The Ford Barn

32truck · 12-03-2021, 10:12 AM

Well while I have the distributor out waiting for charlieNY to check it out, on to the next issue. My blower pulley is damaged because some numb nuts didnt have it tight and wallowed out the keyway. Any ideas where to get something like this? I know it's a v belt on a blower but I'd rather not completely change the belt set up.

Andy

Sent from my SM-N986U using Tapatalk

Bored&Stroked · 12-03-2021, 11:02 AM

You'll probably need to have one custom made at a machine shop. Not a hard thing to do - but they'll need exact measurements on the shaft and keyway.

marko39 · 12-03-2021, 11:56 AM

What is the pully diameter? And bore? Does it have to be aluminum ?

Brian · 12-03-2021, 11:58 AM

Or, [machine work again] simply bore it out, press in a sleeve, [ideally steel - more durable], scotch key it in place, bore and key it to suit...

solidaxle · 12-03-2021, 12:36 PM

Consider yourself lucky it didn't fly off going down the road.

32truck · 12-03-2021, 12:37 PM

Sponsored Links (Register now to hide all advertisements)

Quote:

Originally Posted by marko39

What is the pully diameter? And bore? Does it have to be aluminum ?

Bore .640 pulley diameter 4inches. Nah doesn't have to be aluminum.

Sent from my SM-N986U using Tapatalk

32truck · 12-03-2021, 12:38 PM

Quote:

Originally Posted by solidaxle

Consider yourself lucky it didn't fly off going down the road.

No doubt!

Sent from my SM-N986U using Tapatalk

32truck · 12-03-2021, 12:40 PM

Quote:

Originally Posted by Brian

Or, [machine work again] simply bore it out, press in a sleeve, [ideally steel - more durable], scotch key it in place, bore and key it to suit...

Yeah I do have a lathe, so I was thinking about that. I don't have an end mill though. Still may attempt this.

Sent from my SM-N986U using Tapatalk

32truck · 12-03-2021, 12:41 PM

Quote:

Originally Posted by Bored&Stroked

You'll probably need to have one custom made at a machine shop. Not a hard thing to do - but they'll need exact measurements on the shaft and keyway.

I've been calling around to a few machine shops without any luck yet.

Sent from my SM-N986U using Tapatalk

marko39 · 12-03-2021, 01:51 PM

Quote:

Originally Posted by 32truck

Bore .640 pulley diameter 4inches. Nah doesn't have to be aluminum.

Sent from my SM-N986U using Tapatalk

That is an odd bore size .640 = 41/64. Is that the shaft size? If it is 5/8 ( .625) I can probably help. Worst case would be boring out the 5/8 to 41/64.

32truck · 12-03-2021, 02:27 PM

Quote:

Originally Posted by marko39

That is an odd bore size .640 = 41/64. Is that the shaft size? If it is 5/8 ( .625) I can probably help. Worst case would be boring out the 5/8 to 41/64.

Yep Shaft size is .640

Sent from my SM-N986U using Tapatalk

Bored&Stroked · 12-03-2021, 02:50 PM

If it was mine, I'd make a steel blower drive flange - similar to a crankshaft blower pulley flange. The flange would have bolts to bolt on an aluminum pulley. This way you can change pulley sizes quite easily. The flange should have a centering ridge on it (like a crankshaft blower pulley).

Bored&Stroked · 12-03-2021, 02:51 PM

Also, you might consider using a dual-belt lower pulley - if it will clear your cross-member. It is much better to have multiple belts than just one. If you're going to the trouble of coming up with a new pulley drive system, might as well make it better.

Pete · 12-03-2021, 03:10 PM

...

32truck · 12-03-2021, 03:48 PM

Quote:

Originally Posted by Bored&Stroked

If it was mine, I'd make a steel blower drive flange - similar to a crankshaft blower pulley flange. The flange would have bolts to bolt on an aluminum pulley. This way you can change pulley sizes quite easily. The flange should have a centering ridge on it (like a crankshaft blower pulley).

Definitely like this idea. Actually this makes the most sense. Definitely looking into this. Thanks so much. I agree this is a poor design.

