The Ford Barn

46woodie · 05-17-2018, 01:45 PM

My flathead for my 46 V8 is using the 216 Autolite plugs. What is a good gap for these? Are the Champion H10's a better choice,same gap as autolites? Thanks

DD931 · 05-17-2018, 01:56 PM

I'm old-fashioned. To me, Champions belong in Fords, Autolites in Plymouths and ACs in Chevys. Nowadays, of course, we are much more ecumenical!! I don't know any reason why the plug gap should be different among brands. If you like Autolites, go for it!!!

Mart · 05-17-2018, 02:06 PM

I Use the Autolites, with no more than .027" for the gap. I had a round of problems with the HT side of the ignition and always like to limit the HT load by not going mad on the plug gap.

Mart.

BUBBAS IGNITION · 05-17-2018, 02:25 PM

Plug gap goes with engine not the ignition.........flatheads run .025

Ggmac · 05-17-2018, 02:46 PM

.025"

4dFord/SC · 05-17-2018, 03:34 PM

Sponsored Links (Register now to hide all advertisements)

The Autolite 437's I recently installed in my Offenhauser heads were .025 right out of the box.

revkev6 · 05-17-2018, 04:39 PM

Quote:

Originally Posted by BUBBAS IGNITION

Plug gap goes with engine not the ignition.........flatheads run .025

Huh.. that contradicts what msd's I instructions say... higher compression the tighter the gap... started at .050 and dropped to .045 when I bumped compression

46woodie · 05-17-2018, 05:35 PM

This engine is bone stock,going with .025. Thanks everyone!

05-17-2018, 01:45 PM	#1
46woodie Senior Member Join Date: Jun 2010 Posts: 366	Autolite 216 gap? My flathead for my 46 V8 is using the 216 Autolite plugs. What is a good gap for these? Are the Champion H10's a better choice,same gap as autolites? Thanks

05-17-2018, 01:56 PM	#2
DD931 Senior Member Join Date: May 2010 Location: PA Poconos Posts: 723	Re: Autolite 216 gap? I'm old-fashioned. To me, Champions belong in Fords, Autolites in Plymouths and ACs in Chevys. Nowadays, of course, we are much more ecumenical!! I don't know any reason why the plug gap should be different among brands. If you like Autolites, go for it!!!

05-17-2018, 02:06 PM	#3
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 9,088	Re: Autolite 216 gap? I Use the Autolites, with no more than .027" for the gap. I had a round of problems with the HT side of the ignition and always like to limit the HT load by not going mad on the plug gap. Mart.

05-17-2018, 02:25 PM	#4
BUBBAS IGNITION Senior Member Join Date: May 2010 Location: SPEEDWAY INDIANA Posts: 4,148	Re: Autolite 216 gap? Plug gap goes with engine not the ignition.........flatheads run .025 __________________ If it Makes Spark, we do it !!!! www.bubbasignition.com [email protected]

05-17-2018, 02:46 PM	#5
Ggmac Senior Member Join Date: Jul 2016 Location: Lake worth Florida Posts: 1,376	Re: Autolite 216 gap? .025"

05-17-2018, 03:34 PM	#6
4dFord/SC Senior Member Join Date: May 2010 Location: Columbia, SC Posts: 1,579	Re: Autolite 216 gap? Sponsored Links (Register now to hide all advertisements) The Autolite 437's I recently installed in my Offenhauser heads were .025 right out of the box.

05-17-2018, 05:35 PM	#8
46woodie Senior Member Join Date: Jun 2010 Posts: 366	Re: Autolite 216 gap? This engine is bone stock,going with .025. Thanks everyone!