Don't touch it with sand paper.
I'm more concerned with the liner, it doesn't look level with the top of the block.
How does it compare with the others?
 
That bore doesn't look good in all honesty looks like slight corrosion damage..
Also as said above the liner doesn't look level with the deck of the block.
 
That bore doesn't look good in all honesty looks like slight corrosion damage..
Also as said above the liner doesn't look level with the deck of the block.
Piston also looks way too clean, unless it's been done since the head came off
 
I notice a ridge (i can feel it easily with my finger) on all the rigth bank cylinders (first picture), and none on the left bank ...i cant explain this difference...the 8 cylinders where rebuild 10 years ago...
IMG_4767.jpg
IMG_4769.jpg
 
Are you sure ?? My compressions were good before stripping.
I'm no expert on the V8, but from what I have read over the years on LZ, if the liners have dropped, it will constantly blow head gaskets and the liners may actually move up and down. As far as the liner with the score is concerned, if the score is as deep as it looks, to me that would at least need a re-bore or a replacement liner.
 
I just checked it again : the circle at the top of the cylinder is thicker than the rest, probably the fact that the piston does not work on the upper part...
 
I'm no expert on the V8, but from what I have read over the years on LZ, if the liners have dropped, it will constantly blow head gaskets and the liners may actually move up and down. As far as the liner with the score is concerned, if the score is as deep as it looks, to me that would at least need a re-bore or a replacement liner.
The liners certainly moved on my old engine, you could hear them when it got hot enough. It didn't blow the gasket but it didn't need to as the oem liners don't touch the gasket (which is why top hats work)
 

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