John from Cle Elum
At some point a decision will have to be made.
Hi
I was milling a 24" doug fir using a 385xp on a pather mill. It was my first try milling. I was runnning great until about 5 boards into it when it abruptly quit. Not enough compression for restart. I rebuilt the thing about 10-15hours ago. New bottom end bearings, rebuilt carb, new Meteor piston and reused the cylinder. I was very careful about keeping things clean on reassembly. It was running great.
Tore it down and the piston was scarred a little on the top near the exhaust port and the piston side was deeply scored at the exhaust port. The cylinder is scuffed pretty bad but not scored. It may be just metal transfer. It might be ok. It looked like some debris found it way down the side of the piston. There was some hard non-metalic stuff on top of the piston. It looked like that, or something, else got between the cylinder and the piston. Very little carbon on the cylinder head or piston top. Questions:
Does anyone have an idea on the source of the junk? Where should I look. I am thinking it might be a bearing retainer or something. Could it have been carbon from the muffler or junk from the muffler that got there during transport.
Is there an aftermarket piston/cylinder that is worth the bother of installing. I probably don't want to go factory parts because of the expense and the conditon of the saw. I might try an after market if any one has had good experience with a particular manufacturer.
I will post some pictures later if I can get some good ones.
Thanks
John
I was milling a 24" doug fir using a 385xp on a pather mill. It was my first try milling. I was runnning great until about 5 boards into it when it abruptly quit. Not enough compression for restart. I rebuilt the thing about 10-15hours ago. New bottom end bearings, rebuilt carb, new Meteor piston and reused the cylinder. I was very careful about keeping things clean on reassembly. It was running great.
Tore it down and the piston was scarred a little on the top near the exhaust port and the piston side was deeply scored at the exhaust port. The cylinder is scuffed pretty bad but not scored. It may be just metal transfer. It might be ok. It looked like some debris found it way down the side of the piston. There was some hard non-metalic stuff on top of the piston. It looked like that, or something, else got between the cylinder and the piston. Very little carbon on the cylinder head or piston top. Questions:
Does anyone have an idea on the source of the junk? Where should I look. I am thinking it might be a bearing retainer or something. Could it have been carbon from the muffler or junk from the muffler that got there during transport.
Is there an aftermarket piston/cylinder that is worth the bother of installing. I probably don't want to go factory parts because of the expense and the conditon of the saw. I might try an after market if any one has had good experience with a particular manufacturer.
I will post some pictures later if I can get some good ones.
Thanks
John