750/4 w/airbox, 4 into 1 w/o baffle jetting

I'm working on my 650/750 conversion.
It will have a 750 engine with stock airbox and a 4 into 1 with no baffle.

The jets I currently have in my Keihin CV34 carbs are 62 and 140.
Since I'm using the stock airbox, will the 62 primary jet be ok or will I need to go up to 70?

Which leads me to my next question. Where can I get 70 primary jets for Kehin CV34 carbs?

Thanks,

Mario

good question, I plan on doing something similar but i here the jets for the keihin's are hard to find.

Z1 Enterprises have the larger jets. Type Keihin in their search box.
Dont know if they have the smaller. You could ask them.

I have tried several hours search time to get the 70 jet but they seem very hard to find. Please tell if You find them. On the other hand the 62 and 140 have been tried and recommended by others and should work. I will test it during spring, pods and 4in1.

You can use either #68 or #70 main jets... these jets are a tad hard to find. They really make the bike start easier and run better through mid-range than the #62 when pods/4 into 1 are added BUT the bike will run start/run decently with the #62 if you can't find these jets. The #140s are needed to be able to pull hard over 6K rpm and will work fine for the secondary main jets.