Update- I robbed the coil from the OB34A 4 hp Neptune, and put it
on the OB64A 6 hp Neptune, and now appear to have great spark!
It’s ready to try out, but that 10″ of wet sloppy snow from yesterday
is raining off the garage roof, right over the test barrel. Suppose to
be 20 degrees warmer Tuesday anyway.
I’m “re-thinking” about trying the pony coil, but now for the 4 hp Neptune.
To get the plug wires to exit the coil and through the mag plate, I’d
have to pull out the grommets and notch out the mag plate in the area
shown in the photo. (hopefully neater than my free hand drawing!)
Perhaps it wouldn’t be too much of a butcher job, and if it
actually worked, I’d be happy. I’d still have to further whittle down the
lamination, as the Pony coil hole is 7/16″ square.
Only hesitation is that the B&S coil swap attempt was a total failure,
and I have no idea why, less it’s the difference in design of the laminations.
Not really sure what a JD Pony coil laminate look like either.
Prepare to be boarded!