Gland rings counter bore

[Larryejoh]

Does the block have a counter bore for the gland rings like the exhaust manifold do? My block doesn’t show any sign of any counter bore.

 

[Bob C]

See page 312 of the Service Bulletins. Looks like the counter bore ended in January 1929.

 

[Y-Blockhead]

See page 312 of the Service Bulletins. Looks like the counter bore ended in January 1929.

I believe they only stopped using them for a short time then started using them again. My late 1930 block is machined for them.

From Bratton's catalog.
The 4 rings that seat into the manifold and block to prevent leaks. Ford discontinued using these for a brief time in early 1929. If the manifold or block has been resurfaced, the width of the gland rings will need to be reduced by the same amount.
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[Larryejoh]

Thanks. I think my block was made mid year in 29.

 

[Steve Plucker]

This article might help you understand your block better:

http://plucks329s.org/pdf/engineblock/CYLINDER_BLOCK_CHANGE_DESCRIPTION.pdf

Pluck

 

[Bob Bidonde]

Hi Pluck. Your article about engines is a fantastic piece. Thanks for sharing it.

 

[Larryejoh]

Thanks for the article.

 

[JoeCB]

Steve, Thanks for posting that info... well done and very informative. From one that had a background in automotive engine manufacturing, each one of those seemingly small changes brought back (bad) memories, of piles of paper work "change orders", foundry pattern changes (many - many patterns) and hard tool and fixture changes on the machining line.
Joe B

 

[d.j. moordigian]

Odd,...my B/C blocks have them..