The Ford Barn

russcc · 08-20-2015, 06:20 PM

I have a Ford reconditioned 21A distributor, but the mechanical advance is an 11A. Is that advance mechanism compatible with the later engines ?

Terry,OH · 08-21-2015, 06:26 AM

The 11A weights and advance were used with the 21A distributor.

Walt Dupont--Me. · 08-21-2015, 06:49 AM

The dist with the 11A guts is the best Henry ever made. Better than any of those $$$$$ so called performance dist. Walt

scooder · 08-21-2015, 07:40 AM

Ain't that the truth!!!
Martin.

Bruce Lancaster · 08-21-2015, 08:46 AM

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The 11A stuff was released in 1941 on the last version of the '37-41 type helmet distributor...the faster and longer advance curve was the only change then. later, the 11A parts replaced the 68 type parts used on the older version for replacement use...
The '41 setup can be identified on assembled distributors because advance type is stamped on drive end of shaft, 68 or 11.
The 68 setup was a hangover from the slightly rare partial production 68 distributor used on some '36 Fords...
The same parts were kept in use '42-48 assembled onto the later short shaft in 21A and 59A distributors.

08-20-2015, 06:20 PM	#1
russcc Senior Member Join Date: May 2010 Posts: 2,871	21A distributor ? I have a Ford reconditioned 21A distributor, but the mechanical advance is an 11A. Is that advance mechanism compatible with the later engines ?

08-21-2015, 06:26 AM	#2
Terry,OH Senior Member Join Date: May 2010 Posts: 4,751	Re: 21A distributor ? The 11A weights and advance were used with the 21A distributor.

08-21-2015, 06:49 AM	#3
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: 21A distributor ? The dist with the 11A guts is the best Henry ever made. Better than any of those $$$$$ so called performance dist. Walt

08-21-2015, 07:40 AM	#4
scooder Senior Member Join Date: Jul 2010 Posts: 2,593	Re: 21A distributor ? Ain't that the truth!!! Martin.

08-21-2015, 08:46 AM	#5
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: 21A distributor ? Sponsored Links (Register now to hide all advertisements) The 11A stuff was released in 1941 on the last version of the '37-41 type helmet distributor...the faster and longer advance curve was the only change then. later, the 11A parts replaced the 68 type parts used on the older version for replacement use... The '41 setup can be identified on assembled distributors because advance type is stamped on drive end of shaft, 68 or 11. The 68 setup was a hangover from the slightly rare partial production 68 distributor used on some '36 Fords... The same parts were kept in use '42-48 assembled onto the later short shaft in 21A and 59A distributors.