Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 06-26-2019, 07:34 AM   #1
Shootinok
Junior Member
 
Shootinok's Avatar
 
Join Date: Mar 2019
Location: Oklahoma (near Tulsa) USA
Posts: 9
Default 8BA Heartbreak


So a running flathead doesn't mean it's not a cracked flathead.

I drove this baby into the shop, pulled it and took to the machine shop.
got this sad news... several cracks


I'm heartbroken
Shootinok is offline   Reply With Quote
Old 06-26-2019, 07:54 AM   #2
Tim Ayers
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 3,052
Default Re: 8BA Heartbreak

I hear you and share your pain. I went through 5 blocks recently. One engine, also ran prior to my purchase, was cracked and two of the rod bearing throws on the crank were so out of round, you can see they were egg shaped. Floating bearings were split in two on both. Motor ran quite and cool. Amazing.

If the crack in your block is accessible (looks like it is), it can be pinned and the bore sleeved, but the folks who do this type of work are getting few and far between.

The cracks between bolts and water holes are no issue and quite common. The "deadly"
crack on your block is the valve seat to bore. From what I've found and read, they normally crack in the exhaust seat area due to lean mixture and a overheated charge.

Don't panic yet and do a little research to see if you can find someone who can repair it.

Heavy machine repair/machine shops would be a good place to start since those type of motors are very expensive and they try to fix them before replacing them.

Good luck. It absolutely stinks when you get this news.

Last edited by Tim Ayers; 06-26-2019 at 08:18 AM.
Tim Ayers is online now   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 06-26-2019, 08:41 AM   #3
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,492
Default Re: 8BA Heartbreak

If the machineshop was worried about the cracks going from stud to water jacket they ain´t used to flatheads...
If only one valvepocket is cracked and not to far down the valvepocket repair it !
flatheadmurre is online now   Reply With Quote
Old 06-26-2019, 05:37 PM   #4
Shootinok
Junior Member
 
Shootinok's Avatar
 
Join Date: Mar 2019
Location: Oklahoma (near Tulsa) USA
Posts: 9
Default Re: 8BA Heartbreak

I talked to Mike at H&H Flatheads today and he says he can fix it!!
Super stoked
Shootinok is offline   Reply With Quote
Old 06-26-2019, 08:38 PM   #5
Low50s
Junior Member
 
Join Date: Jun 2019
Location: New Hampton IA
Posts: 16
Default Re: 8BA Heartbreak

I am chewing my nails. I dropped my block off at the machine shop a week ago and need to hear if my block is good or not!
Glad to hear it can be repaired!
Low50s is offline   Reply With Quote
Old 06-27-2019, 11:17 AM   #6
supereal
Senior Member
 
supereal's Avatar
 
Join Date: Jul 2014
Location: Iowa
Posts: 1,359
Default Re: 8BA Heartbreak

Those cracks are repairable if the machine shop knows their stuff. We drill the cracks and install threaded pins before resurfacing the deck. In all rebuilds we install new valve seats as a part of the rebuilding process. Over the years we have found that virtually all old Ford blocks have cracks. When we visited the Rouge plant years ago, we saw a mountain of rejected blocks. It is true some cracks cannot be fixed if they are directly into the water jacket or at the bottom of a cylinder, but only disassembly and Magnafluxing can tell.
supereal is offline   Reply With Quote
Old 06-28-2019, 04:59 AM   #7
Ritzy1
Senior Member
 
Ritzy1's Avatar
 
Join Date: Feb 2016
Location: Braintree, MA
Posts: 178
Default Re: 8BA Heartbreak

Mine had some similar cracks and areas around a head stud that needed to be repaired. Shop took care of it. All it takes is $$$!
Attached Images
File Type: jpg J and M cleaned block photo #1.JPG (57.7 KB, 99 views)
File Type: jpg J and M cleaned block photo #3.JPG (58.8 KB, 98 views)
Ritzy1 is offline   Reply With Quote
Old 06-28-2019, 05:27 AM   #8
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 5,106
Default Re: 8BA Heartbreak

"Ritzy1" - To be clear; did you have the "Part number" cracks (the ones between the headbolt holes and the water passages) repaired?

Last edited by tubman; 06-28-2019 at 04:05 PM.
tubman is offline   Reply With Quote
Old 06-28-2019, 07:38 AM   #9
Tim Ayers
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 3,052
Default Re: 8BA Heartbreak

Quote:
Originally Posted by tubman View Post
"Ritzy1" - To be clear; did you have the "Part number" cracks (the ones between the headbolt holes and the water passages repaired?
Tub

I was wondering the same thing.
Tim Ayers is online now   Reply With Quote
Old 06-29-2019, 09:00 AM   #10
Frank Miller
Senior Member
 
Frank Miller's Avatar
 
Join Date: May 2010
Location: Auburn, MA
Posts: 1,662
Default Re: 8BA Heartbreak

Braintree Ma, so I'm thinking if he had J&M do the block then Frank casey stitched it.

https://www.jandm-machine.com/metalStitching.html
__________________
“The technique of infamy is to start two lies at once and get people arguing heatedly over which is true.” ~ Ezra Pound
Frank Miller is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:44 PM.