Spark plug question

Landman · #1 (**permalink**) 11-15-2005, 10:04 PM

What is the difference between a resistor and non-resistor spark plug?? Is one or the other recommended? Pro's, Con's to each? These would be going in a 1992 Diablo.
Thanks,
Colin

raymond · #2 (**permalink**) 11-15-2005, 11:31 PM

Forget everything about spark plugs and install what is recommended, the power gain is in no way worth the risk you are taking.

**fl_355** · #3 (**permalink**) 11-16-2005, 05:15 AM

See the sticky above for more info on standard tune up parts you can purchase locally.

If you're doing it for the first time, here's a tip that will save a lot of time.
Snap out the throttle linkage = much easier to get at and remove plugs.
Stand on side of car, grab the rail at the end near the ball joint and give it a decent pull.... will snap right out.

Landman · #4 (**permalink**) 11-16-2005, 06:58 PM

Thanks for the tip about the throttle linkage. That sounds much easier. The reason for my question wasn't to gain H.P. I want to do a tune up since I've only had the car for 2 months. The only auto parts place that could even hook me up around here gave me a price of 44.95 per plug. I called Champion directly and they recommended a Champion A59C for the Diablo. They said it was a non-resistor plug, and that was what the car needed. I was able to get them for 4.24 per plug. They look identical to what came out of the car. Have you ever heard of them?

Thanks again,
Colin

ltadmin · #5 (**permalink**) 11-16-2005, 07:22 PM

Those are the same plugs the car came with from the Factory with one small exception..the A59C is a copper plug and originally the Factory used A59G, the G denotes Gold....just use the C's and you will be perfectly fine!

Happy Motoring

raymond · #6 (**permalink**) 11-16-2005, 11:35 PM

Recently a guy sold A59GC on ebay, I bought some sets from him and drive them in the CT, work perfect...
As I said no experiments with unknown plugs, I tried Denso at removed them soon with the champions.

**fl_355** · #7 (**permalink**) 11-17-2005, 05:15 PM

Raymond - me too. Denso, then iridium - did not care for either.

**fl_355** · #8 (**permalink**) 11-17-2005, 05:22 PM

Colin - I know what you mean. I bought a 92 Diablo a year ago and went through the car and did a tune up myself. The 13 year old car had 9K miles and the original plugs!

Anyway - remember to use anti-seize compound on the thread of the plugs because the block is aluminum.

raymondo · #9 (**permalink**) 11-17-2005, 05:36 PM

Isn't the resistor plug used to reduce interference for the radio. Don't laugh if I'm wrong...Just heard that a long time ago.

raymond · #10 (**permalink**) 11-17-2005, 11:18 PM

I think the plug wires will produce much more interferences than the plugs.

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