bantamben

Is it possible to pull #6 piston without splitting case. I really want to just for fun pull the head somehow remove the wire clip pull the the wrist pin and pull the piston. My cylinder doesn’t look that bad when borescoping but I am getting about a 20% leak past the rings all other cylinders are closer to 5-10%

I would love to swap out a new piston and rings and just do a old school super light drill hone.

then drive it while I acquire parts and everything I need for a 4.0 rebuild. This is my daily driver

Charles Navarro

You can't treat an Alusil or Lokasil cylinder like other cylinders. There is no plating on the bore or liner there you can hone. The bore is raw aluminum with exposed silicon particles. Scoring is ploughing of the Al/Si matrix. You can't just hone it unfortunately to correct this issue.

cdk4219

# 6 is close to the oil cooler, I find that interesting and suspect.

cwheeler

Y'all don't have to think or try to discover "new" ideas about why the M9X can destroy itself. Hartech, Raby, and LN have been working and developing the fixes for these engines since they hit the market. Hartech has several e-books you can dl for free. Google searching will give you hundreds of threads where Charles and Jake have described these design choices and consequences. Raby and team have a couple dozen videos talking in-depth about the issues...

Fullyield

While this is true, I always welcome thoughts and from our experts like Charles and Jake. This field and science is not static. This is a good discussion.