puzzled by my jetting

[jkylnhyde]

Just Yesterday I was running a 280 main 25 pilot and needle position was #4 on the toomey needle.. I did a plug chop, swap the plugs, drove home and cut them open... They were perfect! Text book Perfect 2mm brown ringed beuaties.. Airbox lid was off running a Single K&N filter.

 

Today i just got done installing my Noss Head w/20cc Domes, installed the K&N pods.. I jetted to 330 main 27.5 pilot and left the needle on position #4. Since Compression was 161 (both Cylinders) i put in 100 octane w/ 32:1 Klotz Techniplate.

 

After my plug chop a few hours ago.. Followed the chop procedure to a T. When i pulled my plugs i noticed the ground strap (the part you bend when gapping) was a white and a little ashy. After cutting the plug open a saw a .5mm very light almost unnoticable ring.

 

So i know i am lean, but being perfect with a 280 jet one day and then adding pods and a coolhead the next day. Then jetting up to a 330 main after these 2 mods sounds like a huge step... now i'm guessing to go to a 350-360 main, plug chop and see what they look like..

 

Im am not new to jetting, but i am new to banshees and the carb setup, and exactly where i should start..

 

Any suggestions? Mods below..

 

2020 Altitude

65 degrees

Toomey T5's

Vforce 3 reeds

Wiseco Pro lite bored .020 1 1/2 hours on top end

Noss Coolhead 20cc Domes 161 comp

100 octane fuel klotz techniplate 32:1

Dual K&N pods on stock carbs

Toomey Needles on the 4th position

+4 Timing

 

thanks in advance

[fastrthnu]

sounds good try 350. does sound kinda high but plugs dont lie. "If you did it right of course" :thumbsup: 330 might be about right when it warms up though.

[mpbanshee]

I would chack for air leaks. That souds pertty big on the mains...