RX7 13B 4 UR AZZ

I have replaced the spark plugs with the same ngk's that it had, it had 2 spark plugs 7eq and two 9 eq now it had on the top 2 the 7 eq and the bottom 2 9 eq is this the proper way they go ? which are the leading and trailing ? Im new at rotaries so throw me a bone give me a run down.

FCmaniac

Welcome to the forum.... that's correct, leadings (7's) on top, trailings (9's) below them.

FCmaniac

one more thing... some people run 9's on all four, they are a bit colder plug and will last longer. I'm not sure how that affects ignition though.

www.IssanniRacing.com

i ran 9's on all 4 never had any problems