jetting help

[lumpy300]

installed a 400 carb on my 300 awhile back. it's got a 45 pilot 3rd position on needle and a 150 main jet. my problem is it bogs going from mid range to top end. rolling across the dunes you can pin it and it will bog, then sort of kick in. do i need to go bigger on main or lower, my instinct is bigger?

[rebelbuggy]

Originally posted by lumpy300
installed a 400 carb on my 300 awhile back. it's got a 45 pilot 3rd position on needle and a 150 main jet. my problem is it bogs going from mid range to top end. rolling across the dunes you can pin it and it will bog, then sort of kick in. do i need to go bigger on main or lower, my instinct is bigger?

what kinda air filter you running? you got your air lid on or off? if its on then try removing it and seeing if it helps.

[lumpy300]

motor is bored .080 over air lid is off, mild port, stock cam

[lumpy300]

also air filter is uni filter.

[rebelbuggy]

Originally posted by lumpy300
motor is bored .080 over air lid is off, mild port, stock cam

Oh, I didnt know, Mine is bored .40 over and my lid is now off with this 400ex carb, havent rode mine yet as its taken apart, hopefilly by the end of next week. I hope it does good I forgot what jets and all is in this carb.

[rebelbuggy]

Originally posted by rebelbuggy
Oh, I didn't know, Mine is bored .40 over and my lid is now off with this 400ex carb,I also run a UNI filter.
I Haven't rode mine yet as its taken apart, hopefully by the end of next week. I hope it does good I forgot what jets and all is in this carb.