Platinum NGK Spark Plugs

[ShadeTreeMech]

I'd put iridiums on par or ever so slightly better than platinums. And multiple electrodes arre a bad idea. The heat of the spark will keep a single electrode clean just fine, but if you add multiple electrodes, the heat is distributed throughout whichever electrode happens to have a lower resistance at that particular moment. which would lead to 3 fouled electrodes with one that is still being used.

I have seen platinums burn down to below the ceramic insulation before, so I'm testing a set of NGK iridiums in both my Nissan 3L to see how they fare. I'll update ya'll in about 5 years

[texanidiot25]

I've never quite understood the multi-tipped plugs, the spark will travel the path of least resistance, one tip at a time, not all of the tips at once (like in commercials).


For those looking to find NGK plugs cheaper, try RockAuto Auto Parts . Autozone has them for $8/plug on my '87 CRX HF, and I got them for $2/plug from RockAuto. Shipping with a load of other parts was only 6 bucks or so, I don't quite remember. Never the less, massive deal.

[Old Tele man]

...about the only true benefit of multiple tips is that they effectively maintain gap distance at about the same distance for longer periods of time, because as one electrode gap lengthens, the next closest gap "takes over" firing duties, and so on.