Do these pistons look normal?

[ahl395]

Hey guys,

Checked over my car this weekend, did a compression test, etc. Stuck my Android endoscope into a few cylinders and found this.

Piston seems real clean and shiny in the middle, but there seems to be a hard line where the sides are black. Anybody ever seen this before?

Compression was 205-220 between all cylinders. Plugs looked okay, a few had a little carbon on the threads. I think I have a coolant leak somewhere but I can't see how that would be related.
Car is Procharged and meth injected.

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[Crackerjack17]

It's hard to see, cause hazy, but looks normal to me. You saw my pistons, other than the cracked ones it ran fine. That line is the raised portion in the center of the piston. Your sorta seeing a shadow were the light isn't reflecting back directly at the camera like the middle part is.

 

[BluePonyGT]

Looks super clean to me. The fact that you can see the micro dot is pretty cool. In fact I bet you can scan that thing from the picture.

 

[ahl395]

It's hard to see, cause hazy, but looks normal to me. You saw my pistons, other than the cracked ones it ran fine. That line is the raised portion in the center of the piston. Your sorta seeing a shadow were the light isn't reflecting back directly at the camera like the middle part is.

Thanks for pointing that out, I looked closer at your pics and I didn't realize the middle of the piston was raised like that. Just the reflection in the middle makes sense. Thanks for putting my mind at ease, I need to take a chill pill :lol:

Looks super clean to me. The fact that you can see the micro dot is pretty cool. In fact I bet you can scan that thing from the picture.

Thanks, yeah I am happy at how clean it looks I think that's from the methanol injection. I was worried about why the edges were so black but now it all makes sense... :headbonk:

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