Sent from my SM-N986U using Tapatalk

32truck · 12-03-2021, 03:50 PM

Quote:

Originally Posted by Bored&Stroked

Also, you might consider using a dual-belt lower pulley - if it will clear your cross-member. It is much better to have multiple belts than just one. If you're going to the trouble of coming up with a new pulley drive system, might as well make it better.

I have about a 16th of an inch clearance with the crossmember unfortunately.

Sent from my SM-N986U using Tapatalk

marko39 · 12-03-2021, 04:27 PM

The last piece of the puzzle is what size is keeway and are you using an A belt or B belt?

32truck · 12-03-2021, 05:48 PM

Quote:

Originally Posted by marko39

The last piece of the puzzle is what size is keeway and are you using an A belt or B belt?

Not sure on the size of the keyway. I will measure it over the weekend. Its at my shop. Thanks.

Sent from my SM-N986U using Tapatalk

Ggmac · 12-03-2021, 06:36 PM

Cant you cut another slot say at 180 degrees . If its not timing anything , Ive done this on a few shafts that were messed up .

32truck · 12-03-2021, 06:39 PM

Quote:

Originally Posted by Ggmac

Cant you cut another slot say at 180 degrees . If its not timing anything , Ive done this on a few shafts that were messed up .

Great suggestion, but unfortunately the entire hole got wallowed out.

Sent from my SM-N986U using Tapatalk

12-03-2021, 10:12 AM	#1
32truck Junior Member Join Date: Nov 2021 Location: Tampa bay Posts: 28	Aluminum pulley for M90 blower. Well while I have the distributor out waiting for charlieNY to check it out, on to the next issue. My blower pulley is damaged because some numb nuts didnt have it tight and wallowed out the keyway. Any ideas where to get something like this? I know it's a v belt on a blower but I'd rather not completely change the belt set up. Andy Sent from my SM-N986U using Tapatalk

12-03-2021, 11:02 AM	#2
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,723	Re: Aluminum pulley for M90 blower. You'll probably need to have one custom made at a machine shop. Not a hard thing to do - but they'll need exact measurements on the shaft and keyway.

12-03-2021, 11:56 AM	#3
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,114	Re: Aluminum pulley for M90 blower. What is the pully diameter? And bore? Does it have to be aluminum ?

12-03-2021, 11:58 AM	#4
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,998	Re: Aluminum pulley for M90 blower. Or, [machine work again] simply bore it out, press in a sleeve, [ideally steel - more durable], scotch key it in place, bore and key it to suit... __________________ Unfortunately, two half wits don't make a whole wit!

12-03-2021, 12:36 PM	#5
solidaxle Senior Member Join Date: Mar 2011 Location: upstate NY Posts: 517	Re: Aluminum pulley for M90 blower. Consider yourself lucky it didn't fly off going down the road.

12-03-2021, 02:50 PM	#12
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,723	Re: Aluminum pulley for M90 blower. If it was mine, I'd make a steel blower drive flange - similar to a crankshaft blower pulley flange. The flange would have bolts to bolt on an aluminum pulley. This way you can change pulley sizes quite easily. The flange should have a centering ridge on it (like a crankshaft blower pulley).

12-03-2021, 02:51 PM	#13
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,723	Re: Aluminum pulley for M90 blower. Also, you might consider using a dual-belt lower pulley - if it will clear your cross-member. It is much better to have multiple belts than just one. If you're going to the trouble of coming up with a new pulley drive system, might as well make it better.

12-03-2021, 03:10 PM	#14
Pete BANNED Join Date: May 2010 Location: Wa. Posts: 5,423	Re: Aluminum pulley for M90 blower. ... Last edited by Pete; 12-03-2021 at 08:27 PM.

12-03-2021, 04:27 PM	#17
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,114	Re: Aluminum pulley for M90 blower. The last piece of the puzzle is what size is keeway and are you using an A belt or B belt?

12-03-2021, 06:36 PM	#19
Ggmac Senior Member Join Date: Jul 2016 Location: Lake worth Florida Posts: 1,375	Re: Aluminum pulley for M90 blower. Cant you cut another slot say at 180 degrees . If its not timing anything , Ive done this on a few shafts that were messed up .