I have a rex 88 non turbo. I'm looking to change my spark plugs. what are the good brands that i can use? any idea? Thx guys~~

 

NGK BUR7EQ x2 (Leading - Lower holes)
NGK BUR9EQ x2 (Trailing - Top holes)

I picked some up at Napa $6.50 a piece.

http://www.mazdatrix.com/IGN-2.HTM
http://rx7.com/store/rx7/fcignition.html

It takes a standard spark plug socket, I forget the size. Do one spark plug at a time so you don't mix up the wires. The #1 rotor is towards the front of the car, the #2 is in the back. Trailing = Top, Leading = Lower. Put a dab of anti-seize on the spark plug threads when you install the new ones.

No it can't use standard piston engine plugs.
No there aren't extra special plugs that will give you more horsepower.
No the racing plugs shouldn't be used in a street car.

Also give this a read through if you haven't already.

http://www.aaroncake.net/RX-7/newowner.htm

(Surprised this isn't in the FAQ)

 

socket size is 13/16
change your plugs often as our engines and the way we drive them eat them up kregen sells them for 5.00 pc

 

Thanks you guys, that's a great help~~

 

Thanks , that's very helpful~~ cheers


I picked some up at Napa $6.50 a piece.

http://www.mazdatrix.com/IGN-2.HTM
http://rx7.com/store/rx7/fcignition.html

It takes a standard spark plug socket, I forget the size. Do one spark plug at a time so you don't mix up the wires. The #1 rotor is towards the front of the car, the #2 is in the back. Trailing = Top, Leading = Lower. Put a dab of anti-seize on the spark plug threads when you install the new ones.

No it can't use standard piston engine plugs.
No there aren't extra special plugs that will give you more horsepower.
No the racing plugs shouldn't be used in a street car.

Also give this a read through if you haven't already.

http://www.aaroncake.net/RX-7/newowner.htm

(Surprised this isn't in the FAQ)[/QUOTE]

 

what would the effect be if you just got the same number spark plug for leading and trailing? is it gonna kill the engine or something?

 

depends on which ones you got

if you put BUR9EQ's all the way around, the car will start harder, and probably make a little less power

if you put BUR7EQ's all the way around, the plugs could over heat and pre-ignite the intake charge


Just buy the right ones

 

well i already bought and installed a set of 4 already that were all the same number and didnt know what the difference was. after i installed em there is some idle surge every now and again and didnt know if that was causing it. looks like im gettin some new ones though

 

Many people recommend running 9's all the way around on motors that have a large streetport. The leadings might fould a little faster, but it will help eleminate preignition. I don't know about them lowering power, though.

 

Very timely info for me...thanks! Mazda service told me to get NGK and that I need 4. I was looking to see where I could find some in stock that I could pick up tomorrow. A friend is going to change them for me ( I wouldn't even know where to look for them!).

I just located NGK spark plugs in stock at Lordco, but they want $12 (that's Canadian) each for them! AND they are trying to tell me I need 4 leading and 4 trailing. Idiots! Even the guy at Mazda told me they should only be about $8 each.

If anyone in the Vancouver BC area happens to read this and knows where I can get stock at a decent price, please let me know!

Cheers