Anonymous-0

Well-known Member
Entered a fun pull at local heritage show Saturday, was going pretty good till about 80 to 100 feet then carb ice took over and power gone. This is the second time with my Jetstar Two gas. Any thoughts on how to avoid or rectify. jack
 
You don't have that carburetor on a Lp manifold, do you?
The truth is, I don't know if a Lp manifold was offered for the OHV 206, but there was a separate Lp manifold for all the older Lp MM tractors.

The reason I am asking is most gasoline manifolds are designed to transfer exhaust heat to the intake manifold to combat icing. The regular Jetstar manifold acutually bolts the two together just above the carburetor.

Most Lp manifolds do not have any connection between the intake and exhaust manifolds, to keep the Lp gas as cool as possible before it enters the cylinder.
 
no it doesn't have a LP manifold.
yes it was fairly humid but not really oppressive.
has the standard Jetstar carb no mods, ran it on the dyno next day no sensitivity to power jet adjustments.
tractor planted 200 acres of beans this year no problem.
considering Zenith carb from Yesterdays Tractors. good idea? Listed for U302.
35 years aviation familiar with carb heat, don't think a good idea for dusty work. jack
 
My MH44 with carb was real bad about icing on humid days. Getting the manifold up to temp quickly is the solution. Once the manifold is hot it should be OK.

I have found a thermostat helps, maybe pre-warming the manifold with a heat gun if you are doing short runs.
 
Stay away from the Zenith carbs. You will not be happy with the loss of power and the work it will take to make it fit. (been there, done that)
 

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