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Spark plug cross reference?
#2684385
08/04/19 05:58 PM
08/04/19 05:58 PM
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Joined: Oct 2003
Posts: 3,999 South Park, Pa.
68LAR
OP
master
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OP
master
Joined: Oct 2003
Posts: 3,999
South Park, Pa.
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Been searching for an hour for a cross reference for Accel 414S to Autolite. Does anyone know how the 414's would match up with an Autolite 3924? Colder or hotter? By the way, the 3/16" difference in length don't do much for header clearance!!!
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: Spark plug cross reference?
[Re: Cab_Burge]
#2684442
08/04/19 08:22 PM
08/04/19 08:22 PM
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Joined: Oct 2003
Posts: 3,999 South Park, Pa.
68LAR
OP
master
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OP
master
Joined: Oct 2003
Posts: 3,999
South Park, Pa.
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Look at both plugs and compare the center porclyn insulators, the bigger one is hotter . Not sure I understand.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: Spark plug cross reference?
[Re: 68LAR]
#2684480
08/04/19 10:35 PM
08/04/19 10:35 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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how far out they protrude from flush with the steel shell, A longer distance means the heat has to travel further to be dissipated back into the core so that extended tip runs hotter.
live every 24 hour block of time like it's your last day on earth
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Re: Spark plug cross reference?
[Re: Cab_Burge]
#2684605
08/05/19 10:23 AM
08/05/19 10:23 AM
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Joined: Oct 2003
Posts: 3,999 South Park, Pa.
68LAR
OP
master
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OP
master
Joined: Oct 2003
Posts: 3,999
South Park, Pa.
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Thanks for the replies. I guess a better way to ask my question is, is the Accel 0414 hotter or colder than the Accel 0416? Checking the porcelain of both the 0414's and the 3924's, they look identical.
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: Spark plug cross reference?
[Re: 68LAR]
#2684628
08/05/19 11:09 AM
08/05/19 11:09 AM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Bigger last number is hotter on Accels since day one is what I remember. That new chart shows that also Take a look at a Autolite 3923 compared to both of the other ones you have now It is colder than the 3924
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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