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Old 01-15-2020, 07:12 PM   #1
derek costello
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Default fan belt?

what is the 5/8" belt length for a 8ba for typical crank- water pumps-generator arrangement ??
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Old 01-15-2020, 09:19 PM   #2
leon bee
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Default Re: fan belt?

You can check Rock Auto to get a brand and part number, then go to the manufacturer's site.
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Old 01-15-2020, 09:23 PM   #3
leon bee
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Default Re: fan belt?

Such as: Gates TR0544........54.73" outside circumference.
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Old 01-15-2020, 09:25 PM   #4
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Default Re: fan belt?

A decent way to quick check a belt size is with a piece of string. Mark were they meet and measure it. Works for anything with a belt.




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Old 01-15-2020, 10:57 PM   #5
19Fordy
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Default Re: fan belt?

I found that the Rock Auto Website gives the length of the fan belts. I think the truck belts were 5/8" wide.
Plug in the numbers for your vehicle and see what you can find.
https://www.rockauto.com/en/catalog/...rive,belt,8900
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Old 01-15-2020, 11:09 PM   #6
leon bee
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Default Re: fan belt?

You know, when I'm looking for something old or odd I've noticed that the new young guys up at my NAPA will click over to Rock Auto to find clues.
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Old 01-16-2020, 02:13 AM   #7
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Default Re: fan belt?

Or just walk into the local farm supply and get a B-52 belt.
It depends a little on what pulley you have on the generator a low rev high charger generator has a smaller diameter and there is a bigger then normal one to...but usually B-52 fits nicely.
Trying to order one on model here would be an adventure...lol
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Old 01-16-2020, 10:14 AM   #8
a36bonanza
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Default Re: fan belt?

I'm using Gates BX52 and Gates BX35 on my 8BA
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Old 01-16-2020, 12:40 PM   #9
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Default Re: fan belt?

Quote:
Originally Posted by leon bee View Post
Such as: Gates TR0544........54.73" outside circumference.
The way to figure a B belt size is B size plus 3 inches equals true length. Thus,54.73 is a B52 belt. For an A belt the difference is 2 inches. Mark
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Old 01-16-2020, 04:57 PM   #10
Ford Freak
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Default Re: fan belt?

Hey guys ! Any of you ever use a (single) 1/2 belt w/the 5/8 pullys on the crank , waterpumps , & alternator ? Just wondering if it would work ok ....
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Old 01-16-2020, 05:43 PM   #11
JayChicago
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Default Re: fan belt?

I believe a 1/2” belt in the 5/8 pulleys would work, but NOT ok. A belt should bite the pulley with the sides of the belt. The belt should not be at the bottom of the pulley, and I think that’s what you would have with a 1/2” belt.
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Old 01-16-2020, 06:29 PM   #12
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Default Re: fan belt?

Jay - Yeah , that males sense . I just thought it might make mine less " squeaky" . Thanks for the quick answer ! - F F
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Old 01-17-2020, 10:49 AM   #13
48 fordor
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Default Re: fan belt?

I have my 48 crankshaft pulley off and took a narrow belt, wrapped around it and there is about an 1/8 inch off the bottom of the pulley. I am looking at driving a type ll power steering pump off the front pulley. I cant find a narrow belt pulley for the front or a wide belt pulley for the type ll. Any ideas?
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Old 01-17-2020, 11:26 AM   #14
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Default Re: fan belt?

Problem is that a narrower belt cant handle the same amount of power and not wear out faster.
And you need enought length of the belt to make contact with the pulley.
Ive seen setups where you ad PS and AC on top which makes the belt barely touch the waterpump...not the best solution.
Making a custom widebelt pulley for the PS pump is one way of solving it...
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Old 01-18-2020, 10:00 AM   #15
48 fordor
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Default Re: fan belt?

Thanks for the input, I thought that would be the best way to go.
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Old 01-18-2020, 02:35 PM   #16
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Default Re: fan belt?

Quote:
Originally Posted by 48 fordor View Post
Thanks for the input, I thought that would be the best way to go.
I have dozens of different pulleys and may be able to help you. These are commercial and I have used them on a couple engines. The main thing would .be the shaft size which can be dealt with.
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Old 01-19-2020, 02:35 PM   #17
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Default Re: fan belt?

Nice to see that a36bonanza provided the answer.
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