[PAUL K]

Originally Posted by Dragncar

No I did not. How negative a thing is a couple threads showing ?
I was thinking about running the Champion Race plugs the last race just because they look to be a tad hotter than the others.
Maybe I will try the NGK plugs.
They are the most expensive by far, 5$ each. Autolights are the best deal, 3.25 $ each, Champions in the middle.

The exposed threads can act as a glow plug. It usually doesn't cause a problem but I'd be cautious with a pump gas deal.

NGK used to be cheap. Then one day someone at NGK realized they could increase profits by raising the price. For some unknown reason they gave their wharehouse distributors a month notice they were going to triple prices. This caused a massive shortage that took more than a year to fix.... I'd stick with the Autolites.