The Ford Barn

The "A" Team · 09-16-2022, 03:20 PM

Hi everyone,

This may seem like a stupid question, but I can't find the answer anywhere online or in the big mechanics handbook (it doesn't even cover the throttle assembly in there).

What size are the bolts that attach the throttle assembly to the engine?

I know you know what it looks like, but I'll attach a pic anyway.

Thanks, as usual.

Marshall V. Daut · 09-16-2022, 04:16 PM

7/16" coarse thread x 1 3/4" length with 5/8" hex head. I usually don't use a lock washer on the driver's side because it sometimes pushes the bolt head too far back, interfering with the accelerator linkage's full travel.
Marshall

mercman from oz · 09-16-2022, 05:09 PM

The "A" Team asks "What size are the bolts that attach the throttle assembly to the engine?"

MAG · 09-16-2022, 05:15 PM

They are included in Bratton's P/N 9070 Flywheel to Housing Bolts.
Or Snyder's P/N A-6378-MB

rotorwrench · 09-16-2022, 06:15 PM

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There are variations in the throttle quadrant assemblies so there may be problems with the bolts that are currently available. A person would have to purchase them and try them out. I purchased from Snyder's on these and they work for my mid 1929 set up. Some of these have shims in the stack up and that can further complicate things if the shims are odd on the flywheel housing attachment to the engine block.

09-16-2022, 04:16 PM	#2
Marshall V. Daut Senior Member Join Date: Apr 2011 Location: Davenport, Iowa Posts: 2,112	Re: Need bolt size for throttle assembly 7/16" coarse thread x 1 3/4" length with 5/8" hex head. I usually don't use a lock washer on the driver's side because it sometimes pushes the bolt head too far back, interfering with the accelerator linkage's full travel. Marshall

09-16-2022, 05:09 PM	#3
mercman from oz Senior Member Join Date: May 2012 Location: Queensland, Australia Posts: 10,372	Re: Need bolt size for throttle assembly The "A" Team asks "What size are the bolts that attach the throttle assembly to the engine?"

09-16-2022, 05:15 PM	#4
MAG Senior Member Join Date: May 2010 Location: Austin, Texas Posts: 925	Re: Need bolt size for throttle assembly They are included in Bratton's P/N 9070 Flywheel to Housing Bolts. Or Snyder's P/N A-6378-MB __________________ I noticed the harder I work the luckier I get!

09-16-2022, 06:15 PM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: Need bolt size for throttle assembly Sponsored Links (Register now to hide all advertisements) There are variations in the throttle quadrant assemblies so there may be problems with the bolts that are currently available. A person would have to purchase them and try them out. I purchased from Snyder's on these and they work for my mid 1929 set up. Some of these have shims in the stack up and that can further complicate things if the shims are odd on the flywheel housing attachment to the engine block.