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What plugs?! #1401158
03/12/13 12:41 AM 03/12/13 12:41 AM
Joined: Jan 2011
Posts: 58
Illinois
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bad543dart Offline OP
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bad543dart  Offline OP
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Joined: Jan 2011
Posts: 58
Illinois
I have a 543 stroker with 14 to 1 comp. and eddy victor heads runnin methanol injection with a bird catcher hat , the question is what is the best plug and gap to run? Thanks

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Re: What plugs?! [Re: bad543dart] #1401159
03/12/13 01:58 AM 03/12/13 01:58 AM
Joined: Jun 2004
Posts: 6,780
Alabama
Mopar-Al Offline
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Mopar-Al  Offline
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Posts: 6,780
Alabama
methanol, I gap my plugs at 26 sometimes .024


NGK 5671A-8 or a 9 but its a bit hotter
Re: What plugs?! [Re: Mopar-Al] #1401160
03/12/13 02:10 AM 03/12/13 02:10 AM
Joined: Jul 2004
Posts: 19,318
State of confusion
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Thumperdart Offline
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Quote:

methanol, I gap my plugs at 26 sometimes .024


NGK 5671A-8 or a 9 but its a bit hotter

You mean the 8`s r hotter than the 9`s right?

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: What plugs?! [Re: Thumperdart] #1401161
03/12/13 02:17 AM 03/12/13 02:17 AM
Joined: Jun 2004
Posts: 6,780
Alabama
Mopar-Al Offline
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Mopar-Al  Offline
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Alabama
I thought the 8 is colder than a 9. My 9s are still in the box. No fouling out tho isnt 10 the hottest?
Re: What plugs?! [Re: Mopar-Al] #1401162
03/12/13 03:59 AM 03/12/13 03:59 AM
Joined: Aug 2003
Posts: 43,232
Bend,OR USA
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Cab_Burge Offline
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Cab_Burge  Offline
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Joined: Aug 2003
Posts: 43,232
Bend,OR USA
Quote:

I thought the 8 is colder than a 9. My 9s are still in the box. No fouling out tho isnt 10 the hottest?

No, Thumper is correct on NGK, the smaller last numbers are hotter, the bigger numbers are colder, IE a -8 is hotter than a -9. A -5 is really hot

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: What plugs?! [Re: Cab_Burge] #1401163
03/12/13 04:13 AM 03/12/13 04:13 AM
Joined: Dec 2006
Posts: 3,667
Arizona
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Chris'sBarracuda Offline
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Joined: Dec 2006
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Arizona
Quote:

Quote:

I thought the 8 is colder than a 9. My 9s are still in the box. No fouling out tho isn't 10 the hottest?

No, Thumper is correct on NGK, the smaller last numbers are hotter, the bigger numbers are colder, IE a -8 is hotter than a -9. A -5 is really hot




YES..^^^Correct...NGK... -10 is coldest..



Chris..

Re: What plugs?! [Re: Chris'sBarracuda] #1401164
03/12/13 09:11 AM 03/12/13 09:11 AM
Joined: Jun 2004
Posts: 6,780
Alabama
Mopar-Al Offline
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Mopar-Al  Offline
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Posts: 6,780
Alabama
Thanks for the correction. I run 8's in mine and have a new box of 9's I actually thought the 9's were hotter.
Re: What plugs?! [Re: Mopar-Al] #1401165
03/12/13 01:54 PM 03/12/13 01:54 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
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Thumperdart Offline
I Live Here
Thumperdart  Offline
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Joined: Jul 2004
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Quote:

Thanks for the correction. I run 8's in mine and have a new box of 9's I actually thought the 9's were hotter.

Confusing isn`t it?...

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: What plugs?! [Re: Thumperdart] #1401166
03/12/13 04:21 PM 03/12/13 04:21 PM
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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MRMOPAR622 Offline
top fuel
MRMOPAR622  Offline
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
I have run and liked the Champion C59CX for years,I have just switch to the Autolite AR3933(same heat range) and only like them better because I can read the plugs better,than with the Champions on alcohol.No difference in ET between the 2 at all.The NGK R5671-9 is the same heat range plug,have not run them yet not sure if I will like the full length electrode.

"To Be The Man'You Have Got To Beat The Man" "T/D and Pro-Bracket Racer"

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