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Does this still hold true for mismatched Exhaust Manifold and Cylinder Exhaust Ports? While pondering if I should grind my Factory Pipe 61X Exhaust Manifold to match the 760 64X Cylinder Exhaust Ports, I remembered that saying. Then bumped into some Facebook talk about better performance from...

Dar she is! What's wrong with her?

It's a 750...Thanks for offering.

What happened to this Project? Did the backfiring issue get resolved? Was it an Ignition Timing/Programming issue? Exhaust Pipe issue? How fast did it go? How long did one Fuel Tank last? Did she drown?

JB Weld would be wide open to expensive Liability Lawsuits if they misrepresented the Properties of their Epoxy Resins. I understand if it doesn't meet Aviation Standards. I think the choice is really just one of convenience. Devcon Aluminum Liquid is easy to work with, as it pours well and...

"J-B Weld™ has a tensile strength of 5020 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured." versus "DEVCON Aluminum Liquid (F-2) Adhesive Tensile Shear 2,700 psi and Temperature Resistance Wet: 120°F, Dry: 250°F" JB Weld is twice as strong and...

So in a recent thread discussion about epoxy filling, some Members used steel epoxy (JB Weld) while some recommended using aluminum epoxy like Devcon. Seems like having like/similar metals would make sense, but does this make thermal expansion sense? As in the epoxy filling/patch expanding and...

You can compare the Vessel to an Impact Phillips Tip. If same, then all good. Best test is to actually see how it actually fits the Mikuni Carb screws. The difference from a regular Phillips will be obvious, as the JIS tip will NOT cam out or strip the Screw. American Tips were designed to...

Plus he's using an MSD Enhancer (DC) which runs directly off the Battery...

Is that a Powervalve Cylinder? If so, those might be $200 dolla Forged Pistons; jus' sayin'...

Take compression readings and see if its past the Service limit. Just hook up a Battery with a Remote Starter to the Starter for the test. Don't need E-Box, Intake nor Exhaust Manifolds. Just Cylinder Head. Can do it outside of Ski.

You can also attach sacrificial Zinc Anodes onto some Aluminum Parts like the Ride Plate, similar to how Yamaha puts a Zinc Anode inside the Cylinder Block. Galvanzing Spray Paint can help also:

Yes, anodizing creates a non-conductive aluminum oxide layer on aluminum that serves as an electrical insulator. No Bueno for Ground Cable...o_O

For those who think that a bad Battery Ground location will not damage electrical components or cause erratic performance, go ahead, do the experiment. Bolt your Negative Battery cable to your Flywheel Cover and expose your high dollar components to this abuse. Prove it on your own Ski. Are you...

Ya, the Magneto must look like a 4th of July Fireworks show inside having most of the Current arcing thru the Stator, the Flywheel, the Cover, and then to the ill-placed Battery Ground. :oops: Might have even blistered the Crank Ball Bearings :(

Is that Negative Ground Wire connected to the Starter Ground Bolt or to the Bedplate? What is it connected to?

A bad/weak Battery can also put excess strain on the Stator... Battery might also have a bad Ground/Negative Post/Plate. The MSD also runs off the Battery. What is the model, brand and engine specs?

From Jetski Solutions: "Another interesting point is the "sparks when you let off the start button" syndrome. This always means one of two things......the cdi is bad, or the pulser coil is bad, or the wire from it to the e box is open."