Posted by Clint Dixon [216.248.73.1] on Tuesday, February 25, 2014 at 12:58:09 :
In Reply to: Carb Gasket Observations and Questions for Clint posted by Dave Horvath [76.125.248.166] on Monday, February 24, 2014 at 20:47:40 :
I have disassembled a lot of trucks that had the integral governor carbureter. In all cases, the gasket you show with the four slots was located under the integral governor and another one just like it was located above the manifold with a thin steel restrictor plate (for lack of a better term) between the two gaskets. I have not found this "restrictor plate" in the parts manuals, but it definitely is not the same as the thick spacer that you have pictured. But now that I reread your post, it seems that you have may have found the plate in the 47-56 parts list. What part code is it located under?
I have never seen one of those thick spacers used on a civilian 1-ton WDX-WM300 model Power-Wagon, but I have never owned a complete truck newer than 1952, so later trucks may have changed. It is my understanding that all 1-ton Power-Wagons of those model desiginations were equipped with either the integral velocity governor, or a sandwich style governor throughout the years that the 230 engine was used. But like I say, this is just my understanding. Things may have started changing in the late 1950's.
In any case, I believe the spacer you show to be 2-wheel drive and/or military in origin.
I believe you could get buy with using the gasket that has the four holes above the restrictor plate as long as the slotted one is used below. I have wanted to try this to see if there is any noticeable change in governor or accelerator pump performance. I have not had the chance to try it yet and the gaskets with the holes seem to be harder to find so I do not really want to risk ruining on of the few I have just as an experiment.
I believe all integral governors were calibrated the same at the factory and any further calibration to overcome extreme altitudes and/or engine wear was left up to the dealer.
Junior
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