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Both Cylinder Compression Readings? Engine air-leak tested? Good Spark? Crankcase Drain removed and blocked? 650 or 750 Coffman Exhaust? Coffman Sizzler, Signature or Lightning? Stock OEM Airbox or Aftermarket Flame Arrestors? Original Waterbox, A/M Waterbox or No Waterbox? Keihin Carb Fuel...

Haven't seen Duckbills come off. Had them on a 62 mph 951 SXR race ski and stayed put. But only really work when Ski is in motion. Will drain a little Water when on the Trailer and Stand. So far so good on the Square Nose. But I'm only chasing Buoys. The Versiplugs drain more Water and the Ski...

https://www.atlanticjetsports.com/products/duckbill-drain-system-universal-pwc-jet-boat?_pos=2&_sid=f2e25745f&_ss=r

The Fiberglass Layers (Top and Bottom Hull) around the Aft Eye tend to separate with time. I noticed this on mine before I Turfed, so I applied some Epoxy "Peanut Butter" around the Hole Inner Wall to seal the gaps, let it cure, sanded it smooth. Then turfed. But generally, the Square Nose...

@Clous22. Apparently you have every Part that everyone needs :D You're amazing! :confused:

If the Exhaust Hose melted, the Pistons probably melted too... Do a Compression check and report back. You need to figure out why the Engine ran so hot in the first place.

Family’s and friends only. :p

@Clous22. What Ski do you ride? So you sell Parts too?

Too bad that a Flywheel needs to be installed and the Engine completely assembled, started and revved to test the Flywheel Magnet and Coil Voltage Output to find a sketchy Flywheel. So if the AC Voltage Output is low, still don't know if the Coil or the Flywheel Magnets are bad or both. Then...

October Friday the 13th of 1307 AD is the day the Crusaders got rounded up in France...a really bad day. o_O

Glad you're still among the living ;) How much is 1/2 of an X2? 1?

Think someone suggested using Heat Shrink Insulation. 2.5 Diameter Heat Shrink is available at Grainger.

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The 2 Red Wires supply Power to the Starter Relay and to the Zeeltronic CDI. There is one extra Red Wire required because now, the DC Zeel CDI needs DC Power directly from the Battery whereas the Stock AC CDI got AC Power from the Magneto Generator Charging Coil (Brown/White Wire from Flywheel...

The Annealing Temperature varies among Metals, but the Annealing Process is similar. Most Metals harden, just like Copper does but at different stress levels, when deformed or cold-worked. "A similar process can be followed to anneal steel, brass, and aluminum, but the difference lies in their...

Won't rapid cooling harden the Copper Gasket? Thought it needed to be slowly air-cooled so that it becomes Ductile (softer) for a better seal? That's what Annealing is supposed to be: heat then slow cooling... If making a knife blade, a rapid quench/cooling would be needed to make the Steel...

:p

What type of Elastomer are the O-Rings? Are they Viton or Harbor Freight Rubber? Viton has the higher temperature rating of 390 F versus lower Nitrile and Buna-N... And what is the Squish on that Cylinder/Dome setup?

No way to Bench Test a Flywheel (OCD hasn't built one yet ;)). The machining process to lighten the Flywheel can damage the Magnets by applying Heat and Bending stresses. So can using an Impact Wrench to remove the Flywheel Bolt, beating on a Flywheel trying to pull it out or the impact shock...

Should pop clean. No bubbling or fizzing. Means the Needle Valve is leaking. Maybe it's the Valve Body O-Ring. Or maybe its the Needle Tip with a wear groove.