Fun with a borescope
Popular Reply
Sep 29, 2022, 04:52 PM
I couldn't picture this being any more boring. On a good note, I'm honing my humor.
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Road Captain
Joined: May 2007
Posts: 547
Likes: 389
From: PNW
#2 then #1 cylinders. The last picture appears to show some light pitting not really sure. 3rd pic has some really light vertical lines, 4th and 5th was a ball of something on the piston top.
engine has 7k on it vented the breathers to the atmosphere at approx. 2k. only use chevron gas 90%+ of the time.
engine has 7k on it vented the breathers to the atmosphere at approx. 2k. only use chevron gas 90%+ of the time.
Grand HDF Member
Joined: Jun 2017
Posts: 4,667
Likes: 3,965
From: Near Yosemite
Let me know what you find there buddy.........
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Stellar HDF Member
Joined: Sep 2017
Posts: 2,143
Likes: 576
From: memphis
lol..I have one from Amazon that I had to use to when I drilled and tapped a spark plug on my 02 harley f150. couldn't believe how sharp it was...cheap too.
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Road Master
Joined: Jan 2015
Posts: 1,190
Likes: 805
From: Washington
Those pictures really bring out the truth about borescopes. When you look at them closely ask yourself this - what is normal, what is not? What should it look like? Is anything in there a real problem, or just a theoretical problem? Reminds me of when I was a young engineer for a natural gas company. We bought an $8000 Olympus borescope, which was a lot for 1982. One of our big 4000 hp Ingersoll Rand compressor engines was having problems, so they sent me and another young engineer to borescope the massive cylinders. We got with the maintenance crew, some of who had decades of experience. We all peered down the sparkplug hole looking at the inside of a cylinder head. Was it cracked? We weren't sure - maybe. The young engineers and the highly seasoned mechanics all took a look, then we discussed it and reached a consensus - yep, it looked like a crack. The head had to be pulled, no small project on a machine this size. We finally got the head off and what did we find for 'cracks'? Anti-seize.. Someone had put a bit too much on the sparkplug the last time it was changed, and it spread out from the sparkplug hole. That was our 'crack'. The young engineers, the very experienced foreman, and the well-seasoned lead mechanics all got it wrong. So if your going to use a borescope you really better know what you are looking for. And next time you get a colonoscopy - well, think about this story a bit.
