C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Split-fire spark plugs

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Old Sep 21, 2002 | 10:11 PM
  #1  
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Default Split-fire spark plugs

Split-fire sprak plugs, supposely they make a difference....Fact or Fiction? I'm leaning towards fiction. What do you think?
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Old Sep 21, 2002 | 10:26 PM
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Default Re: Split-fire spark plugs (KyleBst264)

From what I've heard they are junk or should I be a bit nicer and say fiction.
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Old Sep 21, 2002 | 11:38 PM
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Default Re: Split-fire spark plugs (poppy)

I ran splitfires for a while.. didnt see any improvement, but didnt see any bad effects either.
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Old Sep 21, 2002 | 11:55 PM
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Default Re: Split-fire spark plugs (KyleBst264)

I would not waste my time on them. Some of the mags bragged about their benifits. If they were that good, you would think that every body would be using them. I decided that they were a disingenuous company when they enhanced their "split fire" elixir technology and invented the "split fire plug wires", you get two wires wrapped around ...blah blah blah.... :bs . Just how stupid do they think we are. What intelligence I have doesn't like to be insulted.
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Old Sep 22, 2002 | 01:13 AM
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Default Re: Split-fire spark plugs (KyleBst264)

Don't ferget to install the throttle body airfoil while yer at it. :rolleyes:


Jus kidding :jester
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Old Sep 22, 2002 | 05:53 AM
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Default Re: Split-fire spark plugs (KyleBst264)

Just get the AC Delcos and cut back the ground electrodes for a little more power and even better mileage.
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Old Sep 22, 2002 | 08:12 AM
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Default Re: Split-fire spark plugs (65Z01)

Didnt see any difference, Buy AC Decl rapid fire spark plugs
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Old Sep 22, 2002 | 08:35 AM
  #8  
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Default Re: Split-fire spark plugs (jtfrog)

I tried them and did not like them. I did not see any power improvements.

:seeya
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Old Sep 22, 2002 | 10:37 PM
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Default Re: Split-fire spark plugs (KyleBst264)

Snake oil. If you're not going to try the cut back mod, get the rapidfires. They have a wider gap. My car runs sweet with them.
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Old Sep 22, 2002 | 11:14 PM
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Default Re: Split-fire spark plugs (65Z01)

Just get the AC Delcos and cut back the ground electrodes for a little more power and even better mileage.

That's exactly what I was told by a well known "Tuner" a couple of years back. :yesnod:
Nothin fancy. I for one, do not need a 100K mile set of plugs. I want to know what's going on in there a long time before that. :)
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Old Sep 23, 2002 | 12:54 AM
  #11  
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Default Re: Split-fire spark plugs (LT-IV)

Only way to get multiple spark in one shot is with an MSD, if I understand it right. I still like NGK plugs from my dirt-bike days, top quality.
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Old Sep 23, 2002 | 01:20 AM
  #12  
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Default Re: Split-fire spark plugs (mooncricket)

i think the spark is just going to the one with the less resistance but who knows :crazy:
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Old Sep 23, 2002 | 12:28 PM
  #13  
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Default Re: Split-fire spark plugs (KyleBst264)

:bs Pure snake oil. Delcos' with cut back electrodes are the hot lick.
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Old Sep 23, 2002 | 12:39 PM
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Default Re: Split-fire spark plugs (DON M)

Snake Oil
Don't waste your $.
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Old Sep 23, 2002 | 04:11 PM
  #15  
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Default Re: Split-fire spark plugs (KyleBst264)

I always thought split-fires were junk. Right now I have AC-Delco plugs, and I never knew this trick about widening the gap untill now, does that really make a big difference? What could I expect if I did this? Thanks
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Old Sep 23, 2002 | 04:30 PM
  #16  
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Default Re: Split-fire spark plugs (KyleBst264)

If you mean the cut back electrodes, I read about it in several SBC books and saw 8-10hp gain.

As for widening the gap, only if you have a hotter coil that puts out enough voltage to initiate the spark.


[Modified by 65Z01, 2:34 PM 9/23/2002]
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Old Sep 23, 2002 | 05:22 PM
  #17  
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Default Re: Split-fire spark plugs (65Z01)

Splitfires theory isnt 2 sparks but 1 to the the point of least resistance allowing less misfires, with having the fork design it allows quicker flame travel same as cutting back the elctrode to allow the flame front to travel with less blockage. As far as larger spark I agree with the stronger coil theory. #1 cause of ignition module failure is too large of a spark gap due to wear or improper gapping during installation. if the coil isnt strong enough the spark ends up firing to the cylinder wall or plug threads causing voltage spikes on the ground system detroying your module.
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Old Sep 23, 2002 | 08:29 PM
  #18  
fullboogie
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Default Re: Split-fire spark plugs (jefft84)

I'm using AC Delco's with a .055" gap, and an MSD 6AL. Runs great, and the plugs have perfect color.
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Old Sep 23, 2002 | 08:36 PM
  #19  
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Default Re: Split-fire spark plugs (KyleBst264)

I installed some when I refreshed the headlight fluid a few months ago
:jester
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