Thread: Ngk r5671a-8

Hi guys!

Any use this spark plugs? Recomended gap? This is a V-power Racing R5671-8 plugs. At the moment i'm use BKR8IX-11.

I use them all the time.

Great plugs.

I ran mine at .0030 with my MSD digital 6

Any advantages for non-resistor plugs? I have a set but never used them.

I posted this part number along with a non-resistor heat range 9 plug a while back. These plugs are non-projected tip, which gives them a really good profile for boost. The non-resistor plugs can cause some unwanted radio or EMI interference but I never experienced any.

The 9s seem to foul too easily for street use, but the 8s are awesome and a lot of autozones carry them.

Benefits to non-resistor? Same really as a low-resistance plug wire. More spark output, but wear is generally sacrificed. But they seem to perform a bit better on the top end. Perhaps other guys can tune in and give their feedback as well.

I use 'em, my buddy with a KA-T uses 'em, I get a lot of radio noise, but I just swapped out to BKR7E's and still have some radio noise when the car is running. They do seem to foul out quick though...I'm gonna also swap out my taylor wires for OEM's to see if that helps.