So I have removed the power head, and just started disassembly of a 30 HP I am going to hone/rering/reseal...
I typically install head gasket dry on any motor, but have noticed a lot of guys will use gasket sealer on 2 stroke head gaskets, and i might do that this time around.. Also, the lower crankcase.. No gasket there of course, and I am wondering what a good replacement for whatever OMC used in the 90's.. SO I'll need 2 different sealer types, and looking for recommendations...
The cyl bores look VERY good indeed,- No ridge at all, still see some of the factory cross hatch.. However, when pushing the pistons side to side at the top of thier travel, there seems to be quite a bit of play. You will get a bit of a click pushing back and forth.. Not being a 2 stroke guy I am not sure if thats normal.. Engine was down on compression but even at 90 PSI each cyl., but I dunno, those bores look awfully good.. Tops of pistons look fine as well, no damage I can see.. I will know more when I get it totally torn down and miked, but at first glance, all i see are perfectly fine looking bores. not a line or scratch to be seen. Not sure if piston rings will 'wear down' enough on a 2 stroke to cause a 30 PSI or so per cyl compression drop, and still leave perfectly fine looking bores...Just worried about attempting to do the job right and still having only 90 psi per cyl....bob
I typically install head gasket dry on any motor, but have noticed a lot of guys will use gasket sealer on 2 stroke head gaskets, and i might do that this time around.. Also, the lower crankcase.. No gasket there of course, and I am wondering what a good replacement for whatever OMC used in the 90's.. SO I'll need 2 different sealer types, and looking for recommendations...
The cyl bores look VERY good indeed,- No ridge at all, still see some of the factory cross hatch.. However, when pushing the pistons side to side at the top of thier travel, there seems to be quite a bit of play. You will get a bit of a click pushing back and forth.. Not being a 2 stroke guy I am not sure if thats normal.. Engine was down on compression but even at 90 PSI each cyl., but I dunno, those bores look awfully good.. Tops of pistons look fine as well, no damage I can see.. I will know more when I get it totally torn down and miked, but at first glance, all i see are perfectly fine looking bores. not a line or scratch to be seen. Not sure if piston rings will 'wear down' enough on a 2 stroke to cause a 30 PSI or so per cyl compression drop, and still leave perfectly fine looking bores...Just worried about attempting to do the job right and still having only 90 psi per cyl....bob