Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 09-02-2010, 10:31 AM   #1
lenmissy
Senior Member
 
Join Date: May 2010
Posts: 389
Default spark plug gap model a

what is the gap fpr champion spark plugs they are at 35 th
lenmissy is offline   Reply With Quote
Old 09-02-2010, 10:35 AM   #2
31Tudor
Senior Member
 
31Tudor's Avatar
 
Join Date: May 2010
Location: North Carolina
Posts: 394
Default Re: spark plug gap model a

Depends on what Champion plugs you have. 3X plugs were gapped at 35
31Tudor is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-02-2010, 10:57 AM   #3
Big D
Senior Member
 
Big D's Avatar
 
Join Date: Aug 2010
Location: Huntsville, AL
Posts: 102
Default Re: spark plug gap model a

Also looks to depend on when.. Tech Speaking Vol 6, page 58-82 gives from .025 (1928), .030 and .035 depending on which version of 3X was used..
I think that 31T was right with .035 unless you're having issues then try .030
Big D is offline   Reply With Quote
Old 09-02-2010, 10:57 AM   #4
marc hildebrant
Senior Member
 
marc hildebrant's Avatar
 
Join Date: May 2010
Location: Cape Cod
Posts: 1,107
Default Re: spark plug gap model a

I use motorcraft plugs, with a 0.035 inch gap.

Marc
marc hildebrant is offline   Reply With Quote
Old 09-02-2010, 02:33 PM   #5
Purdy Swoft
Senior Member
 
Purdy Swoft's Avatar
 
Join Date: May 2010
Location: Alabama
Posts: 6,652
Default Re: spark plug gap model a

Quote:
Originally Posted by lenmissy View Post
what is the gap fpr champion spark plugs they are at 35 th
I use a gap of .035 on my model A's no matter what spark plug that I use. I prefer Champion W18 or The old C4 two piece plugs. A gap of .035 will give the best spark and any gap greater will shorten coil life unless you run electronic ignition.
Purdy Swoft is offline   Reply With Quote
Old 05-03-2018, 04:08 PM   #6
jbwell10
Junior Member
 
Join Date: Dec 2016
Location: Rincon,GA 31326
Posts: 1
Default Re: spark plug gap model a

Model A '28 What is the torque for the spark plugs?
jbwell10 is offline   Reply With Quote
Old 05-03-2018, 05:16 PM   #7
BILL WILLIAMSON
Senior Member
 
BILL WILLIAMSON's Avatar
 
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,418
Default Re: spark plug gap model a

Plug Torque--25 Ft Lbs.
Plug Gap---The thickness of a WORN Nickel.
Point Gap--The thickness of a WORN Dime.
Bill Serious
__________________
"THE ASSISTANT GURU OF STUFF"
BILL WILLIAMSON is offline   Reply With Quote
Old 05-03-2018, 07:08 PM   #8
sphanna
Senior Member
 
sphanna's Avatar
 
Join Date: Jun 2010
Location: Polk City, Iowa
Posts: 484
Default Re: spark plug gap model a

Perhaps .030 if you have a Hi Comp head.
__________________
Steve Hanna, Polk City, IA
sphanna is offline   Reply With Quote
Old 05-17-2018, 11:21 PM   #9
Mike V. Florida
Senior Member
 
Mike V. Florida's Avatar
 
Join Date: May 2010
Location: South Florida
Posts: 13,743
Send a message via AIM to Mike V. Florida
Default Re: spark plug gap model a

Look here:


http://www.fordgarage.com/pages/brum...kplugnotes.htm
__________________
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
Mike V. Florida is offline   Reply With Quote
Old 05-18-2018, 07:00 PM   #10
WHN
Senior Member
 
Join Date: Mar 2017
Location: Old Lyme Connecticut
Posts: 826
Default Re: spark plug gap model a

I have always used .035 on any plug we’ve used in Model A’s.

Less has carboned up, more has caused miss fires at higher speeds. .035 seems just right. Enjoy.
WHN is offline   Reply With Quote
Old 05-18-2018, 08:25 PM   #11
Purdy Swoft
Senior Member
 
Purdy Swoft's Avatar
 
Join Date: May 2010
Location: Alabama
Posts: 6,652
Default Re: spark plug gap model a

The new old stock Champion C4 plugs that I have used at times on some of my cars recommended a gap of .032 . I ran -run the C4 plugs on .035 .The wider gap works good for me , no matter what spark plug that I use . Some are more interested in a slower idle and feel that narrower gap smooths and helps slow idle . Ford was concerned that higher compression would blow out the spark . I've never had that problem . The Pertronix Flamethrower coils that I use recommend opening up the spark plug gap even wider .
Purdy Swoft is offline   Reply With Quote
Old 10-10-2018, 09:04 PM   #12
Aretino
Junior Member
 
Join Date: Jul 2018
Location: Dallas, TX, Angola, IN
Posts: 8
Default Re: spark plug gap model a

What part number Pertronics Flamethrower coil do you use.
Aretino is offline   Reply With Quote
Old 10-11-2018, 08:25 AM   #13
Patrick L.
Senior Member
 
Patrick L.'s Avatar
 
Join Date: May 2010
Location: Upstate NY and western Florida
Posts: 4,774
Default Re: spark plug gap model a

Quote:
Originally Posted by BILL WILLIAMSON View Post
Plug Torque--25 Ft Lbs.
Plug Gap---The thickness of a WORN Nickel.
Point Gap--The thickness of a WORN Dime.
Bill Serious





Hehehehe, when growing up it was said point gap was set with a match book cover. I've been wondering how we do it now since you can't find match books anymore. Hehehehehe.
Patrick L. is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 06:56 AM.