Hey all, what is the difference between resistor plugs and non-resistor plugs? Which are better?

 

Ill just save you the trouble and tell you that you dont want non-resistor plugs. Those are not for cars with radios, computers, etc. They are for 1920 Fords and Chevys, etc.

 

My friends and I prefer to use non-resistor plugs. They allow more spark energy and are way more reliable than plugs with internal resistors. The heat and vibration from an engine commonly causes internal cracks in the resistor portion of the plug. The cracks increase resistance (sometimes more than double) and reduce the current flow to feed the spark. Cracked resistors are the most common cause of plugs to "die" and will cause misfires. If you use an ohm-meter to check your plugs you will see this.

Obviously I prefer non-resistor plugs, but they are hard to find at your parts store, and yes they do cause radio noise.
Denso brand is not the highest quality and only cost about $1 each, but that is what I was running in my 305 (stock heads) back in 1996 to get into the high 11's. The old part# was
T20P-U

any quality non-resistors will have to be special ordered.

good luck,
ODB

 

Hey ODB,

What sort of radio noise do they cause? I never use my radio (just cd player) but if the plugs would interfere with the amp or deck signal than they'd be out of the question. Thanks.

"The ODB couldn't possibly have committed all those crimes; Coolio did some of that ****..."

------------------
Base: 89 Iroc-Z LB9 auto 2.73 posi
Exh: 3" Dynomax muffler, 3" Pipe in place of cat
Ign: GMPP 8MM wires, Accel cap&rotor, AC Plugs
Fuel: Cleaned and flow-matched injectors, afpr, !air pump&diverter valve
Sound: Clarion deck, Kicker speakers and amps
Suspension/Drivetrain: KYB Shocks, TPIS Struts, BMR Strut Tower Brace
Misc: TB Bypass, All synthetics, Flexlite Transmission cooler
On the way: homemade 51.5mm tb and ported intake parts,
3-4 upshift valve, acc. spring, etc.

"You say turn that volume down? Well all I gotta say to you is NO, no no no no...
I want to Rock - ROCK - I want to Rock - ROCK - I want to Rock with you..."

[This message has been edited by I ROCK (edited February 17, 2001).]

 

they transmit radio noise,
heard as pops at low rpm, and a buzz at high rpm.
Relocate your battery to the rear of the car, then hook all your stereo power & grounds to the rear and you won't get the noise.

 

Oh cool - I was going to relocate anyway: I've already got a big fat 4 guage wire to use anyway and may even run a Master kill switch to behind my license plate. Thanks man - I can believe something like that since it's based on basic automotive physics and not something like multiple electrodes...=-O

 

You will need 1/0 gauge cable to your starter. Be sure to use high quality welding cable with many tiny copper strands inside.

 

U ROCK,

At least we all now know where your master kill switch is located...

------------------
Later,
Vader
------------------
"No matter how hard you try you can't stop us now..."
Adobe Acrobat Reader 4.0

 

I ran non-resistor plugs in my 85 once cuz they were the only plugs pep boys had that fit my '69 heads in the heat range i wanted. No radio noise, or interference with the computer to speak of.
...ed