Jspec350z

iTrader: (3)

I am looking for some spark plugs 1 or 2 heat range cooler. The manual states PLFR6A-11 that is 1 heat range cooler. I know someone on the board is selling Denso Iridiums 2 heat range cooler for like $17 a pc. I found some LFR6A-11 at a local store for $3.77 a piece do you think these will work? Any other suggestions?

jesseenglish

The only difference between the PLFR and the LFR is that the PLFR's are platinum and the LFR's are copper so they will give you a better spark. I'm using the LFR's on my supercharged Z.

teh215

iTrader: (8)

Yeah, but are you going to spend the time to index them????

Jspec350z

iTrader: (3)

Index them? What do you mean?

kgb

Which store are you finding the LFR6A-11 for $3.77 each? I have been looking for copper plugs for my Z but didn't know they existed yet.

Thanks

Buub

iTrader: (1)

I assume you run cooler so it reduces the chance for pinging/detonation? I'd be interested in hearing more about people who've tried that on a NA Z.

Z1 Performance

iTrader: (564)

you DO NOT want colder plugs on an NA car unless you are running much higher than stock compression......

Jspec350z

iTrader: (3)

Basically you want colder plugs if you are turboed, supercharged, or running nitrous. It helps to prevent detonation.

jesseenglish

LFR6A-11 plugs can be found at most Yamaha boat dealer shops. It's used in the 150HP 4 stroke outboard motor.