nmurph
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- Nov 26, 2007
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there have been several threads about AM P/C's for 346's and the like. here are some pics of a NE 45mm kit that i recently bought from an ebay seller. i actually bought two, but the other one had plating missing 2mm out from the port chamfers and it was returned.
the piston/cylinder were installed without a gasket and using the included circlips. the clips will probably be replaced with OEM when i open this saw back up for improvements, but they fit the groove well. squish was about .024". i don't remember taking a compression reading when it was new. i have run four tanks through it and i will try to get a reading. the saw began life as an OE model and the muffler was modded with a 288 deflector. i ran it side-by-side with a similar MM OEM NE saw (is running a gasket) and could not tell any power difference.
the I/E ports are symetrical, but there was a good bit of smoothing than can be done, and the chamfer on all ports can be improved. the plating is even and goes to the top of the cylinder. the divider on the lower transfers is WAY large. again, it needs some improvement. i have not done any grinding and won't do so until the warranty period is up. then it will get the full treatment.
these kits aren't perfect. i have seen much better AM P/C kits. but for half the money, and with some work, i think it might be a suitable alternative for those on a budget or looking to get a beater saw back to work
if you have questions, ask away.
the piston/cylinder were installed without a gasket and using the included circlips. the clips will probably be replaced with OEM when i open this saw back up for improvements, but they fit the groove well. squish was about .024". i don't remember taking a compression reading when it was new. i have run four tanks through it and i will try to get a reading. the saw began life as an OE model and the muffler was modded with a 288 deflector. i ran it side-by-side with a similar MM OEM NE saw (is running a gasket) and could not tell any power difference.
the I/E ports are symetrical, but there was a good bit of smoothing than can be done, and the chamfer on all ports can be improved. the plating is even and goes to the top of the cylinder. the divider on the lower transfers is WAY large. again, it needs some improvement. i have not done any grinding and won't do so until the warranty period is up. then it will get the full treatment.
these kits aren't perfect. i have seen much better AM P/C kits. but for half the money, and with some work, i think it might be a suitable alternative for those on a budget or looking to get a beater saw back to work
if you have questions, ask away.
