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1993 Seadoo GTS

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DocDoug

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'93 Seadoo GTS Ride Plate Screw Question

MY FIRST POST!!!:)

After 16 years of riding, I decided it was time to replace my wear ring. The cavitation was TERRIBLE. Every manual I read indicated that it would be easy to remove the jet pump. NOT. I had to attach ropes from my jet pump to my spare truck's hitch and pull with the other vehicle. AND I MEAN PULL. I snapped the trailer crank rope to ski and upgraded to a chain. I subsequently straightened two "S" hooks. I doubled the chain and several hard pulls later... and I mean HARD PULLS with the car, the pump came out. :banghead: There is no way that any hand tool manufacturer, per Seadoo specs, would have ever worked. The pump had corrosion at the ride plate. (Both are metal on early Seadoos.) The good part, the wear ring had chunks missing and the impeller looked good!:hurray:

The bad news is, four of the six stainless screw heads holding the ride plate stripped. I made the mistake of drilling the heads off to remove the ride plate figuring I could use an easy-out to remove them later. I subsequently destroyed one brand new Sears easy out kit (1/4"). These screws are seized good. Yes, I used PB Blaster for four days straight while attempting to remove the screws.

Does any one know what makes up the internal threads for the ride plate? In other words, can I drill and retap or oversize drill and add helicoils? I see that a sealer is used inside the hull above the threads... I simply have no idea how they are attached within the fiberglass hull.

Finally, from my photos, notice at the lower left bolt that holds the pump there is a fiberglass crack. This has been there since day one but not as noticeable until the pump was removed. I always thought it was a small crack.

Nothing is ever easy for me. :(

I do love the stabality of my old GTS and the fuel efficiency of approx 50 HP is good too. I have to get her fixed.

ANY assistance or feedback is GREATLY appreciated!:cheers:

DocDoug
 

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First for the bad news you didn't need to take the ride plate off!! the pump will come out without removing it.. I think the screws are 4mm or 5mm... I would carefully drill them out and get a none tapered tap (Bottoming tap)to clean the hole up after drilling http://www.mcmaster.com/#8305a56/=2t9l1b just be sure to check the pitch of the thread on the screws so all matches.. The site is McMasterCarr, great place for hardware etc.. Be sure to seal the ride plate, or you will get a lot of cavitation if it is not a good seal.. Here is the link for the screws.. http://www.mcmaster.com/#metric-machine-screws/=2t9mq5
 
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