The motorcycle is eating oil, has anyone else had this?

Yikes. How did you break that in? What oil are you running?

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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?

@Konstantin - Is that a cylinder wall scraped?

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.

Must of been a Monday hangover bike. I’m hoping it’s under warranty. Good pics and a good shop it looks like. Hope they take care of you.

Nomadic_adv said:

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.

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I wonder how one rescues ceramic-treated cylinders after a boring job?

R & R. Remove and replace at any cost. Welcome to 2022

Is 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.

DoubleThumper said:

I wonder how one rescues cermaic-treated cylinders after a boring job?

Click to expand...

Cylinder coatings can be stripped and re-plated by companies that do that work - Millennium Tech as mentioned, US Chrome, etc.

The CRF1100 does not have separate cylinders - the cylinders are part of the main cases.

I thought it was a CRF1000 originally.

Came across this video of the Talon 1000 engine rebuild which is based on CRF1000 and a decent look inside the cases.

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How bad is the oil consumption?

I never paid attention that the cylinders are not replaceable. Then again, Honda motor I wouldn't ever expect high oil use issues either.

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Not sure I understand, are you saying you were burning oil right from day 1?

Hope Honda steps up and gets properly repaired or replaced.