Hot Idle Compensator On Aisan Carburetor

[Tham]

I'm currently using a 3K Aisan carburetor

on my 4K engine.

 

This carb doesn't hold idle very well, and

I think it's partly due to the return spring,

which is built into the throttle linkage,

unlike the 4K carb which uses an external

spring hooked to a bracket on the manifold.

 

I'm thinking of switching back to my previous

4K carb, which has a hot idle compensator,

which is basically a bimetallic strip.

This compensator introduces air into the

intake manifold at higher temperatures and

leans the mixture, and thus gives a smoother

idle too. The currrent 3K carb does not have

this compensator.

 

However, I undertstand that a lean mixture

makes the engine run even hotter, so I wonder

if that might be a problem.