Reply To: Mercury force cylinder rust damage… Usable?

[Beno]

I understand boring and sleeving somewhat.. it gets a little complex I think with sleeving you can pick your piston size because you’re inserting new material and having them either come as they are or made to your specification.

With resleeving I believe they shave out the old sleeve until it’s paper thin then peel it away like paper. Then press in new ones (and I was even told that they bore again after that because the sleeves comes a bit too small on purpose)  so I think you can choose (reuse) your piston size? (Or even return to the original size for your engine in case it’s been bored)

With boring I think you just increase the current steel hole diameter of the current steel by a  predetermined thousands of an inch.

Boring may be cheaper but I would still need to pay $200+ for boring all.3 holes. then 3 new oversize pistons, 6 new rings.

Easier to find an engine on the back of the boat that nobody wants at a garage sale.  Unbolt the head it and drop it in the jetboat