ax75f92 Posted January 30, 2010 Share Posted January 30, 2010 The previous owner of my car swapped in an L28 with a carb'ed N47. Its been a while and I wanted to get some fresh plugs so I pulled one out and took it to AutoZone/Pepboys and nether of them could look up the plug by the Bosh part number stamped on it. They tried to sell me some other ones their computer said were the same, but after comparing the two side by side their electrode looked extend slightly more than the one I pulled from my car. Not knowing how critical the clearances are with the L28/N47 combo I decided to play it safe and not risk any piston/plug contact. Ive searched it a bit here and on other Z forums but really havent found a great answer or part number. If anyone familiar with this setup can recommend me a plug it would be greatly appreciated. Thanks guys. Quote Link to comment Share on other sites More sharing options...
T-Bone028 Posted February 1, 2010 Share Posted February 1, 2010 Have you tried google and buying the same spark plug online? Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 2, 2010 Share Posted February 2, 2010 NGK BPR6ES-11 (projected resistor) BR6ES-11 (resistor) or B6ES-11. Projected or non projected tip are fine for a street Z. I've run projected tip plugs in a flat top motor with an N47 without any issues. Quote Link to comment Share on other sites More sharing options...
ax75f92 Posted February 3, 2010 Author Share Posted February 3, 2010 Thanks for the replies Ill check the parts store for the BPR6ES-11 and hopefully they do the trick. Thx again. Quote Link to comment Share on other sites More sharing options...
ax75f92 Posted February 4, 2010 Author Share Posted February 4, 2010 The closes thing they had was a BKR6ES-11. Im assuming it should be OK. In researching what the "K" signifies I came across this: http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf In case anyone was wondering what all those number stand for. Also, is the 1.1 gap good, or should I adjust it? Quote Link to comment Share on other sites More sharing options...
z-ya Posted February 4, 2010 Share Posted February 4, 2010 K is peanut plug size (5/8") projected tip. Should be fine. I have many 10 packs of 10 BCP7ES if anyone is looking for a "7" heat range, projected tip, non resistor. Quote Link to comment Share on other sites More sharing options...
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