The motorcycle is eating oil, has anyone else had this?
I wonder how one rescues ceramic-treated cylinders after a boring job?Depending on how deep the grooves are, cylinders could be repaired like at Millennium Technologies in US and Honda has + 0.25 pistons and rings available for CRF1000 at least, if necessary. Certainly cheaper than new crankcases but definitely not an inexpensive rebuild.
The motor is running, just eating oil. It is not yet known what the officers will do.I'm not an expert but those grooves look severe. I wonder if the piston broke a ring or something. Is it the same on both pistons? Can these engines be machined and cylinder walls sleeved or do you just have to replace the cylinders?
Honda CRF 1100 2021Is this a CRF1000 or CRF1100? The cylinders are different designs. The CRF1000 has a steel liner bore and the CRF1100 is a hard coated bore similar to Nikasil. The cylinder scouring looks like a typical over heating situation where the piston outgrows the cylinder or a low oil partial seizure. If not under warranty and it is a CRF1000 it can easily be bored if oversize pistons are available. It looks like a .25 mm overbore will clean this up. I have a cylinder boring machine and have bored thousands of motorcycle cylinders over the last 40 years.