1940 Flathead - Dual Groove Crank Pulley???

[Bored&Stroked]

Hey Gang:

Was wondering if Ford made a dual wide-belt crankshaft pulley for a 1939-41 Ford motor (with the fan mount on the end of it).

I'm pondering building another hopped-up flathead and will need this type of pulley. I have the water pumps, just not the crankshaft pulley. Anybody have one or know if they were made for any sort of truck application?

Like this, but with two sheaves:

Single-Sheave-1940.jpg

Thanks!

PS: I can always 'fabricate' one - using two of them, but would hate to ruin a good pulley just to rob from it.


B&S

[Brian]

Yes; original application was bus.

[Jason in TX]

I have not seen the dual pulley with that front fan snout like a 1940. I do know about the two types of dual pulleys for buses. There was an early dual pulley and late dual pulley that went with the dual pulley water pumps for the 21 stud, front of head mounted, and with the water pumps like the 8BA style.

Buses probably didn't have the fan mounted on the crank like the car did. I dug through all the Antique Auto Supply inventory before the sold off, and saw all the examples of pulleys all NOS sitting on the shelf. I wish I had bought them!

Early...


Later:


Dual pulley water pump early:




Dual pulley water pump later:

[Bored&Stroked]

I've yet to see one either. I have a dual sheave pulley for a 39-53 crank, but it does not have the fan mount. I'm hoping there was such a beast . . . hopefully somebody either has a part number or even better - ONE for me to acquire.

Keep it coming boys . . .

D

[Mac VP]

I think I may have that dual sheave early crank pulley. I'll have a look tomorrow.

[Jason in TX]

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part numbers:
35-38 Truck: 51-6312


Left is earlier 35-38 Truck... Right is later I believe







This is what I put on the 4" crank in my engine...

[russcc]

It seems like your question may have been misunderstood. I believe you are looking for a dual sheave crank pulley with the bolts holes to mount a fan such as the 1940 ford. It would be helpful to know what you are putting into what to make suggestions.

[barnfind08]

Ford did not have what you are looking for. Could maybe have been after market made for some blower in the early days but there was no Ford one.

[Mac VP]

Ahh, I missed the original comment about the pulley having a extended flange for the crankshaft mounted fan. The pulleys I have do NOT have that feature.

[Brian]

Ford did indeed make a double sheave pulley with a flange for mounting a fan. I know for a fact because I had one that I gave to a guy in USA that wanted it in order to fit a supercharger. Exactly like B&S wants... original application was for a bus.

[JM 35 Sedan]

There were dual sheave pulleys with four bolt fan mounts for intake mount generators, and I have one of those, but I have never seen one for mounting on a crankshaft. Would be interesting to see a picture posted of the one Brian had, or one like it.

[old46]

I have a pulley that is the same Tom Senter used on the front of his blown Ardun engine, If you want it it's yours Roger

[Ken/Alabama]

I have this one so apparently they did make them. Can't find any evidence of it being homemade.

[Bored&Stroked]

Originally Posted by Ken/Alabama

I have this one so apparently they did make them. Can't find any evidence of it being homemade.

That is exactly what I was hoping was made my Ford - seemed quite likely knowing the truck/bus applications. I'll send yah a PM . . . maybe it is something that you'll not be using?

THANKS!
B&S

[Bored&Stroked]

THANKS to everybody for jumping on this thread and helping out. I figured that if such a beast was actually produced, that somebody on this site would have seen one, have one or know the part number. Now - if I can get my grubby mits on one! LOL

[Jason in TX]

Hey Ken in Alabama! That's great! Thanks for posting. I've never seen one before. Love learning new things about these old Fords!! Thumbs up.

old46 - I've got an Italmeccanica with a gilmer pulley on the front and would like to put it back to dual pulley. I believe Tom Senter had a 471 or 671 on that Ardun. What type of pulley do you have? dual pulley with a taper?

[Bob C]

Did the 1 1/2 ton have the fan mounted on the crank like the car?

Bob

[Ken/Alabama]

I got this pulley and matching water pumps some 25 years ago when I bought a flathead supercharger. Pulley and pumps were in the box. Sold the supercharger long ago but kept the pulley and pumps. So with that said, the pulley may not be a Ford part but was made by the supercharger co for the conversion. Who knows?

[Bored&Stroked]

Originally Posted by Ken/Alabama

I got this pulley and matching water pumps some 25 years ago when I bought a flathead supercharger. Pulley and pumps were in the box. Sold the supercharger long ago but kept the pulley and pumps. So with that said, the pulley may not be a Ford part but was made by the supercharger co for the conversion. Who knows?

Given the picture and the way it is constructed, sure looks like a Ford part to me. It has the same design and manufacturing "look" that a single sheave pulley does . . just has dual ones.

Fun stuff gang - we all learn more every day!

D

[Bob C]

Will the double groove pulley the green book shows for the 39-41 truck
work 81T-6312.

Bob

[Newc]

H iall; Remember there are those WW2 military engs. Newc

[Bob C]

It doesn't have the fan mount.

Bob

[Brian]

i have previously posted on this thread and stated I'd owned one of these pulleys and given it to a fellow in USA who needed it for a supercharger application. I wrote him on a different forum and below is his response, which gives part numbers etc. Quite helpful;


Hi Brian, I don't get to this site too often but when I do, for some reason, I didn't notice the PM alert.
So that is why I haven't answered your PM. My apology for not responding sooner.
I do go on the "Barn" almost daily and I have been following that thread. I tried a couple of times to post a picture but that ability seems to come and go with me. My pictures are stored on my laptop but it looks like the "Barn" needs something from a storage site. At least that's the way it looks to me. Anyway, the pictures that were posted do indicate the existence of that pulley which you and I know of and have seen. My Ford Chassis Parts Manual (aka, the green bible) for 1938-39-40-41 exclusively, shows that part as:
09B 6312-A [pulley-crankshaft (except DSR bus)]; Model 09B,19B for the years 1940 and 1941. Or
09B 6312-B [pulley-crankshaft (DSR bus only)]; Model 19B for 1941 only. I have no clue what a DSR bus is. The pulley that you gave me is 09B 6312 A1C or G, I can't make out the last digit . It does however, line up with the water pump and blower pulleys which is the important part.
I still have your e-mail address and I'll try so send you some of the pictures of my McCulloch.
I hope you and yours are well and as always, many thanks for the pulley. Regards, Ken

[V8COOPMAN]

"DSR bus".......Detroit Department of Street Railways (DSR). DD