What can I do with this 3.2l engine?

[seningen]

Originally Posted by elgyqc

The pistons did not seize... they all slid out normally when I separated the cases



The pistons seem to be OK, I'll have to do a closer inspection. I'll have a look at your links.

My guess is you have thrust wear. The motion of the pistons going up and down have a component of pushing against the wall. Partly due to geometry of the rods/wrist pins and probably gravity as well.

It's been awhile, but I did send off some blocks to have them nikisiled and then honed by Millenium Technologies

[elgyqc]

Originally Posted by seningen

My guess is you have thrust wear. The motion of the pistons going up and down have a component of pushing against the wall. Partly due to geometry of the rods/wrist pins and probably gravity as well...

That makes sense. All of the scuff marks are on the top (as in top of the engine, not top of the cylinder) and bottom, which is what I would expect for thrust wear.

I had a closer look at the pistons. There is only normal wear on the skirts as far as I can see (not that I am an expert), the rings look like new and turn easily in their grooves, the rod bushings are tight when I try wiggling the rods laterally.