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rebuilding a 91 lt80 can anyone help


OPENWHEEL88

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Yes, a repair manual is a must, it has information that you need when working on a specific machine, important stuff like torque specs and such. The key components in a routine rebuild of a two stroke are piston, rings, cylinder hone or bore, crank seals, reeds, and ofcourse, all necessary gaskets. All this can be done without splitting the lower engine case. You will want to check the crank, connecting rod, and all the bearings that go with them. If any of those need replaced, you will need to split the case halves. You will also probably want to check the centrifugal clutch and the other components of the drive system.

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There should be a line up dowel in the groove on the piston, make sure the gaps in the rings sit on either side of that dowel. Then you should be able to use your hands to pinch the rings in tight as you slide the cylinder back on over the piston, it isn't the easiest thing to do, but it can be done. I have done it several times, and I actually, think it is easier that using a ring compressor. I have one and unless I am working a car engine, I don't use it.

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