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TR3A running with Pertronix ignition and unleaded gas (91 octane) in Arizona heat. What is the best choice for spark plugs? Presently, it has Champion L87YC and it is time to replace them (and the spark plug wires). Keep using Champions? NGK BP(R)6HS? Of the hotter NGK BP(R) 5HS, reccomended in one of the threads because of the unleaded gas. Or a Bosch plug? Someone ecommended Bosch Platinum Plus 4032. Thanks.
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TR2/3/3A TR3A Spark Plugs
- Thread starter smdichter
- Start date
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My TR4A with Pertronix and 93 Octane runs as nice as can be with Bosch WR7BP Platinum plugs. I wouldn't hesitate to recommend.
www.amazon.com/Bosch-WR7BP-Platinum-Plus-Spark/dp/B000PL0DSS
www.amazon.com/Bosch-WR7BP-Platinum-Plus-Spark/dp/B000PL0DSS
Geo Hahn
Yoda
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That is what I use -- seems fine. I prefer copper core wires as the pointy bits in the distributor cap seem to connect better with those than fiber core type. I got a 'universal' 8-cylinder kit from CARQUEST that is essentially a lifetime supply for the small amount a TR engine needs.
Marvin Gruber
Yoda
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I haven't swapped around much on plugs but the old champion L87s have always been what I use. I've bought several cars over the years that have had Bosch installed, usually I replaced them.
Marv
Marv