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CC Advertisers
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09-02-2002, 07:43 PM
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CC Member
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Join Date: Jun 2001
Location: Washington DC Metro (Virginia),
VA
Cobra Make, Engine: Classic Roadsters, Tweaked 351W, T-5Z, CRII Tech Support Team.
Posts: 1,895
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Not Ranked
Spark plugs?
Generally, most GM's like AC plugs, and most Fords like Autolites.
MSD recently nixed the idea of platinum tipped plugs with MSD ignitions. Most folks here use MSD or somebody's CD ignition. And most folks here are not using stock Ford heads. There must be some preference for brand, type, and gap setting.
TFS head calls for an Autolite 3924. This is not a Ford plug, but it is an Autolite, and runs fairly well. Gapped at .050". Splitfire 392D runs fairly well also. But $50 worth of Bosch +4's were pulled in a week, so these motors do have their preferences.
What are you folks using for brand and gap setting with MSD ignition?
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09-02-2002, 10:29 PM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Autolite 3924 gapped at .035.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-03-2002, 06:18 AM
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CC Member
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Join Date: Mar 2000
Location: Fairfield, NJ, USA,
NJ
Cobra Make, Engine: A & C, 351W, Tremec 3550. Exiled Member: Club Cranky
Posts: 5,897
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Not Ranked
352W bored 40 over with AFR heads and MSD Digital 6 w/Pro billet dist. Champion RC9YC gapped at 50. This was recommended by AFR. Car runs great.
Roscoe
__________________
Roscoe
"Crisis occurs when women and cattle get excited!"....James Thurber
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09-03-2002, 08:03 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
Run the autolite 3924 plugs at 45-50. Most aftermarket ignition manufacturer's recommend against platinum, split tip, U-grooved, or any other newfangled plug design. You are better to buy four sets of regular autolites and replace them more frequently than to buy $5 plugs.
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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09-03-2002, 05:21 PM
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CC Member
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Join Date: Jun 2001
Location: Washington DC Metro (Virginia),
VA
Cobra Make, Engine: Classic Roadsters, Tweaked 351W, T-5Z, CRII Tech Support Team.
Posts: 1,895
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Not Ranked
Thanks fellas.
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09-03-2002, 05:54 PM
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CC Member
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Join Date: Mar 2002
Location: Benton,
AR
Cobra Make, Engine:
Posts: 48
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Not Ranked
Most of the advantages to platinums are long life in a nonperformance engine. They last longer, letting the car makers tout their "longer times between tuneups".
__________________
Age and knowledge don't always come together. Sometimes you just get the age...
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09-03-2002, 06:26 PM
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CC Member
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Join Date: Dec 2001
Location: Olympia/Lacey,
WA
Cobra Make, Engine: West Coast. 514 / 6 speed Richmond overdrive
Posts: 1,981
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Not Ranked
Had originally planned to use...
The split tip platinum types, but I have since tried them in my Yamaha V-Max bike, and they are not any better than a good NGK plug. The split types have some other problems with electrode wear too, I am told by my bike mechanic.
I plan to use AC or Autolite plugs, gapped as wide as feasable/reasonable.
I will have the MSD ignition and blaster 2 coil
__________________
James Madison, father of the Constitution, said, "If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy." He also said, "No nation could preserve its freedom in the midst of continual warfare..."
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