First test ride after the cam chain fiasco, and now what...it needs half choke to run...!
Surly a 1mm over bore and a porting job is not enough to require a needle move or jet change of this magnitude..
OK here is a snap with the "T" lined up perfectly...not fun as it loves to roll off its mark...as a perfectionist I see that the lines on the cam gear are slightly skewed. But one more tooth looks extream...??
I turned my cam every which way today with a slotted cam chain gear. It seemingly made no difference. Point is that your issue may not be the cam. Choking the air flow with better results points to a fuel starvation, on your idle/pilot jet.
Sometimes if our bikes sit pilot jet looks clean,but has coating around inside jet orifice.
Get some fine strand electrical wire, strip out a couple of strands and twist them together and use that to clean your jets, don't force it in there in case a bit breaks off, make it so they travel easily through with some carby cleaner..
Yep, a clogged pilot circuit/jet Is a likely problem. How long did the carb sit during the rebuild? It could also be an air leak at the manifooled.
Yep! Grab a spray bottle with some water in in and spray at the intake manifold wile it's running, it make a difference when you spray you know where to look.
Any chance the gas tank vent is plugged?
ok im getting convinced that my modifications have increased the fuel needs.
so my question is this...anybody out there in 230 land that have ported the head, have you seen the need to increase jets and if so by what percentage.
What bike is it again?
A bigger carb will give you an improvement.. probably for less effort too..
A larger bore (displacement) INCREASES signal at the carb so no way.
A wild cam will decrease signal at low engine speeds.
Are you getting fluid through the fuel screw passage? With the screw out, not just into the Venturi but also through the side inlet into where fuel is picked up from the float bowl.