The Ford Barn

Dave Castle · 07-25-2017, 06:22 PM

Is a 59AB block bored 80 over, that does not seem cracked, but with a 20/20 crank worth hanging on to, or is it just junk ? It will need either bored further or re-sleeved to standard, the crank will also need to be turned further.

Thank u, Dave

48fordnut · 07-25-2017, 06:26 PM

Have bored several blocks to 3 3/8 . .020/.020 is that where the crank is now or when it will be turned? I ran a .030/.030 crank in a high winding drag eng. No ill effects.

Dave Castle · 07-25-2017, 06:28 PM

20/20 is where the crank is now.

mike in tucson · 07-25-2017, 06:53 PM

Have the cylinder walls sonic checked....shoot for at least 0.100" wall thickness. Make sure they measure at several locations around the cylinder and at the top, middle, and bottom of wall. Cheap test to see if boring it will work.

KiWinUS · 07-25-2017, 06:54 PM

Should be real good
Enjoy

qmdv · 07-25-2017, 07:20 PM

Sponsored Links (Register now to hide all advertisements)

It is junk. Leaving for Carmel in the morning.

I have a 59 block with 30 over 3 5/16 and a Merc crank.

Tim

Ken/Alabama · 07-25-2017, 08:25 PM

Bore it to 3 3/8. You'll love it !!

tubman · 07-25-2017, 08:56 PM

Quote:

Originally Posted by Ken/Alabama

Bore it to 3 3/8. You'll love it !!

In my best Clint Eastwood voice : "Are ya' feelin' lucky? Well, are ya'"

Dave Castle · 07-26-2017, 10:55 AM

Thanks guys, guess I will clean it up & put it in the shed for a future project.

rotorwrench · 07-26-2017, 12:42 PM

The only thing that a person has to be careful of is whether it's a 239 block or a 221 block. Ford made a 41A 221 block side by side with the 59A 239 blocks and they tend to have the 59 on the back bell. The 41A 221 blocks do have characteristics of the pre-war blocks but that 59 on the back can fool you sometimes. Knowing 221 characteristics can help but a sonic cylinder wall thickness test is good insurance.

Grinding a crank depends on whether anyone supplied the oversize bearings it has to go down to. A good crank grinder knows how to properly radius the journals so it will work with the larger number undersizes on the journals.

Seth Swoboda · 07-26-2017, 12:49 PM

Keep all of it. Even with the crank at 30/30 it may polish out nicely. I had a crank that was standard and the bearing journals polished up and remained standard when it went back together.

Ol' Ron · 07-26-2017, 02:10 PM

Never saw a 59 block that wouldn't go to 3 5/16 abd Egge makes an exelent 3 ring piston for this. Block as is worth $300 plus as is

07-25-2017, 06:22 PM	#1
Dave Castle Senior Member Join Date: Jun 2017 Location: Carmel, Ca Posts: 284	59ab block question Is a 59AB block bored 80 over, that does not seem cracked, but with a 20/20 crank worth hanging on to, or is it just junk ? It will need either bored further or re-sleeved to standard, the crank will also need to be turned further. Thank u, Dave

07-25-2017, 06:26 PM	#2
48fordnut Senior Member Join Date: Sep 2010 Location: warner robins ga 31088 Posts: 494	Re: 59ab block question Have bored several blocks to 3 3/8 . .020/.020 is that where the crank is now or when it will be turned? I ran a .030/.030 crank in a high winding drag eng. No ill effects.

07-25-2017, 06:28 PM	#3
Dave Castle Senior Member Join Date: Jun 2017 Location: Carmel, Ca Posts: 284	Re: 59ab block question 20/20 is where the crank is now.

07-25-2017, 06:53 PM	#4
mike in tucson Senior Member Join Date: Dec 2010 Location: Tucson, AZ Posts: 177	Re: 59ab block question Have the cylinder walls sonic checked....shoot for at least 0.100" wall thickness. Make sure they measure at several locations around the cylinder and at the top, middle, and bottom of wall. Cheap test to see if boring it will work.

07-25-2017, 06:54 PM	#5
KiWinUS Senior Member Join Date: May 2010 Location: Charlotte NC KiWi-L100 available here Posts: 3,264	Re: 59ab block question Should be real good Enjoy

07-25-2017, 07:20 PM	#6
qmdv Senior Member Join Date: Dec 2012 Location: Payette, ID Posts: 946	Re: 59ab block question Sponsored Links (Register now to hide all advertisements) It is junk. Leaving for Carmel in the morning. I have a 59 block with 30 over 3 5/16 and a Merc crank. Tim

07-25-2017, 08:25 PM	#7
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,395	Re: 59ab block question Bore it to 3 3/8. You'll love it !!

07-26-2017, 10:55 AM	#9
Dave Castle Senior Member Join Date: Jun 2017 Location: Carmel, Ca Posts: 284	Re: 59ab block question Thanks guys, guess I will clean it up & put it in the shed for a future project.

07-26-2017, 12:42 PM	#10
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,410	Re: 59ab block question The only thing that a person has to be careful of is whether it's a 239 block or a 221 block. Ford made a 41A 221 block side by side with the 59A 239 blocks and they tend to have the 59 on the back bell. The 41A 221 blocks do have characteristics of the pre-war blocks but that 59 on the back can fool you sometimes. Knowing 221 characteristics can help but a sonic cylinder wall thickness test is good insurance. Grinding a crank depends on whether anyone supplied the oversize bearings it has to go down to. A good crank grinder knows how to properly radius the journals so it will work with the larger number undersizes on the journals.

07-26-2017, 12:49 PM	#11
Seth Swoboda Senior Member Join Date: May 2010 Location: Southern Illinois Posts: 4,079	Re: 59ab block question Keep all of it. Even with the crank at 30/30 it may polish out nicely. I had a crank that was standard and the bearing journals polished up and remained standard when it went back together.

07-26-2017, 02:10 PM	#12
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: 59ab block question Never saw a 59 block that wouldn't go to 3 5/16 abd Egge makes an exelent 3 ring piston for this. Block as is worth $300 plus as is