DrX

iTrader: (6)

Is there any difference between race plugs and standard. For example, NGK race R5671A-7 vs NGK BR7EF or R5671A-8 vs B8EFS. On the NGK site all they say is that their race and standard plugs are built the same. Once you get into the 8 heat range they are all non-resistor.

Here's a pic of a racing 9 on the left vs a TR6. Anyone have a pic of a BR7EF or a B8EFS

HydroStream6

iTrader: (16)

Left is a non projected tip. A BR7EF looks identical to it. The one on the right is a projected tip. Non projected tips sometimes work better for boosted apps. They do for me.

NicD

iTrader: (7)

I have some pics of the BR7EFS, B8EFS, AR474, and AR94 plugs at home. I'll try to dig them up later tonight/tomorrow but I much prefer non-projected tips in bigger power builds.

DrX

iTrader: (6)

I managed to find some BR7EF plugs locally. Just picked them up. As stated by NicD, the tip is the same as the 9's shown above. Going to give them a shot for street use. Might need something colder for 20 psi 1/4 mile runs.

NicD

iTrader: (7)

Yeah, I would be running something colder at that power level for sure which means non-resistor non-projected. Either way make a pass or two and read the plug right afterwards and it should tell all.

blue00ZZleeper

iTrader: (5)

Whats the difference between the BP7EFS and the BR7EF? I have the BP's in now and I'm not 100% sure if their the best for what I'm trying to do. NGK's website sucks lol

NicD

iTrader: (7)

BP7EFS are projected tip plugs

blue00ZZleeper

iTrader: (5)

So I should probably run the non projected BR7EF? Because the porcelain is recessed, it retains less heat correct?

CarsandWomen

iTrader: (19)

ive looked around and found little to no info on plugs compared to what i already know, does anybody know a source of extensive info on all kinds of plugs, how to read em, what the applications are, etc?