- Location
- Boynton Beach, FL
I have my 2002 701 62T/61X motor out, to replace the starter and bendix. Its entirely stiocRemoval of the flywheel revealed oil and sludge built up in the casings and stator- a leak.
I cobbled together a leakdown tester and pressurized the motor, the leak in the flywheel housing area can be felt with your hands. For assurance however I submerged the pressurized engine in a clear storage tote filled with water and discovered that there were in fact 2 leaks, these leaks are not failures in the crank seals however, instead both leaks are located along the seam of the upper and lower casting. One leak is present 1 inch over form the crank seal, the other present in between cylinders. There are no obvious defects in the casting lines so I assume its just a nearly decade old sealant beginning to degrade on a motor that appears to never have been previously torn down.
I reassembled enough to perform a compression test this morning, no carburetors, fresh battery, cold motor, mid quality compression gauge (from sears many years ago) : reads 127/125.
I've owned this boat for 4 years, it still gets along just fine compared to other stock RN's and does not seem down on power, THRUST has had the boat in his shop a few years ago and it passed his inspection then.
So how far would you go into this teardown. New rings, new oil seals, and properly reseal the cases? or am I in cylinder work territory?
I cobbled together a leakdown tester and pressurized the motor, the leak in the flywheel housing area can be felt with your hands. For assurance however I submerged the pressurized engine in a clear storage tote filled with water and discovered that there were in fact 2 leaks, these leaks are not failures in the crank seals however, instead both leaks are located along the seam of the upper and lower casting. One leak is present 1 inch over form the crank seal, the other present in between cylinders. There are no obvious defects in the casting lines so I assume its just a nearly decade old sealant beginning to degrade on a motor that appears to never have been previously torn down.
I reassembled enough to perform a compression test this morning, no carburetors, fresh battery, cold motor, mid quality compression gauge (from sears many years ago) : reads 127/125.
I've owned this boat for 4 years, it still gets along just fine compared to other stock RN's and does not seem down on power, THRUST has had the boat in his shop a few years ago and it passed his inspection then.
So how far would you go into this teardown. New rings, new oil seals, and properly reseal the cases? or am I in cylinder work territory?
