[dirtyd]

I bought an NGK BR9ES and the old plug that was in the quad was a BR9EG. which is better and why? I know BR9ES is a resistor plug and the other is G-rated (whats that mean?) and the G-rated plugs are twice the cost, are they a better plug?

the reason I ask is that when I put the motor back together I checked for spark with the old corosion, dirty plug. and got a nice blue spark. but when I put in the new BR9es the spark looked a lot weaker. both plugs were gapped at .028in.

 

['86_350r]

I believe the EG is a finer electrode and suppose to create a cleaner more concentrated spark. Either plug should be fine. I personally run the 8s over the 9s. Always have seemed to work just fine.

 

[acecarlos]

QUOTE(dirtyd @ Mar 1 2011, 06:00 PM) index.php?act=findpost&pid=62426I bought an NGK BR9ES and the old plug that was in the quad was a BR9EG. which is better and why? I know BR9ES is a resistor plug and the other is G-rated (whats that mean?) and the G-rated plugs are twice the cost, are they a better plug?

the reason I ask is that when I put the motor back together I checked for spark with the old corosion, dirty plug. and got a nice blue spark. but when I put in the new BR9es the spark looked a lot weaker. both plugs were gapped at .028in.

For NGK plugs; “G” means it has a Nickel Alloy Electrode…BR9EG is a thinner, finer electrode of better quality than the BR9ES…”S” stands for Standard Electrode “flat tip”.

Performance wise; the EG, EV, EGV and EIX plugs provide a better spark, foul less and are categorized as “racing plugs” by NGK…they also cost quite a bit more.

Carlos.

 

[dirtyd]

I believe the EG is a finer electrode and suppose to create a cleaner more concentrated spark. Either plug should be fine. I personally run the 8s over the 9s. Always have seemed to work just fine.

I guess that makes sence. I noticed the smaller electrode and the spark was always in the same spot. where as the ES plug you could see the spark jumping at different spots on the electrode.