The Ford Barn

JayJay · 04-20-2021, 05:44 PM

All - what's the "proper" plug gap for the Motorcraft TT10? I've seen 0.032" and 0.035", both from reputable sources. Thought I'd throw it out here to even more reputable sources.

Thanks.

JayJay

SteveE · 04-20-2021, 06:00 PM

Depends on Model A or B engine. I have even heard of gapping as high as .38 on my Model B.

Look for "Spark Plug Info and Dissection in the ford vintage" for in-depth look.

It depends on compression, i.e., HC heads or standard. Set gap to .30 for HC head and .32 or 35 for standard according to the thread.

I always run .35 on my Model B engine but probably need to reduce it to .32 or .30.

SteveE · 04-20-2021, 06:03 PM

Of course I meant .030, .032, .035 and so forth. Sorry.

Patrick L. · 04-21-2021, 07:23 AM

Either gap setting will work just fine.

Oldgearz · 04-21-2021, 09:33 AM

Sponsored Links (Register now to hide all advertisements)

I run .032 with my 5.5 head.

04-20-2021, 05:44 PM	#1
JayJay Senior Member Join Date: Jan 2020 Location: SF Bay Area Posts: 1,068	Plug gap TT10? All - what's the "proper" plug gap for the Motorcraft TT10? I've seen 0.032" and 0.035", both from reputable sources. Thought I'd throw it out here to even more reputable sources. Thanks. JayJay __________________ JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan

04-20-2021, 06:03 PM	#3
SteveE Member Join Date: Aug 2018 Location: AZ Posts: 31	Re: Plug gap TT10? Of course I meant .030, .032, .035 and so forth. Sorry.

04-21-2021, 07:23 AM	#4
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Plug gap TT10? Either gap setting will work just fine.

04-21-2021, 09:33 AM	#5
Oldgearz Senior Member Join Date: Aug 2020 Location: Sagle, Idaho Posts: 359	Re: Plug gap TT10? Sponsored Links (Register now to hide all advertisements) I run .032 with my 5.5 head.