The Ford Barn

Thix · 10-03-2022, 09:58 AM

Does anyone have a picture of the cross member that the front engine mount goes through. I need to know the size of the hole for the front motor mount. Someone has welded a washer on mine.

Conaway2 · 10-03-2022, 12:23 PM

Here’s a pic of the crossmember on my ‘29 sport coupe.

Thix · 10-03-2022, 12:30 PM

That helps, mine is a 29 Tudor should be the same. Thanks

rotorwrench · 10-03-2022, 02:24 PM

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The front mount needs to be able to move a bit or it can be overstressed enough to crack the crossmember or break the yoke. Ford changed the crossmember several times before they settled on the final configuration. When the first yoke type mount was developed, they used a small hole for the center stud. They then came out with a service bulletin to enlarge the hole there more. They tried a brass hat bushing to seat into the hole and arrest movement there but this started the cracking and breakage on rough roads so they did away with the brass bushing and substituted a large area washer in its place. This turned out to be the most reliable set up yet even though it wasn't a really good way to handle the situation. It allowed movement but would limit the movement from getting too excessive.

The hole was changed from 3/4" to 7/8" in December of 1928 so that is the final size.

10-03-2022, 09:58 AM	#1
Thix Junior Member Join Date: Aug 2022 Posts: 15	Engine cross member Does anyone have a picture of the cross member that the front engine mount goes through. I need to know the size of the hole for the front motor mount. Someone has welded a washer on mine.

10-03-2022, 12:30 PM	#3
Thix Junior Member Join Date: Aug 2022 Posts: 15	Re: Engine cross member That helps, mine is a 29 Tudor should be the same. Thanks

10-03-2022, 02:24 PM	#4
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,437	Re: Engine cross member Sponsored Links (Register now to hide all advertisements) The front mount needs to be able to move a bit or it can be overstressed enough to crack the crossmember or break the yoke. Ford changed the crossmember several times before they settled on the final configuration. When the first yoke type mount was developed, they used a small hole for the center stud. They then came out with a service bulletin to enlarge the hole there more. They tried a brass hat bushing to seat into the hole and arrest movement there but this started the cracking and breakage on rough roads so they did away with the brass bushing and substituted a large area washer in its place. This turned out to be the most reliable set up yet even though it wasn't a really good way to handle the situation. It allowed movement but would limit the movement from getting too excessive. The hole was changed from 3/4" to 7/8" in December of 1928 so that is the final size. Last edited by rotorwrench; 10-03-2022 at 02:57 PM.