The Ford Barn

Glenn Thoreson · 04-28-2011, 01:25 PM

I need a crankshaft for an 81A, 85 HP Ford flathead. These were, according to Ford literature of the day, produced in 37/38. There's lots of carry over to about 1941. This crank has the small rod journals (1.999") and the mains are the same as the 59A (2.138"). I want one that will grind to no more than .030 under size. No rusty swamp monsters, please. I've got enough junk parts.

Gary in La. · 04-28-2011, 02:27 PM

I sent you a PM with details,Gary

Gary in La. · 04-28-2011, 03:34 PM

At no time were the mains 2.138"
Start 1939 85HP only 91A6303 Main 2.499" Rod 1.999" Slinger type
Start 1939 95HP only 99A6303 Main 2.499" Rod 2.139" Slinger type
Start 1942 100HP 29A6303 Main 2.499" Rod 2.139" Rope type

I think this is right in it's brief form. If not some of the engine people will jump in I hope.
I have a good crank that the mains are at.010" under and now check at 2.488" with the rod journals checking at 1.986".
I have a PM to you with contact info if interested.

Glenn Thoreson · 04-28-2011, 09:38 PM

Gary is right. I got my numbers mixed up. Th rod journals for the 59A shaft are indeed 2.138 to 2.139 epding on which specs you're reading. Ford specs that I have say 2.138. The ins are the same for both 81A and 59A engines. The crank I need is for the 85 HP with 1.999 rod journals.
Gary, I got your message and will contact you by email. Thanks.

LANCE PIEROVICH · 04-29-2011, 12:53 PM

i have the rotating mass for a 59 ab all in good shape

Glenn Thoreson · 04-30-2011, 01:45 PM

Sponsored Links (Register now to hide all advertisements)

I want to thank everyone who took the time to respond. However, The block I'm working with has a huge crack in the water jacket, inside the lifter chamber. Not repairable. I'm sad now.

04-28-2011, 01:25 PM	#1
Glenn Thoreson Senior Member Join Date: May 2010 Posts: 203	Crankshaft wanted City: Cokeville State: WY I need a crankshaft for an 81A, 85 HP Ford flathead. These were, according to Ford literature of the day, produced in 37/38. There's lots of carry over to about 1941. This crank has the small rod journals (1.999") and the mains are the same as the 59A (2.138"). I want one that will grind to no more than .030 under size. No rusty swamp monsters, please. I've got enough junk parts.

04-28-2011, 02:27 PM	#2
Gary in La. Senior Member Join Date: May 2010 Location: Louisiana Posts: 866	Re: Crankshaft wanted I sent you a PM with details,Gary

04-28-2011, 03:34 PM	#3
Gary in La. Senior Member Join Date: May 2010 Location: Louisiana Posts: 866	Re: Crankshaft wanted At no time were the mains 2.138" Start 1939 85HP only 91A6303 Main 2.499" Rod 1.999" Slinger type Start 1939 95HP only 99A6303 Main 2.499" Rod 2.139" Slinger type Start 1942 100HP 29A6303 Main 2.499" Rod 2.139" Rope type I think this is right in it's brief form. If not some of the engine people will jump in I hope. I have a good crank that the mains are at.010" under and now check at 2.488" with the rod journals checking at 1.986". I have a PM to you with contact info if interested. Last edited by Gary in La.; 04-28-2011 at 04:20 PM. Reason: Measurent correction

04-28-2011, 09:38 PM	#4
Glenn Thoreson Senior Member Join Date: May 2010 Posts: 203	Re: Crankshaft wanted Gary is right. I got my numbers mixed up. Th rod journals for the 59A shaft are indeed 2.138 to 2.139 epding on which specs you're reading. Ford specs that I have say 2.138. The ins are the same for both 81A and 59A engines. The crank I need is for the 85 HP with 1.999 rod journals. Gary, I got your message and will contact you by email. Thanks.

04-29-2011, 12:53 PM	#5
LANCE PIEROVICH Junior Member Join Date: Apr 2011 Posts: 2	Re: Crankshaft wanted i have the rotating mass for a 59 ab all in good shape

04-30-2011, 01:45 PM	#6
Glenn Thoreson Senior Member Join Date: May 2010 Posts: 203	Re: Crankshaft wanted Sponsored Links (Register now to hide all advertisements) I want to thank everyone who took the time to respond. However, The block I'm working with has a huge crack in the water jacket, inside the lifter chamber. Not repairable. I'm sad now.