Searched but not the answer I wanted --Spark PLug Q
 

It's about to be at that 20k marker and time for spark plugs. Take a look at my mods and suggest the plugs you would use....also if i took it to the dealership would is the norm charge? and how hard is it the due it your self? Thanks

I have heard that it is good to change them every 10k or so depending on how hard you drive the car. I would still stick with the stock plugs 7's in front 9's trailing.

FYI-I would avoid the Mazda dealerships if I were you. I have personally had bad experiences with them.

Yeah, the Mazda dealers techs don't know shit about RX-7's.

thats what ive heard --- i guy before said that the dealership couldnt even find them... what do you mean 7 in front --and 9's trailing...two different sizes?

Each Rotor has a leading plug and a trailing plug. For stock setups, they are different in heat range.

For your setup stick with the stock NGK plugs.

BUR7EQP - Leading - lower plug of each rotor.
BUR9EQP - Trailing - Top plug of each rotor.

Its pretty eacy to do yourself. Just do one at a time so you dont mix anything up (disconnect only one spark plug wire, and remove only one spark plug at a time).

The lettering is on each plug, so just put the matching new plug back in the matching hole.

http://www.racingbeat.com sells them the cheapest I've been able to find at $8.25 each.

Good Luck.

thanks a bunch for the information.....wish me luck

Is there anyway somebody can supply me with a pic of spark plugs.. so i can see which one is the lower and top... thanks

Hmmm... I bought my NGKs at a dealership here in Atlanta for 7.75 each. Naturally each dealership has their own prices.

-Kib

BTW, didn't see an ecu, upgraded fuel system, or intercooler in your mods. You are going to blow that new engine running a full open exhaust like that.

I rally dont get on it that much, but i will by the APexi PFC soon

autozone will have these right?