Plug Chop. Did I do it right? By Saber (Read 1,087 times)

[Saber]

So I am downgrading my exhaust to something a little more quite. Mostly for my wife who complains when I fire the scooter up at 4am for my daily commute. Anyway.
I have a Uni Filter a 130 jet and used to have a wide open 2" Muffler. I went to a Tune Pipe I got off Ebay and I installed the silencer that it came with so it has about a 3/4" opening at the end of the pipe now.
My Test
I cleaned the plug Installed a 127 jet warmed the bike up and did a couple of test runs on my street in front of my house to make sure I would have time enough to kill the motor and stop in time. I then set the bike up at the end of my street and WOT until a count of 12 One Thousands and hit the kill switch and locked down the brakes. I maintained about 6800 rpms through the whole ride and got up to about 40 mph.
My Results
The plug came out dry but black like charcoal around the ring and on the ground. The insulator was still clean. Still Rich (RIGHT?)
So I installed my 125 jet but before I re run the test.
DID I DO IT RIGHT??

Thanks

[Saber]

Anyone?

[JR]

Sorry Saber didn't see this one and Welcome to the Forum! Sounds like you're getting close and yes you did.

How was the next reading?

JR

[Saber]

Thanks for the reply. I put the 125 jet in and did a test ride but haven't had the time to do another plug chop. Work Plus Kids equals no free time. I plan on doing the test again tomorrow. If it still comes out dry black I don't own a 122 jet but I have a 120 so I guess I will skip a size and go with that. If I don't have a coffee brown color after that check then I will have to order another jet kit.

[blitztek]

I run 110 with stock exhaust and pull wheelies. I would start at 115 or maybe max 120