[Mc69]

Thanks for the update, I've been doing some tuning as well on my CB350, but I'm still using 32mm mikuni's (I have both 30's and 32's, but 32's are working better for me)

My motor is a 362, bigger mild cam, exhaust etc, and carbs have k&n filters on them. Here's my specs right now, it's running really well, but I'm prob going to be changing my needle today to a 6F4 to richen up my 3/4 range or I might just have to step up the main to a 195 or 200.

- 190 main jet (hex style)
- 2.5 slide cutaway
- 6f5 Needle, Richest setting (needle lifted up, with clip on the lowest setting)
- 159-P-6 needle jet primary
- air screw--1/4 turns out
- Air Jet Removed
- 20 pilot jet
- Standard float height

From what I've learned, by removing the air jet it leans out the mid range so you can use a 159 primary.

 

[Mc69]

Good stuff Teazer. I experimented with a larger pilot (30's and 35's) but it was super rich. I think yer right, the 6F4 is a good needle for this motor due to its consistency in the taper.

So I'm not sure if anyone else has run into this but my 32mm mikuni's are not threaded for an air jet. My 30mm's are but the 32's (even though they have the same port) don't have threads to accept an air jet. Anyways, I have jetted it to work around the issue. The bike will be going to the dyno/tuner so I'll post those numbers when I get them.

 

[Mc69]

Experimented with the 6f4, but it was too rich down low. Even though its a nice taper, it might not be right for my setup. I'm gonna try a set of 6DH4's that I have. They look to be a little leaner in the middle and richer towards the top.

 

[Mc69]

Repacked my mufflers and stuck the 6f5 back in. Run's perfectly and pulls at every throttle point. The packing was almost completely gone, so the exhaust must have been a little too open. Now she's fat and happy.