Possible Water In Cylinders??

My 5.7L has the high torque (small) starter motor on it. A year ago it was very noisy (sun and planet gears worn). I decided to buy new rather than rebuild, cost was about the same. Went to the local auto shop (auto and marine starter in the high torque range are identical) to buy a new starter and the guy there asked me how many teeth are on the pinion gear. There were 3 different pinion gears he brought out in his hand and said if I didn't fit the correct one it would tear up the ring gear on the flywheel. So I went back home and got the old pinion and he matched it up and fitted it to the new starter. The new starter didn't have the same pinion as the old starter. The new pinion on the new starter was larger in diameter and had more teeth.
There could be the reason why !
 
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My .o2 cents, if you were hydro locking enough to take out a starter and flywheel ring gear you would certainly notice the motor running or bad . Get a second opinion...
 
I was looking at the starter/flywheel issue as separate from the water in the cylinders, though I suppose it might not be.

I'm no expert on this, but could a faulty/corroded power connection to the starter, or bad engine ground, cause the starter to not fully "throw" and cause the excessive wear?
 
tobnpr said:
I was looking at the starter/flywheel issue as separate from the water in the cylinders, though I suppose it might not be.

I'm no expert on this, but could a faulty/corroded power connection to the starter, or bad engine ground, cause the starter to not fully "throw" and cause the excessive wear?
Click to expand...

I think it might...or even a solonoid just about to quit.
 
I went down to the marina yesterday to check the boat out since the new starter and flywheel were installed. Everything hooked up and started perfectly sithout any wierd noises, and the engine ran perfectly, no miss, no overheating, no smoke, etc... I spoke with the mechanic and he said "the water could have been a fluke thing"???:smt013 I think that he is just trying to cover his a.. so he doesn't have to warranty another flywheel and starter should it go out again. My thoughts are that the first time the starter was dragging, not engaging properly, and ate the flywheel up, was due to age (the mech. thought that it could have been the original starter), the second time after he replaced the starter and flywheel was due to him either putting the wrong starter on or not aligning it properly. I am going to run it for a bit, and then let it sit for a while and then check myself the two suspect sylinders for water by pulling the plugs and spinning the engine over. Who know??
 
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