The Ford Barn

GB SISSON · 12-12-2019, 10:14 PM

I went down to the shop after work to do the usual battle with this new to me AA cut down truck. Before I could deal with the issues I wanted to address The starter spun but didn't turn the flywheel... So I started it with the crank..... But I want electric start. I pulled the starter and found a sheared off bolt. My wife was due home in 20 minutes ... A bolt had sheared off in the drive. 12 v conversion done by PO ,,, any surprise?> Looking at the green bible I see the drives are similar. I have a half dozen Flathead v8 starters here in a heap. Are the bolts the same? Do I* need to order some starter drive bolts or do I already have some? Wife and I in the middle of dinner now............

jw hash · 12-13-2019, 12:15 AM

the Model A starter drive used 5/16" bolts and they break all the time. the V8 starter drive uses 3/8" bolts, I run the V8 drives and have not broke a bolt in many years. check and see what bolts you have. if you are running a 6 volt starter on 12 Volts it is going to engage hard and that is hard on the drives and or the bolts.

GB SISSON · 12-13-2019, 09:15 AM

Quote:

Originally Posted by jw hash

the Model A starter drive used 5/16" bolts and they break all the time. the V8 starter drive uses 3/8" bolts, I run the V8 drives and have not broke a bolt in many years. check and see what bolts you have. if you are running a 6 volt starter on 12 Volts it is going to engage hard and that is hard on the drives and or the bolts.

So, a V8 drive will slide onto the A starter shaft? No redrill or tap?

Bob Bidonde · 12-13-2019, 09:55 AM

With 3/8" diameter Bendix bolts properly installed with the special lock-washers and a new spring, I have been running 12V in my Coupe with a stock starter motor for many years without issue.

GB SISSON · 12-13-2019, 12:20 PM

Thanks! Just came in from the shop. Direct replacement. Wish all repairs and modifications were that straight forward. That starter drive interchanges from '28-'53. The year my mom was born until the year that I was born!

Bob C · 12-13-2019, 12:27 PM

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Be sure to get the broken bolt out of the flywheel housing.

Bob

12-12-2019, 10:14 PM	#1
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 4,911	Sheared starter drive bolt I went down to the shop after work to do the usual battle with this new to me AA cut down truck. Before I could deal with the issues I wanted to address The starter spun but didn't turn the flywheel... So I started it with the crank..... But I want electric start. I pulled the starter and found a sheared off bolt. My wife was due home in 20 minutes ... A bolt had sheared off in the drive. 12 v conversion done by PO ,,, any surprise?> Looking at the green bible I see the drives are similar. I have a half dozen Flathead v8 starters here in a heap. Are the bolts the same? Do I* need to order some starter drive bolts or do I already have some? Wife and I in the middle of dinner now............ __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

12-13-2019, 12:15 AM	#2
jw hash Senior Member Join Date: May 2010 Location: Auburn Washington Posts: 2,552	Re: Sheared starter drive bolt the Model A starter drive used 5/16" bolts and they break all the time. the V8 starter drive uses 3/8" bolts, I run the V8 drives and have not broke a bolt in many years. check and see what bolts you have. if you are running a 6 volt starter on 12 Volts it is going to engage hard and that is hard on the drives and or the bolts.

12-13-2019, 09:55 AM	#4
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 3,462	Re: Sheared starter drive bolt With 3/8" diameter Bendix bolts properly installed with the special lock-washers and a new spring, I have been running 12V in my Coupe with a stock starter motor for many years without issue. __________________ Bob Bidonde

12-13-2019, 12:20 PM	#5
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 4,911	Re: Sheared starter drive bolt Thanks! Just came in from the shop. Direct replacement. Wish all repairs and modifications were that straight forward. That starter drive interchanges from '28-'53. The year my mom was born until the year that I was born! __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

12-13-2019, 12:27 PM	#6
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,741	Re: Sheared starter drive bolt Sponsored Links (Register now to hide all advertisements) Be sure to get the broken bolt out of the flywheel housing. Bob

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