Re: Best Spark Plugs for standard Pinto
2014/02/04 16:21:52
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Note to above postings, NGK BP6ES, BP5ES are NOT pinto plugs, this range suits 14mm X-flow, pre X-flow, BDA & Twincam plug holes. The Pinto takes a physically different plug with shallower but larger 18mm diameter hole. NGK plugs are generally considered one of the best brands, just go to their website or a catalog and look up your application. Not really necessary to go for R resistor type and steer away from P projected tip type because if your head has been refaced a few times, depending on the electrode orientation when you screw it in relative to the piston, the piston may touch and close up your gap.
If you do a warmish pinto perhaps go one grade cooler, in NGK speak one digit higher than standard recommended.
SFE