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I’m trying to remove the cylinders from said power head.
The starboard side if froze up the worst. It soaked in my
ATF / Acetone bucket for 1-1/2 weeks.
Today I made two 18 mm grease gun attachments and
was able to move each cylinder close to 1/4″ before
grease escaped out the exhaust ports.
I messed around with some wood shims trying to move
the cylinders further, but due to obstacles such as rods
and cylinder studs, it didn’t work out.
I threw the power head back in the bucket of “hope” for now.
Any ideas for “next time”?I remember someone using “Jack bolts” ? to force the
cylinders off, but not sure how they did it, nor am I
sure I have any good opposing spots to use them.FYI, I removed the guts from two 18 mm spark plugs
and brazed in air tool fittings that fit my air hose chuck.
I then tapped the ends for 1/4″ grease zerks.
This way I can apply air or grease to the cylinders.
Air is a quick and easy way to make sure the pistons
are covering the ports, before starting to pump in
a tube of grease!I hope to use this power head for the fire pump it was mounted to,
as the pump and motor have matching numbers.
If I don’t, I have a 1937 Lightfour power head that spins over,
and has the same carb mounting flange as the 1935 “stuck”
power head. It appears by 1939 the Lightfours went from
9.2 hp to 9.7 hp, and had a diagonal carb stud arrangement
with different porting into the crankcase. Was this change
the extra 1/2 horse power?
Prepare to be boarded!
YES – along with changes in the carburetor, crankshaft and center bearing. It’s too bad no-one makes the high compression two ring Midget Racing pistons anymore. That would give you another couple horses.
The midget race cars used the Racing 460 – 8 times the size of the Midget Racer which was half the size of the Lightfour. I souped up a V4 Evinrude for Joe Caradona (Owned the company that made Jiffy Kits to rebuild carburators) to put in a midget race car he designed. He convinced the racers it was the same as the 460. Common thought was the outboards couldn’t idle and would foul plugs with a slow start. So they started the race slowly . . . When the flag was dropped to start the race and everyone hit the throttle – The V4 did a wheelie and ran over the Ofenhowser in front of it. It’s major failing was you could’t turn if the front wheels were not on the ground.
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