No Peter I haven't. I got side-tracked.
Barry

I have taken a lot of motors apart in my days , and I have only seen the housings lift in the spark plug area on turbo motors.. turbo = more heat..answer cool the combustion chamber, how? water injection.. done

now the real issue with the rotary motor is apex seals.. Pete has mentioned this and it is the culprit of the rotary motor's failure rate.. I wish there was a seal that didn't warp, curl, break, or shrink, only in a perfect world