Used a plastic medical syringe with a 3/4 shot glass size body. Plastic line to a spray bar with fittings aimed down the v-stacks of the 14. Had the syringe glued to the side of the frame so I could take one hand and push the handle down into the syringe and feed water, then a mix of rubbing alcohol and water. Results? Don't bother.
Anywhere from letting it drip in with a steady hand, or a rush squirt, down to a high speed hard feed; which it more fell on its face being exactly what you said, chrly. Took up space. For what it's worth... Honda came out with the horizontal engine back in '75 was it? Some high milers came in with blown head gaskets. Being water cooled and slowly dripping into the cylinder chamber, [once the steel ring is burned away], then the paper burns until it really gushed out thru the water jacket hole, she'd steam clean the whole chamber/valves/piston as if new out of the box.
Elbow bump-bump, want those miles of carbon removed so 'more' gas/air replaces that buildup, nudge-nudge, wink-wink?
Tormenting the motorcycling community one post at a time