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02-13-2006, 05:56 PM
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#1
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Registered User
Join Date: Apr 2005
Location: Jacksonville Beach Fl.
Posts: 111
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Does anyone have anything good to say about Split fire spark plugs? What is everyone using for the best running engine? 
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[B]03'[/B] [COLOR=Red]Red[/COLOR] [B]Wrangler Rubicon [/B]
[COLOR=Green][B]4" SkyJacker/ Rough Country lift
33"x12.5" BF Goodrich a/t tires
Custom front and rear bumpers[/B][/COLOR]
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02-13-2006, 06:10 PM
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#2
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Registered User
Join Date: Jan 2003
Location: Tampa
Posts: 872
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Our engines run best on simple, cheap plugs (Champion truck plugs)
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'01 TJ 60th Anniv. Ed.
"6 cylinders of gut wrenching torque"
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02-13-2006, 06:22 PM
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#3
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Mobil 1, not Mobile 1
Join Date: Aug 2004
Location: NJ
Posts: 631
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Stock NGK's here.
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2004 Wrangler Rocky Mountain Edition
BF Goodrich 31x10.50 Mud Terrain KM2
Rusty's 3" front springs and Skyjacker 2" rear spacers
Skyjacker Hydro 7000 shocks and steering stabilizer
JKS Quicker Disconnects
Tuffy glove box, full console
WARN D30 skid & Nth Degree Mobility oil pan skid
WARN front and rear Rock Crawler bumpers, winch plate and grill guard
WARN 9.5ti winch w/ Optima Blue Top D34M - X-Line rope & fairlead
KC Daylighter Slimlights on windshield
IPF H4 w/ FatBoy bulbs
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02-13-2006, 06:36 PM
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#4
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Junior Member
Join Date: Jan 2005
Location: Winchester, VA
Posts: 73
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Had Splitfires in an old Blazer. Worthless. Like everyone else has said, just keep it simple. NGK, Bosch, or Champion, nothing fancy.
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02-13-2006, 06:54 PM
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#5
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Registered User
Join Date: Jul 2005
Location: Central Michigan
Posts: 609
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Stick with a regular old Champion Plug. Many like the Truck Plug, I prefer a platinum or double platinum. Personal opinion is the splitfire is just a marketing gimick. 
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[CENTER][COLOR=White]97 Sport [/COLOR] 4.0l Auto D30/D35
RE 3.5 SF, 1" BL, 1" MML, 285/75/16 (33") MTRs, 16x8 MT Classic Locks, 4.10 gears, Lockrite Front, Warn Front and Rear Bumper w/ Tire Carrier, Warn Diff Skids, Rock-it Man Rockers, Jeeperman Front Hoop, M8000, A to Z winch mount, Hella 500s, H4 Conversion
[COLOR="Red"]Former 3.07 Gears Club Member #1[/CENTER][/COLOR]
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02-13-2006, 08:18 PM
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#6
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Registered User
Join Date: Nov 2005
Location: Texas not by choice
Posts: 56
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The only vehicle I've had that ran decent with splitfires was a supercharged 69 camaro.
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02-14-2006, 12:07 AM
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#7
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Registered User
Join Date: Mar 2005
Posts: 122
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NGK= best plugs made today
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02 TJ 35" Toyo's locked both ends, winch, lift, blah blah...
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02-14-2006, 12:19 AM
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#8
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Registered User
Join Date: Feb 2006
Location: Beaumont, TX
Posts: 1,476
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I really haven't heard that much (good) about those splitfires... Stick with the simple plugs like everyone else sais...
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Coming soon: 2000 Jeep Sport (modifications soon after) :-)
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02-14-2006, 04:28 PM
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#9
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Registered User
Join Date: Jan 2006
Location: Ogden,UT
Posts: 43
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Like mentioned above the splitfires are a marketing gimick. Think about it the electricity is going to take the easiest path to ground, not 2 different paths, so your only going to be using one of the two paths. And as far as the flame front the other one will just get in the way. I stick to a plain jane NGK, they are cheaper in most cases and they are one of the best plugs out there (not that there is a whole lot of difference anyway).
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02-14-2006, 04:35 PM
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#10
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Registered User
Join Date: Nov 2002
Location: Mentor, Ohio
Posts: 206
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No matter what, you are going to get only one arc. The "possible" advantage of a splitfire is that if your plugs are fouled, you "might" get a spark from a lower resistance spot. Only because there are more spots from which an arc may jump.
But properly tuned engines do not foul plugs....right?
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"Blessed is one who gives without remembering and receives without forgetting." Rabbi Eleazar, 1250 AD
93 YJ project. 4.0L, stick
MJ-7 re-body, Banks header, 2.5 " pipe, low resistence cat, Flowmaster. K&N filter thru a snorkel.
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02-14-2006, 04:42 PM
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#11
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Registered User
Join Date: Mar 2005
Location: Washington State
Posts: 5,981
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champion #4412's
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Quote:
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It's hard to say no to yoo-hoo, the name literally beckons...
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Don't mind me, I'm just another FNG around here...
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02-14-2006, 04:44 PM
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#12
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Registered User
Join Date: May 2005
Location: Utah
Posts: 2,865
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actually split fire is a good plug when used correctly.they were the only thing to get my old 79 Bronco with a 460 in to pass emisisions.the plugs like to be used in conjuction with a high voltage ignition system like a MSD box and hot coil.
as for the 4.0 the best plug in the plain jane plug like everybody else has mentioned.the fancy Platnium plugs are bad for the 4.0 they tend to burn very hot and actually make the engine ping from pre-ignition.
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02-14-2006, 05:34 PM
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#13
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Registered User
Join Date: Aug 2005
Location: Detroit
Posts: 122
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Quote:
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Originally Posted by berd
Like mentioned above the splitfires are a marketing gimick. Think about it the electricity is going to take the easiest path to ground, not 2 different paths, so your only going to be using one of the two paths. And as far as the flame front the other one will just get in the way. I stick to a plain jane NGK, they are cheaper in most cases and they are one of the best plugs out there (not that there is a whole lot of difference anyway).
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If this were the case, why would electricty travel through two resistors wired in parallel??
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2005 Willys TJ
2" REBB, 1.25" JKS BL, 1" JKS BMML, 33x10.5x15 BFG AT, ******* LED tail lights, 55w backup lights, Compustar Remote Starter / Alarm
Semper Fidelis
Fortes Fortuna Juvat
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02-14-2006, 05:40 PM
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#14
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Registered User
Join Date: Oct 2003
Location: Westchester, NY
Posts: 5,561
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I just installed Champion 4412's at 28k miles because of their overwhelming popularity on this and other forums
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02-14-2006, 05:47 PM
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#15
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Registered User
Join Date: Aug 2005
Location: north NJ
Posts: 424
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Quote:
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Originally Posted by Caesars0331
If this were the case, why would electricty travel through two resistorts wired in series??
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I think you mean 2 resistors wired in parallel, and yes it will but it you measured the resistance of each resistor individually and then checked the resistance with them wired parallel it would be lower than each of the resistors separately, I'm not an electrical engineer so I can't tell you why that is so but it is done in wiring systems for a purpose. But that's not the same as spark plugs either. A spark going to a spark plug is almost like static electricity.
But back to the original post, save your money and just by regular plugs.
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bluehdmc
North NJ
2005 Stone White Rubicon Unlimited
White Jeep Club #53
1999 Harley Road King
2006 BMW R1200RT
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Splitfire spark plugs?
