Just part of the power valve and porting design of the engine. Helps pump that exhaust/intake.what are the two vent like holes in the old piston for?? does it allow more fumes out? View attachment 19730
Measure that Ring end gap in the cylinder.and what ye think of the old and new ring.? iv one on top of the other to show the difference in the ring gap ..its level on the left side View attachment 19731
My new piston didn't have the holes either but the old one did. Did it matter? I didn't get mine running yet BC the bottom end seized.what are the two vent like holes in the old piston for?? does it allow more fumes out? View attachment 19730
and what ye think of the old and new ring.? iv one on top of the other to show the difference in the ring gap ..its level on the left side View attachment 19731
It doesn't matter. Fix that bottom end and you are good to go! -BIG DANMy new piston didn't have the holes either but the old one did. Did it matter? I didn't get mine running yet BC the bottom end seized.
Make sure your power valve is working correctly.i fell there isn't the same kick off the powerband since i put the new piston in..but don't take my word for it..it might be nothing to do with the ports/vents//holes
whats the had easiest way to find out if its opening correctly?Make sure your power valve is working correctly.
Make sure your power valve is working correctly.
Only way to check it is Remove cover and make sure it moves freely. There is no way to run the bike and check it.what would u say would be causing it not to open correctly?? and how do i check and fix it.???
Only way to check it is Remove cover and make sure it moves freely. There is no way to run the bike and check it.
how long do rings generally last?? (hard riding kx 125)