate issue, but that rotor should be tight. Replace it if need be. Some of the parts made off shore leave a lot to be desired.

<< 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