Username Protected wrote:
It looks like the studs are too short. On the video, you can see that the nuts on the next cylinders are 2 or 3 thread short..
Possibly that the studs installed were short and a couple of nuts on the bottom fell off, and the upper ones fractured right after.
Very strange.
But it looks like it could have been from the overall.
Franck, I agree with that. A few of the top studs and 2 of the bottom ones look like the last 2-3 threads are pulled (stripped) and the lower stud 4-5 oclock position has the last 1/4" broken off . Not enough thread engagement
I dont know much about lycoming engines but a quick google machine inquiry mentions something about the all engines since 1987 being a wide deck cylinder configuration thus not requiring the hold down plates, and uses external nuts I see hold down plates and internal nuts). Could this also include any new cylinders put on during rebuild or top? I really dont know, just asking the question.
https://www.lycoming.com/sites/default/ ... ngines.pdfHere is the SB I found
