Mazda3 Forums banner
1 - 3 of 3 Posts

·
Registered
Joined
·
122 Posts
Discussion Starter · #1 ·
most of the plans for my turbo setup have been complete, so on to the small stuff..

which would be a spark plug that is cooper in which is one step colder

I found this NGK Racing Spark plug, part #R5674-7 (14mm x .460"
(5/8") Taper Seat)

the last number indicates heat range...

this will be going into the 2.3L motor...

so what do you think, will this be okay, for a dd driver on 10 psi of boost?
 

·
Registered
Joined
·
1,319 Posts
whats wrong with the iridiums that come in the car?
Are you a pzev?
The iridiums work up to 8lbs so far, why you wanna go 10?
 

·
Registered
Joined
·
3,326 Posts
iridiums suck for turbo cars, because they can get really brittle and end up breaking, so its easy just to stick with the old cheap coppers. and plus these are one step colder plugs which are what you wanna run when you boost, the autolite 103's suck dick ive had the porcelin break on like 3 different plugs. i like ngks alot, um i cant remember the part number, but i think these are the ones that i run now and have no issues
 
1 - 3 of 3 Posts
Top