![Image](http://i256.photobucket.com/albums/hh188/chrisk8226/20160203_212605_zpse7e02kbe.jpg)
The bore is looking a bit worse for wear but I am not sure yet if that is alloy deposit or actual scoring. I am going to etch it to see what happens when the alloy dissolves. Might end up being able to just hone it with any luck. These are only the shakedown barrels so if they are a total loss at this bore size, so be it. I could bore them out for the custom pistons I have for the new motor but I might as well just go to the multiports and be done with it if it's not a quick fix.
![Image](http://i256.photobucket.com/albums/hh188/chrisk8226/20160203_2140560_zpsl84vqgzr.jpg)
I think the piston may well be stuffed!
![Laughing :lol:](./images/smilies/icon_lol.gif)
![Image](http://i256.photobucket.com/albums/hh188/chrisk8226/20160207_163127_zpsjhxqyu7t.jpg)
So what was the cause? We suspect we had an airleak on this side as the CHT was up to about 135 so it would have been running lean. When I split the crankcase, the centre bearing o rings disintegrated. This was a brand new Cruizin Image one. The challenge now will be to try to clean out all the bearings insitu to make sure there is no piston residue lurking in there as well as make new o rings in place to try to save having to tear down the crank.
We also scored a cracked head earlier in the day. Unusual in that we were only running standard compression and the head torquing was carefully done. The head gasket blew out completely but I'm not sure which was the chicken and which was the egg, I suspect the crack came first. Luckily I had some spares.
![Image](http://i256.photobucket.com/albums/hh188/chrisk8226/20160203_194641_zps4zc43ntv.jpg)
Oh, and just to prove we were there
![Very Happy :D](./images/smilies/icon_biggrin.gif)
![Image](http://i256.photobucket.com/albums/hh188/chrisk8226/20160122_1714331_zpshmqcyvgr.jpeg)