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Yep curve 2 lines up to exactly what I was saying 10 degrees up top Skat props are 75 or 83mm hub.

X2’s have a lot of wet surface Sxi 22 and 21 curve is close to what I was saying timing should be at 7600-7800 rpm ok. That’s a big pump. What nozzle? stinger size and what about waterbox?

Timing curve without any advance

Holy smokes 7700-7800 is easy with correct setup I’m going to assume you have serious porting like 196-200 exhaust and 128-130 transfers. #1 I have no idea the drag of that hull #2 look at the attached oem timing curve. Your not going to spin 7800 with the oem curve easily and you wont with +6...

Long gone

Lol. I was too. Ended up picking up all case and engine mounting plate bolts off eBay 13.99 shipped. Looks like today there’s some for about 19.99 for everything

It will say 65u on it. I don’t have an extra. They sell for 30-40 on Facebook marketplace

Do you want a head for a single carb 61x? Or do you want a head for a twin carb 61x cylinder? Different heads

I had similar. Changed stator and been running fine since. I did check coil first, then cdi. Btw my stator metered fine. Didn’t work under heat

Saw this today - lol

i don’t ever recall Kawasakis needing them. The early Superjets/waveblasters they can be beneficial for speed without loosing too much hook up. Yamaha‘s 08+ Hull inlet is similar to what some stuffers did pre 08 i will say it will hurt your hook up and loading. Top speed may increase, lift...

Send a known good flywheel, one you feel suspect, and a known good stator to OCD solutions. He has a bench tester and can compare the electrical outputs. Many aftermarket flywheels are known to go bad over time and/or with over heating.

WTB: Yamaha factory pipe type 4 manifold or Riva. Just manifold please message Buy or trade

Wanted to buy a set of prowatercraft fiberglass front sponsons. Superjet used/removed or new please message

785cc. popular ski setups in mid 90’s Yamaha‘s 8mm stroker 81mm bore = 783cc. Kawasaki’s 3mm stroker 80.5 bore = 783cc

The hot ticket way back when (90-95ish) was the 650 cylinder with the 4mm or 5mm crank with the 125mm rod. The non stroker or shorter stroke cranks benefited from the 118mm? Or 123mm rad rod. Most used 4mm or 5mm with OEM rods. The 650 transfers have more volume than a 701/760 cylinder and...

That’s Not a speedwerx. That’s a factory type 4

When they are bored the timing gets lowered

For low end timing. Timing is approximately when .005” shim/feeler gage fits between piston and PV closed. Difficult so I would just measure with a caliper from deck down to edge when closed and subtract squish. It’s not that big of deal IMO. I like the PV about .015-.020 minimum from...

Take a pic of cylinder sides.