Ironhead Keihin carb…mixture screw

[GaryanOdinson]

Originally Posted by Darren Rahilly

I ended up putting the keihin back on the bike. Works as well as it could, starts right up, runs etc. so I’m fine there. I ran into an older guy who rides iron heads who told me “that bike should pop into neutral with NO PROBLEMS!” Well, I went looking for it, trying to adjust it better and getting it so that it would slide into neutral at a stop. Now I can’t get it back to where it was(it was working pretty good). Without taking off the primary cover, I just can’t tell when the ball bearings are seated in the inner and outer detentes. Is there a trick for this? As I have it, the throw is too long and the bearings pop out of their seats and I hear a “pop” then no clutch…

Yes The Kehin is a Fine carb,Mine been running 13 years now...I've Got a good understanding of it..I Had Clutch creep the first Month i Got The bike Sounds like i did the same as you..played around..NO Go..replaced with OEM clutch pack..still in today no problems 13 years later..good bikeing to you We all hope Its simple Fix...

[rejeanprimeau]

A wise mechanic guy use to say, if you have 1 3/4" valve, why choose a carb with a bigger mouth. A 1.8" intake valve is 45mm so if you go bigger than that you just loose ''sucking power''; his term.

[JB in NC]

Originally Posted by rejeanprimeau

A wise mechanic guy use to say, if you have 1 3/4" valve, why choose a carb with a bigger mouth. A 1.8" intake valve is 45mm so if you go bigger than that you just loose ''sucking power''; his term.

You have two 1 3/4 valves (or whatever size you choose as an example). To carry the example to a more extreme point, V-8s don't use 1 barrel carbs.
The size of the carb is more closely related to the horsepower the motor will deliver, rather than the size of the intake valve.

With all that said, charge velocity is IMPORTANT.

Jim

[Ferrous Head]

How much air will a 45 mm intake port flow in CFM ?

How much air will a carb with a 45mm venturi in a carb flow ?

[rejeanprimeau]

Originally Posted by JB in NC

You have two 1 3/4 valves (or whatever size you choose as an example). To carry the example to a more extreme point, V-8s don't use 1 barrel carbs.
The size of the carb is more closely related to the horsepower the motor will deliver, rather than the size of the intake valve.

With all that said, charge velocity is IMPORTANT.

Jim

Sorry, the guy was talking Harley Davidson.

[BigMek]

I use piniongear's clutch adjustment method and it's never steered me wrong. Still a PITA to find neutral if I'm not rolling though /shrug. http://xlforum.net/forums/showpost.p...7&postcount=73