The Ford Barn

Kube · 02-12-2022, 01:58 PM

Guys, I'm confident someone knows what this pulley is for. I can only guess at this "modern" stuff.
Thanks in advance.

flatjack9 · 02-12-2022, 05:10 PM

Looks looks like one off of a 59A engine.

cas3 · 02-12-2022, 05:27 PM

That was my thoughts too

Kube · 02-12-2022, 05:29 PM

Thanks guys!!!!

mercman from oz · 02-12-2022, 05:46 PM

Crank Pulley ID ? - Kube

51 MERC-CT · 02-12-2022, 06:10 PM

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Don't recall ever seeing a Ford dual pulley with both a wide and narrow width sheave. (possibly commercial)

V8COOPMAN · 02-12-2022, 07:05 PM

Quote:

Originally Posted by flatjack9

Looks looks like one off of a 59A engine.

Are y'all sure? The 59A front pulley shown below (as most do) has TWO wide belts, whereas Kube's pulley has one wide sheave at rear & one really narrow sheave toward the front. What would that NARROW sheave be for on a 59A? DD

59A Pulley BELOW!

Kube's Pulley BELOW!

.

1942deluxe · 02-12-2022, 07:27 PM

I just bought a NOS 21A 6312 dual sheave pulley (not easy to find and terribly expensive) and both pulleys are 7/8ths wide. Same pulley used on 42-48 Ford cars. Back pulley is
5" and the fan pulley is 5.38" per the green parts book. There is a double sheave pulley
listed for earlier commercial with a 5" diameter. 3 5/8" width on mine.

Mac VP · 02-13-2022, 06:15 AM

I’d guess that some crafty fabricator modified a regular 21A pulley to have the narrow front sheave, allowing him to operate the typical 1950-53 Ford passenger car fan assembly. Or on a modified flathead engine that would have a power steering pump……. I’ve never seen a stock pulley like that.

Kube · 02-13-2022, 09:22 AM

It appears the mystery continues.
The narrow and wide pulleys are what had initially confused me. This assembly has NOT been modified.

RKS.PA · 02-13-2022, 09:33 AM

Quote:

Originally Posted by Kube

It appears the mystery continues.
The narrow and wide pulleys are what had initially confused me. This assembly has NOT been modified.

Mike, any chance this is not a flathead pulley??

Kube · 02-13-2022, 10:01 AM

Quote:

Originally Posted by RKS.PA

Mike, any chance this is not a flathead pulley??

I suppose that's possible. However, the snout that goes over the crank screams flathead Ford.

Bored&Stroked · 02-13-2022, 10:40 AM

I've seen and cut-down plenty of the dual wide-belt pulleys . . . have never seen one with a narrow front belt. I wonder if it was an industrial or other application - maybe military???

5851a · 02-13-2022, 10:52 AM

Any chance this could have been for large truck semi-tractor. Narrow belt on air compressor? I'm curious.

Kube · 02-13-2022, 11:00 AM

Leave it to me to have something this odd in the "stash"

OldGold360 · 02-14-2022, 01:12 AM

Kube, the face of your pulley looks flat, or at least it does in the picture. Is it possible someone flattened it? I’m not sure why though. Maybe someone made it a narrow pulley. Does the narrow pulley have the same shape as a narrow pulley that is known to be good?

Mart · 02-14-2022, 05:17 AM

I can't comment on what pulley it might be, but wanted to point out the excellence in metal forming that allowed Ford to form those pulleys from a single piece of steel sheet. I imagine it was some sort of spinning/rolling/pressing process. I'd love to see that on video.

Mart.

02-12-2022, 05:10 PM	#2
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,600	Re: Crank pulley ID please Looks looks like one off of a 59A engine.

02-12-2022, 05:27 PM	#3
cas3 Senior Member Join Date: Jan 2011 Location: Beverly Kansas Posts: 5,301	Re: Crank pulley ID please That was my thoughts too

02-12-2022, 05:29 PM	#4
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,853	Re: Crank pulley ID please Thanks guys!!!! __________________ "I can explain it for you. However, I can't understand it for you".

02-12-2022, 05:46 PM	#5
mercman from oz Senior Member Join Date: May 2012 Location: Queensland, Australia Posts: 12,013	Re: Crank pulley ID please Crank Pulley ID ? - Kube

02-12-2022, 06:10 PM	#6
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: Crank pulley ID please Sponsored Links (Register now to hide all advertisements) Don't recall ever seeing a Ford dual pulley with both a wide and narrow width sheave. (possibly commercial) __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

02-12-2022, 07:27 PM	#8
1942deluxe Senior Member Join Date: Jan 2011 Location: Albion, PA Posts: 986	Re: Crank pulley ID please I just bought a NOS 21A 6312 dual sheave pulley (not easy to find and terribly expensive) and both pulleys are 7/8ths wide. Same pulley used on 42-48 Ford cars. Back pulley is 5" and the fan pulley is 5.38" per the green parts book. There is a double sheave pulley listed for earlier commercial with a 5" diameter. 3 5/8" width on mine.

02-13-2022, 06:15 AM	#9
Mac VP Senior Member Join Date: May 2010 Location: Cincinnati, OH Posts: 1,430	Re: Crank pulley ID please I’d guess that some crafty fabricator modified a regular 21A pulley to have the narrow front sheave, allowing him to operate the typical 1950-53 Ford passenger car fan assembly. Or on a modified flathead engine that would have a power steering pump……. I’ve never seen a stock pulley like that. __________________ VANPELT SALES LLC Cincinnati, Ohio Office: 513-724-9486 www.vanpeltsales.com www.classictransmission.com

02-13-2022, 09:22 AM	#10
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,853	Re: Crank pulley ID please It appears the mystery continues. The narrow and wide pulleys are what had initially confused me. This assembly has NOT been modified. __________________ "I can explain it for you. However, I can't understand it for you".

02-13-2022, 10:40 AM	#13
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,723	Re: Crank pulley ID please I've seen and cut-down plenty of the dual wide-belt pulleys . . . have never seen one with a narrow front belt. I wonder if it was an industrial or other application - maybe military???

02-13-2022, 10:52 AM	#14
5851a Senior Member Join Date: Oct 2014 Location: NE Iowa Posts: 1,767	Re: Crank pulley ID please Any chance this could have been for large truck semi-tractor. Narrow belt on air compressor? I'm curious.

02-13-2022, 11:00 AM	#15
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,853	Re: Crank pulley ID please Leave it to me to have something this odd in the "stash" __________________ "I can explain it for you. However, I can't understand it for you".

02-14-2022, 01:12 AM	#16
OldGold360 Senior Member Join Date: Nov 2020 Location: SW WA Posts: 693	Re: Crank pulley ID please Kube, the face of your pulley looks flat, or at least it does in the picture. Is it possible someone flattened it? I’m not sure why though. Maybe someone made it a narrow pulley. Does the narrow pulley have the same shape as a narrow pulley that is known to be good?

02-14-2022, 05:17 AM	#17
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 9,088	Re: Crank pulley ID please I can't comment on what pulley it might be, but wanted to point out the excellence in metal forming that allowed Ford to form those pulleys from a single piece of steel sheet. I imagine it was some sort of spinning/rolling/pressing process. I'd love to see that on video. Mart.