[Farmall] Carbs

[Karl Olmstead]

Thanks, Chris.  If I get a chance, I'll try your suggestions this week.  Got 
the castings painted yesterday.

Notice that the venturi and jets in the T-20 carb I'm also working on are 
substantially larger than those in the F-20 carb.  Hmm.. I might try 
swapping carbs at some point in time.  Main emphasis right now is getting 
the F-20 going.  Missed a parade Saturday.

-karl
----------------
>
>  The best place to start is to look at how the part was first made.  In 
> order
> to restore the worn hole it should be set up in the machine the same way 
> it was
> when it was made.  Generally where the part mounts is a machined flat 
> surface
> and this is a reference frame.  For the carburetor it is where it mounts 
> to the
> intake.  The centerline of the air way in the carburetor  can be 
> determined and
> marked for another reference point.  The throttle shaft and plate can also 
> be
> used.  The shaft can be center drilled on a lathe then installed with a 
> good
> throttle plate. With the throttle plate closed to align the shaft with the 
> air
> way for the best fit.  A center can  be used in the mill to align it with 
> the
> center drilled in the throttle shaft.  In some cases the wear is only in 
> one
> direction and enough of the original hole remains to help align the part. 
> The
> other thing to keep in mind the original tolerances were not as close as 
> what is
> held now.  Some parts were not drilled correctly originally and this can 
> make
> the process a little more complicated.
>
>  Chris Klossner
> http://home.att.net/~klossner/