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 / Alternator belt

Reply to Discussion | New Discussion

<< previous || next >>

Posted By

Discussion Topic: Alternator belt

Jlking2010

04-14-2024 @ 2:47 PM

reply profile send p.m.

Member
Posts: 9
Joined: Mar 2024

My ‘35 sedan was converted to 12 v with an alternator before I got it. The alternator went bad and I am replacing it with a new one. I also had to buy a new bracket. The new alternator on the new bracket is 1 1/8 inch higher than the old one so the stock belt is too short. Please advise if you have cxperienced this problem and solved it. Also looks li I will have to demon the radiator hose to get ny let on?

TomO

04-14-2024 @ 5:29 PM

reply profile send p.m.

Senior
Posts: 7243
Joined: Oct 2009

Before you proceed, see if your fan will interfere with the radiator when you raise the alternator 1 1/8". If the fan will not hit the radiator, you can just buy a longer belt.

If the fan will hit the radiator, you will have to have the old alternator rebuilt.

Tom

Jlking2010

04-14-2024 @ 6:12 PM

reply profile send p.m.

Member
Posts: 9
Joined: Mar 2024

Okay, thank you for the reply. How much tension should I have on the belt when installed. The one that was in there before was very tight.

carcrazy

04-14-2024 @ 7:14 PM

reply profile send p.m.

Senior
Posts: 1587
Joined: Oct 2009

To get the proper sized belt for your new alternator: take a piece of clothesline or other rope and run it over all of the pulleys, cut the rope to the proper length, and measure the length of the rope to determine the length of the belt you need, take your new alternator or the drive pulley for it to a good local auto parts store to determine the cross section of the belt required.

The diameter of the alternator pulley is important - it should be approximately 2.5" in diameter to spin the alternator fast enough to charge at idle and low engine RPMs.

You may not be able to use an alternator mounted fan due to clearance conditions. In that case, you will need to use an electric radiator-mounted fan to cool the engine.

Jlking2010

04-15-2024 @ 8:14 AM

reply profile send p.m.

Member
Posts: 9
Joined: Mar 2024

I measured the length and it comes to 53 1/2 which is the length of the 40-8620 belt I have. Because of the increased size of the new alternator, it appears I might be able to get the belt on if I remove a radiator hose on one side so I can cock the alternator a bit more.

The fan is slightly touching one of the radiator hoses as it rotates. It is either end of one of the blades. There is a slight curve in that radiator hose and it is not a smooth surface so a different hose might cure the issue.

Your thoughts?

carcrazy

04-15-2024 @ 10:18 AM

reply profile send p.m.

Senior
Posts: 1587
Joined: Oct 2009

If the fan is that close to touching a radiator hose, I would be worried. As the car is driven the engine will move around and the chances the fan will contact the hose increase.

One possible solution, in addition to the one you have mentioned is to shorten the fan blades by about 1/2" each and then have the fan dynamically balanced.

Drbrown

04-16-2024 @ 6:55 AM

reply profile send p.m.

Senior
Posts: 563
Joined: Nov 2013

I don't have a '35 but I'm surprised the replacement alternator is that different. Mine had a GM style alternator that had a range of 5 to 6 amps. Because I was considering installing an electric radiator fan I replaced it with another GM style that puts out 11 - 12 Amps and it fit fine with no changes. (Related) Regarding alternators I had a difficult time buying/finding a replacement alternator that didn't put out voltage spikes above the maximum i.e. damaging my electronic modules. I finally had my local electrical shop bench test my purchase before installation.

This message was edited by Drbrown on 4-16-24 @ 6:56 AM

carcrazy

04-16-2024 @ 4:06 PM

reply profile send p.m.

Senior
Posts: 1587
Joined: Oct 2009

Is the new alternator setting so high because it is resting on the top of the intake manifold? Or is it because the mounting bracket slot is not long enough to allow the alternator mounting bolt to go any higher in the bracket? If the slot is too short to allow the alternator to be mounted lower, the slot in the bracket can be lengthened.

The GM 10 SI Alternator (63 amp) that I am using on my '37 Ford Flathead V-8 has a diameter of about 5.5". Couldn't package the alternator mounted fan on this application so went with a 14" diameter electric fan mounted to the radiator.

Jlking2010

04-17-2024 @ 11:55 AM

reply profile send p.m.

Member
Posts: 9
Joined: Mar 2024

Thank you, I like your idea of lengthening the slot. Looks like I could add about an inch without the alternator touching the intake manifold.

37RAGTOPMAN

04-18-2024 @ 1:22 PM

reply profile send p.m.

Senior
Posts: 1941
Joined: Oct 2009

HI
you could try CERTIFIED AUTO ELECTRIC in BEDFORD OHIO,
they might be able to help you, with some information,
they sell these all the time,
they sold me a complete unit, fit right on my 37
the phone number 440 439 1100 web 6vto12v@gmail.com
hope this helps 37Ragtopman, Maine

<< 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