What spark plugs do we all use

[Mr GTiR]

NGK grade 8's

 

[R called Jay]

I've just fitted a set of Ford motorcraft 071's.

They are std Ford FRST plugs and alot of big BHP cossie's are using them.

I got a set of them from my local ford dealer for under £12 all in

Working fine so far after a thousand or so miles and 1 trackday.

Ben

 

[sR20DET]

NGK PFR7'S never used anything else, never had a single problem with them

 

[Mr GTiR]

I've just fitted a set of Ford motorcraft 071's.

Are they iridium or platinum plugs?

 

[Trip]

I had very bad experience with the Denso IK22 on N/A engine, I then ordered HKS (one step colder) and found out they are re-branded DENSO :doh: . Will never get these again.

For F/I, the best i found are cheap copper plugs NGK V-Power Racing 7173.

 

[paulgtir]

NGK 8s

 

[Rishi]

HKS S45i

Will maybe need to switch to Denso IK31's shortly


Rishi

 

[KF79GTIR]

Denso Iridium IK24 THEY WERE FINE UNTIL I MELTED A PISTON OR TWO

 

[vizi0n]

NGK PFR7B for me @ 1 bar

 

[seasider R]

So...which are the best to use then...or does it depend on boost
or whatever???

 

[campbellju]

I had very bad experience with the Denso IK22 on N/A engine, I then ordered HKS (one step colder) and found out they are re-branded DENSO :doh: . Will never get these again.

For F/I, the best i found are cheap copper plugs NGK V-Power Racing 7173.

Evan, do you know if they go up to Grade 9 Heat range?

Jim

 

[Fusion Ed]

I use NGK Racing, C (Angle ground strap type) in heat range 9. They are the best I have used so far.

Ed