416 Jetting help please!!!

[beaker1214]

I'm currently getting my motor bored out to a 416 for now. I was wondering what main jet I should start with? Im sure that this has been a thread before but I couldnt find it so any help would be great!

[hondamanex400]

if your below 3000 feet, and running w/ the airbox lid w/ no mods to it (the lid), then i would go w/ a 145 or 150. i am running a 155 because i have 6 airbox lid vents w/ a pipe and a 416 kit. but if your running w/ no airbox lid, then you need to run a 175 main jet. hope this helps

[400exstud]

Depending on your mods, somewhere in the mid 160's.

[GPracer2500]

Make sure we're all specifying whether we're talking Dynojet mains or Keihin mains. I'm pretty sure the 145 or 150 suggestion would be Dynojet mains and the mid 160s suggestion is Keihin mains.