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09-26-2021, 07:10 PM | #1 |
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Location: Atlanta GA
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which alternator bracket do I need?
I got the 41 motor with the hole in the water jacket out of my 36 coupe, and in its place sits a fresh built french block motor with wide belt truck water pumps. The earlier motor had a delco style alternator bracket but it doesnt put the alt pulley far enough forward to align with the crank and water pump pulleys.
I had been using an electric fan and it will have to be dealt with somehow, but for now the pulley alignment is the issue. I'm running an Elderbrock 8BA style 4bbl intake. I may have to go to a pusher fan, or perhaps I can drop the puller fan lower so the fan hub doesn't scrub anything. Will this Speedway bracket get me past this problem and allow me to proceed to the next conundrum? https://www.speedwaymotors.com/Plain...cket,4242.html I'll fix the holey block, but that's for another day. |
09-26-2021, 07:17 PM | #2 | |
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Re: which alternator bracket do I need?
Quote:
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09-26-2021, 08:18 PM | #3 |
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Re: which alternator bracket do I need?
Should work for 10si & 12si Delcos and knockoffs. But sure doesn't look home-made. And costs a lot more too. But if your time is money and you got plenty of the latter, I guess it'll do. 8^)
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09-26-2021, 08:41 PM | #4 | |
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Re: which alternator bracket do I need?
Quote:
This is ONE of the problems you run into when mixing EARLY water pumps and LATE intake manifold. A "59" type intake may be your alternative fix. Please don't put an electric fan on that nice old Ford! DD . |
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09-26-2021, 10:02 PM | #5 |
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Re: which alternator bracket do I need?
"Homemade" has a questionable connotation.
I have a late intake and late pumps. After some further searching I found alangrovecomponents.com French blocks require late truck pumps, this puts the belt and pulleys out to 3 1/8" off the block face. the early (on my old motor) pumps are 1 7/16" off the block face. (dimensions from the alan grove components website) This puts the upper pulley almost in the slanted 36 radiator. Not really much room for a mechanical fan in the 36 after the mill swap. I've had the 8BA intake a long time and CharlieNY did a nice early Rochester 4bbl conversion for me some few years ago. I can't see whether the Speedway bracket will work for my application. I'm certainly open to any alternatives. I may be wrong, but it appears that Mr Grove has what I need. |
09-26-2021, 11:02 PM | #6 |
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Re: which alternator bracket do I need?
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Possibly some of this stuff is retrievable off of the old 41 block, but ensure the water pumps you use have sealed bearings, not bushes. If they have double sheaves, they have bearings.
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09-27-2021, 03:13 AM | #7 | |
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Re: which alternator bracket do I need?
Quote:
johndee .....A friend (Heard here on The 'Barn) and I needed to come-up with some sort of MECHANICAL fan arrange for his '36 3-window Coupe with an 8BA & late intake manifold. Look over the idea that we designed, and that Heard built in his garage. Making pulleys match-up was a huge part of designing this perfectly wonderful answer to that slanted radiator and pulley alignment. Click the link below (or the GREEN link at lower, left of this post) for the complete story & many pictures. If you have any questions, I have answers. DD https://www.fordbarn.com/forum/showthread.php?t=278828 . Last edited by V8COOPMAN; 09-27-2021 at 03:20 AM. |
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09-27-2021, 09:03 AM | #8 |
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Location: Atlanta GA
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Re: which alternator bracket do I need?
Y'all want to build another one?
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09-27-2021, 10:13 AM | #9 |
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Location: San Antonio, Texas
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Re: which alternator bracket do I need?
I've seen several different mechanical fan set ups on the HAMB that work on 8BA family engines fitted to early V8 applications. Some use the generator on cylinder head mounts with a fan similar to post #7. It can be done but it takes some ingenuity to get it there.
When changing an 8BA manifold out for an early type, it usually requires a modification for a PCV valve to vent the crankcase since the 8BA family vent through the intake. Changing the front cover to a crab type distributor requires a change of timing gears and cam to early type to drive the distributor and get correct thrust load on toward the front. If a person does this then they can use the early 37 thru 48 type coolant pumps. This still doesn't do much for the fan drive unless a person uses a generator mounted fan like original or fabricates a fan with an offset generator. Alternators don't work well for fan drive applications due to the small bearing set most of them have. The old generator fan drives were heavy duty set ups. |
09-27-2021, 10:49 AM | #10 |
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Re: which alternator bracket do I need?
Johndee, Have you seen this thread?
https://www.fordbarn.com/forum/showt...3307&showall=1 Here's another link that may give you some ideas. https://www.tuffstuffperformance.com...alternator.pdf Last edited by 19Fordy; 09-27-2021 at 10:55 AM. |
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