The Ford Barn

Epetek1 · 08-21-2016, 06:37 AM

what are the correct bolts length and thread for the two bolts that connect the Zenith carb to the manifold?
Thanks- Pete

Tom Wesenberg · 08-21-2016, 07:07 AM

A-20718 are 5/16-18 x 3/4.

Parts Price List is another one of those must have books for every Model A owner, and I think I usually forget to mention it when I list the 5 or 6 books every owner should have.

Mike V. Florida · 08-21-2016, 11:48 PM

The better vendors also have sizes listed in their catalogs.

Richard Lorenz · 08-22-2016, 05:06 PM

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Many who use pot metal carburetors like the Tillotson and Sears mistakenly use the same cap screw as for the Zenith cast iron carburetors. The pot metal carbs need to have cap screws that go clear through the pot metal flange or you will eventually strip out the threads. I had one situation that had thick flanges that need a cap screw 1 1/4 inches long.

08-21-2016, 06:37 AM	#1
Epetek1 Senior Member Join Date: May 2010 Posts: 148	bolts for carburator what are the correct bolts length and thread for the two bolts that connect the Zenith carb to the manifold? Thanks- Pete

08-21-2016, 07:07 AM	#2
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: bolts for carburator A-20718 are 5/16-18 x 3/4. Parts Price List is another one of those must have books for every Model A owner, and I think I usually forget to mention it when I list the 5 or 6 books every owner should have.

08-21-2016, 11:48 PM	#3
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: bolts for carburator The better vendors also have sizes listed in their catalogs. __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

08-22-2016, 05:06 PM	#4
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Re: bolts for carburator Sponsored Links (Register now to hide all advertisements) Many who use pot metal carburetors like the Tillotson and Sears mistakenly use the same cap screw as for the Zenith cast iron carburetors. The pot metal carbs need to have cap screws that go clear through the pot metal flange or you will eventually strip out the threads. I had one situation that had thick flanges that need a cap screw 1 1/4 inches long.