Spark Plug Preference

[red coupe89]

in the process of pulling my intake for some electrical issues and the cooling lines. going to change my plugs while its easy, ive done some homework on different heat ranges and gaps. im running 8.5/1 on a stillen bottom end with OE head gaskets and heads. twin garrett gt28rs' on 14psi of boost but going to 25psi with nistune over the summer. im thinking NGK PFR6B-11B which are a range cooler with a .036 gap. any thoughts?

[itsa300zx]

Look on SZ site, go with the iridiums for higher boost appications.

[red coupe89]

thanks, going to check them out

[ThisIsSparTTa]

in the process of pulling my intake for some electrical issues and the cooling lines. going to change my plugs while its easy, ive done some homework on different heat ranges and gaps. im running 8.5/1 on a stillen bottom end with OE head gaskets and heads. twin garrett gt28rs' on 14psi of boost but going to 25psi with nistune over the summer. im thinking NGK PFR6B-11B which are a range cooler with a .036 gap. any thoughts?

PFR6B-11B have .044 gap. I did a lot of research on this, and I pretty much found a resounding answer of using PFR6B-11B over the NGK Iridiums because of the way they were designed to go farther down in the cylinder. Also, changing the plugs is super simple minus the back two, which aren't bad. You shouldn't need to wait until doing other work to do them.

[red coupe89]

since ive bought the car ive only put 3k on it. wasent really a wait to do, just doing things as im doing other things lol. thanks.