I have a bored out raptor to a 696 from Quad Central ll. Port and polished head. Full Yoshi pipe. My question is what jetting should I be using? I live in Utah and the elevation is around 4800 ft. I have 27.5 Pilots and started with 170 165 mains. It was running real rich. I went down to 160 155 mains still running rich. Airbox has holes cut, out KandN filter. Is there someting I am missing?????[img]i/expressions/face-icon-small-confused.gif[/img]

 

There sure must be a difference between the 4800' that you live in and the 875' that I have, my bike would be way lean.

When you say you are rich, is it in a 3rd. gear high RPM spark plug run?? Or does it just feal rich??

I am running 25's for pilots in mine with the air box lid removed.

 

Are you using the air box lid? How are you determining that you are rich.

 

Rohnda V
It is a hig RPM run when the plug looks to be rinning lean
When ridding around I can see black smoke comming out of the pipe. I will pull the plug and it is black.

six
The air lid has two holes cut out 1 1/2 by 3 inch. it is running rich from all the black smoke and carbon on the end of my pipe.

 

With those jets I doubt you are seeing black smoke at wide open throttle, but you didn't say.
I think you might be rich on the bottom to mid range with those pilot jets.

This is what I would do:
remove the lid if you can with your filter
170/175 mains at least
25 pilots
3rd or 4th groove on the needles
2 3/4 L 3 R mix. screws

 

six

I have not looked back when running full, going to fast. I went to Little Sahara yesterday and ran the face of sand mountain I stopped at the top let it cool off a bit and pulled to plug it was white. would a dyno jet kit help?? how much lower should I go on the pilots??

 

I'm not surprised it was white. I like the mikuni jets myself. I would start at the settings I mentioned before maybe a little bigger on the mains.

 

I will try the setting you suggested and see what happens.
Thanks for the help.

 

six

when you said 3rd or 4th groove on the needles. is that from the bottom up or from the top down??

 

Top down