Does plug gap really make a differance?

5ohCOUPE · 10-20-2003, 01:09 PM

I was just wondering if the plug gap makes that much differance on a N/A motor setup. I know on a N2O setup it is critical. Any opinion would be helpfull.

QuantumMotorsports · 10-20-2003, 01:30 PM

Yeah man, plug gap can make a huge difference. I have a not so bright friend who installed plugs without gapping them, they turned out to be at about .034 instead of the usual .054 or so. And the car ran like a dawg. It bogged down and had hardly any power. Gapped the plugs, ran like a champ. Some people gap to a bit over the recommended gap to increase the spark voltage, this makes the engine run better to a certain point, but also reduces coil life as well as cap and rotor life.

USMC302 · 10-23-2003, 11:18 AM

Once you start adjusting compression ratio's on N/A motors, plug gap gets very important as well.

10-20-2003, 01:09 PM	#1
5ohCOUPE Registered Member Join Date: Sep 2001 Location: ORANGE PARK FL. USA Posts: 208	Does plug gap really make a differance? I was just wondering if the plug gap makes that much differance on a N/A motor setup. I know on a N2O setup it is critical. Any opinion would be helpfull. __________________ 91 LX COUPE, 3.73 gears, 2 1/2 inch H-Pipe, 1 5/8 MAC long tube headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam,1.7 TFS Rockers, TFS Track Heat heads, TFS Track Heat intake, T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 190 GPH in tank fuel pump. And more to come.

10-20-2003, 01:30 PM	#2
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Yeah man, plug gap can make a huge difference. I have a not so bright friend who installed plugs without gapping them, they turned out to be at about .034 instead of the usual .054 or so. And the car ran like a dawg. It bogged down and had hardly any power. Gapped the plugs, ran like a champ. Some people gap to a bit over the recommended gap to increase the spark voltage, this makes the engine run better to a certain point, but also reduces coil life as well as cap and rotor life. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

10-23-2003, 11:18 AM	#3
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Once you start adjusting compression ratio's on N/A motors, plug gap gets very important as well. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help me make this 88 gt handle better	RoushRacing6N17	Windsor Power	3	11-20-2003 09:43 AM
Got the ACT & ECT sensors. Where do they plug into and will it help me get started?	Stang_ROTY	Windsor Power	3	07-25-2001 09:21 PM
Spark Plug Wire Looms.........	bcinyuz	Windsor Power	2	07-04-2001 10:42 PM
testing plug wires?	weagle	Windsor Power	2	05-12-2001 07:49 PM
Plug choices?	slo95	Windsor Power	2	03-08-2001 08:52 PM