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Old 10-27-2012, 09:18 AM   #1
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Spark plugs

What kind of spark plugs are you guys running? I was thinking about trying the E3 diamond fire plugs in my car but I'm unsure if they are worth it. I'm running autolites right now in my gt40p heads.
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Old 10-27-2012, 09:19 AM   #2
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Auto lite 25's.. Proven for decades..

Dunno anything about those E3's
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Old 10-27-2012, 10:15 AM   #3
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I don't know anything either. But I do in now that most fancy plugs aren't what they are cracked up to be. I also run autolites. I would just make sure you have proper gap.

I would also avoid any plug that has multiple straps/prongs. Because imo they are just decreasing exposure to the mixture.

There is also an article in the stickies for some spark plug mods. They maybe shorten the life of the plug but will better expose the spark. Also indexing the plugs is a good idea if you feel lime hassling with it.
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Old 10-27-2012, 10:40 AM   #4
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Quote:
Originally Posted by dreamstang
I don't know anything either. But I do in now that most fancy plugs aren't what they are cracked up to be. I also run autolites. I would just make sure you have proper gap.

I would also avoid any plug that has multiple straps/prongs. Because imo they are just decreasing exposure to the mixture.

There is also an article in the stickies for some spark plug mods. They maybe shorten the life of the plug but will better expose the spark. Also indexing the plugs is a good idea if you feel lime hassling with it.
Might have to tinker with them a bit, gonna have all winter heh. Still have to modify a 5/8 spark plug wrench so I can get all my plugs out
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Old 10-27-2012, 03:22 PM   #5
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Quote:
Originally Posted by 90mustangLX View Post
What kind of spark plugs are you guys running? I was thinking about trying the E3 diamond fire plugs in my car but I'm unsure if they are worth it. I'm running autolites right now in my gt40p heads.
Autolites FTW!

Most of those "gimmick" plugs are just that, a gimmick to get your money and nothing more.

I did a lot of research on plugs years ago and the only ones worth using IMO are the fine tipped iridium plugs, use them on boosted engines.
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Old 10-28-2012, 10:33 PM   #6
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E3$ are definetly not worth it I got some at a discount so I figured wth why not as was dissapointed went back to auto lites
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Old 10-28-2012, 10:40 PM   #7
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My engines boosted and I still use Autolites I just had to switch to a colder plug.
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Old 10-28-2012, 10:42 PM   #8
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Ngk iridiums here
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Old 10-29-2012, 12:24 AM   #9
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Ngk iridiums here
Same here
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Old 10-29-2012, 08:43 PM   #10
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Motocraft, autolite is crap IMHO
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Old 10-29-2012, 09:14 PM   #11
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Motocraft, autolite is crap IMHO
They have worked flawlessly for me for years.

I do know slowstang has had a bad batch. But they could have been damaged after production.
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Old 10-29-2012, 09:34 PM   #12
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Quote:
Originally Posted by dreamstang

They have worked flawlessly for me for years.

I do know slowstang has had a bad batch. But they could have been damaged after production.
Yes I did get some bad ones, still think they are a great product too.
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Old 10-29-2012, 09:44 PM   #13
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Quote:
Originally Posted by Billymich
Motocraft, autolite is crap IMHO
You do realize they are one in the same.
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Old 10-29-2012, 09:55 PM   #14
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Originally Posted by 93slowstang

You do realize they are one in the same.
LoL
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Old 10-30-2012, 12:33 AM   #15
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You do realize they are one in the same.
Not quite my friend, Motocraft sources parts from Honeywell but not all Ford Motocraft parts come from them, including some spark plugs. I do agree however that I tend to be biased...
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Old 10-30-2012, 05:42 AM   #16
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Quote:
Originally Posted by dreamstang

They have worked flawlessly for me for years.

I do know slowstang has had a bad batch. But they could have been damaged after production.
I've never had a bad batch with autolites but I did have 1 that went bad after only 15 miles in a 89 ford ranger I used to have. Basically melted the electrode and arch together, never could figure out how that happened but I have autolites for years with no problems since that one.
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Old 10-30-2012, 11:14 AM   #17
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Autolites! I wouldn't run another plug! Serve excellent in my old Fairlane and 5.0
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