The Ford Barn

Frank Miller · 03-23-2021, 10:44 AM

I guess the broken bolts came out east.Here is a picture of a bolt that came out of an 8ba I'm doing vs the ones that broke. No testament as to what happened but wonder if Ford used different bolts.

Ronnieroadster · 03-23-2021, 04:55 PM

Ford had two types of main bearing bolts the short shouldered type and the full length shoulder type. Having taken a lots of latter blocks apart its not something that sticks in your head which type was in which block was it 8-BA or the 1-BA makes you wonder. Also a prior rebuild could add to the mystery of what bolt came in what block.
Ronnieroadster

itslow · 03-24-2021, 09:18 AM

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Don't use split "lock" washers, as they provide zero locking function and can adversely affect bolt tension.

Those "new" bolts also look like standard hardware store fasteners, not the appropriate shouldered type as noted.

03-23-2021, 04:55 PM	#2
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,524	Re: Main bearing blowup and fasteners Ford had two types of main bearing bolts the short shouldered type and the full length shoulder type. Having taken a lots of latter blocks apart its not something that sticks in your head which type was in which block was it 8-BA or the 1-BA makes you wonder. Also a prior rebuild could add to the mystery of what bolt came in what block. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH

03-24-2021, 09:18 AM	#3
itslow Senior Member Join Date: May 2010 Location: Central Iowa Posts: 691	Re: Main bearing blowup and fasteners Sponsored Links (Register now to hide all advertisements) Don't use split "lock" washers, as they provide zero locking function and can adversely affect bolt tension. Those "new" bolts also look like standard hardware store fasteners, not the appropriate shouldered type as noted. __________________ Mike Wanted: - '32-34 Open Cab Pickup (RPU) parts and documents/articles/info - ARDUN parts