85% dailed in but just a slight boggish in the mid

[stEvEoPeN]

my mods are as listed

 

FMF gold series sst

powercore 2 siliencers

Bossien pro series reeds

boost bottle

k&n with lid on and snorkel off

 

Jetting Spec's

220 main

27.5 pilot

stock needle third notch

air screw 2 turns

 

elevation 2100ft /temp 60-80 f

 

Recently I had 200 mains/stock pilots/ third notch clip/ 2 turns out on airscrew - I was running just the pipes with the airbox lid and snorkel on. none off the other mods were added, and the bike was running good but obvisiuosly lacking due to the airbox lid on. The plugs were looking nice at this time.

 

When I added the reeds, boost bottle, and k&n and removed the snorkel, then this is the sequence of the jetting that worked best- 220main,27.5pilot and 2 turns on the air screw with the stock needle remainin the same third notch

 

The bike seemed to run very good, but I'm a little lean.

response right at idle will bog if you pin it imeddiately, but if you just rev it up a bit first before crackin her hard its excellent

response off low idle while riding is excellent

respones on mid at low idle is a little bit boggish, but if your up in the rpms in mid its very good.

WOT response is good but I am concerned I am to lean

 

The plugs look chocolate brown on the electrode and slightly colored on the based.

 

My question is no doubt that I should richen it a bit....seems like it would be good to start in the mid to see if that helps. Every time I tryed to go richer in the mid by clip setting it never works. I do have different needles from a dyno jet stage two kit will these work with mikunni jets or are they made only for dyno jets? I was also thinking about upping the pilot one to a 30. Since I noticed the best results from changing the stock pilot to the 27.5?

 

What do you guys think? Carb since is excellent I forgot to mention. I appreciate any helpfull answers.

 

and yes I do need to try a plug chop but am wanting to do that when I am closer to being dailed in.

 

 

 

I

[fastbanshee8]

At sea level, you should be running 280, or 290 mains, so you should put some bigger mains in. The 27.5 pilots should be fine. You shouldn't be messing with the needles, until you get the mains dialed in. Put the clip in the middle, and richen up your mains, then see what it runs like. When I used to run FMF's, the pipes by themselves, needed 260 mains, and that was before putting on a better air filter.

[stEvEoPeN]

At sea level, you should be running 280, or 290 mains, so you should put some bigger mains in. The 27.5 pilots should be fine. You shouldn't be messing with the needles, until you get the mains dialed in. Put the clip in the middle, and richen up your mains, then see what it runs like. When I used to run FMF's, the pipes by themselves, needed 260 mains, and that was before putting on a better air filter.

 

Thanks for the input! I have 280 dynojet mains, but aren't they sized a bit different than the mikunni jets? I have tryed bigger when I took my lid off and wit just the pipes, no other of the listed mods. How much more should I jet up if I want to take the lid right off? I do have 300's and 310's should I try those with the lid off?

[fastbanshee8]

Thanks for the input! I have 280 dynojet mains, but aren't they sized a bit different than the mikunni jets? I have tryed bigger when I took my lid off and wit just the pipes, no other of the listed mods. How much more should I jet up if I want to take the lid right off? I do have 300's and 310's should I try those with the lid off?

 

Try the 310's. Most people run 320's, but your elevation is higher, so you might be right on, or a bit rich.