Running a hotter plug -- which one?

[Gregarious]

I'm currently running NGK BR8EG plugs in my 07 EC 300. I was thinking of experimenting with a hotter plug as all of my riding is slow single track. I thought I'd simply use a BR7EG, but no such model exists that I can find. Would a BR7ES work? I believe that is the KTM 300 EXC standard.

-Greg

[GMP]

Use the OEM heat range plug and jet it right.

[motorhead]

honda genuine parts used to have BR7EG available.

[JCW]

The BR7ES is one size hotter without the resistor, but as Glenn said, that is not the correct way to fix the problem and it could cause bigger problems. If your plug is loading up so that you have to pull in the clutch and rev the motor to clean the plug off so the motor runs clean, try going 1 clip leaner on your needle and work from there until you get it right.

Or better yet, if you are unsure and have a riding buddy who is good at jetting, let him ride it for a minute and he will be able to tell you what to do and probably do it for you.

Also, in the middle of a typical section where you are running your bike at its hardest, stop it immediately, pull over and check the spark plug. If it's dark brown and wet from unburned fuel, you're definitely too rich. If it's white and dry, you're on the lean side.

[Nick]

A BR7ES is a resistor plug, thats why the R is in there.

[widebear]

Originally Posted by Gregarious

I'm currently running NGK BR8EG plugs in my 07 EC 300. I was thinking of experimenting with a hotter plug as all of my riding is slow single track. I thought I'd simply use a BR7EG, but no such model exists that I can find. Would a BR7ES work? I believe that is the KTM 300 EXC standard.

-Greg

A better option to a hotter plug would be using a projector nose plug BPR8, same heat range but closer proximity in relation to the flame front.