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ghlkal · 01-16-2017

I sent a message to Marc Haibeck since I plan on changing mine this winter. I'm sure he wouldn't mind if I share his response ...

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The 41-602's are very good. I gap them at .035". They are inexpensive and last about 15,000 miles.

The best plug is the 41-801. It's a double platinum with a smaller pointy electrode. The smaller electrode has a better electric field for a .045" gap that might contribute to a better idle. They are expensive at about $70 a set but they will last about 50,000 miles.

01-16-2017	#5
ghlkal Join Date: Jan 2012 Location: Wisconsin Posts: 885	Re: sparkplugs I sent a message to Marc Haibeck since I plan on changing mine this winter. I'm sure he wouldn't mind if I share his response ... - - - - - The 41-602's are very good. I gap them at .035". They are inexpensive and last about 15,000 miles. The best plug is the 41-801. It's a double platinum with a smaller pointy electrode. The smaller electrode has a better electric field for a .045" gap that might contribute to a better idle. They are expensive at about $70 a set but they will last about 50,000 miles. __________________ 1990 ZR-1 #2180 Red/Black Many of the usual mods for 460HP, tuned by Marc Haibeck ZR-1 Net Registry Member #1548