View of the piston head while still in the car

[DrJeff]

So I thought this might be interesting... used a very slim camera to take photos inside the cylinder (which is was still in the car). I was looking to get pictures of the cylinder head.

I got into the cylinder with the spark plug removed. The camera tip didn't provide enough light (or rather the light doesn't cast more than 1cm from the lense) so I also dropped a small led into the chamber to light it up better.

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The surfaces may be blacker than expected. I had a high idle (1100 rpm) and the plugs were fouling badly (but not bad enough to stop the engine).

This one is the top of the intake valve looking down from the injector port.

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I did have to increase the brightness and contrast to make the photos view ready.

[Bitsyncmaster]

Pretty cool photos. I would have expected to see a ridge at the top of the cylinder at the highest point the piston rings contact. Looks like the honing marks are still showing in the cylinder.