I am in the process of returning my M38 to 24V as it is 1) original, and 2) more cost effective than doing a complete conversion to 12V. I put out a feeler the 'web for someone who may have a 24V distributor for an M38. This process has taught me something that owners may want to consider. The distributor looked authentic, but I noticed that it didn't have "points", but an electronic module. Hmmm, that's strange.....who would sell or get rid of a converted distributor?
When I went to install it, I discovered the shaft wouldn't "reach" the oil pump. Now that's
VERY strange, but I soon discovered the reason for both mysteries. I bought two distributors; the nice looking one, and another for parts (just in case). I discovered that the "new" distributor was for an M151 ()thanks to Ron Fitz) and that was the reason the shaft was shorter, and it explained the electronics that puzzled me at first. The distributors LOOK
identical from the outside--use the same coil...but since the Ford and Willys engines are different, the shafts are different.
SO my mechanic that is helping me with this (once worked at a Jeep dealer and even worked on a few of these old war horses, and he thinks he can remove the "guts" from the 'old' distributor and use them in the 'new' unit. The shaft will interchange and will 'reach' the pump. If so, I will have a start on a more modern electronic ignition.
I thought that readers would like to know this, and be warned that the used distributor you have just bought may
be for a Mutt, and not a Willys L-head. These facts are gleaned as we go in this hobby and I am sure all us "greenhorns" can use these tidbits as we restore our Jeeps.