Yard Art
Posts: 58
Joined: Fri Jun 07, 2013 4:51 pm
SD-220 Rebuild help
So, I'm looking for recommendations for a plan of attack. I planned on disassembling the motor. I'm wondering if I should try and clean it up as best I can in its current condition at home, or take it to a shop and have it tanked. I can try and hose out the water passages, and do an at-home hone with one of those ball hones to try and clean up the bores. I'm not sure what I can do with the deck, maybe something like Roloc disks? I'm not sure how much cleaning would cause issues due to material removed.
If I take it in to a shop and have it tanked and inspected, I know the freeze plugs would be done for--but those should be pretty cheap and easy. I assume the cam bearings are non-removable/reusable. I'm not sure how much cost is involved in that. I'm wondering though, if I'm going to the trouble of taking the block to an engine shop and having it tanked and try to hone it out, replace new cam bearings and the like, should I just take in the original block from the truck and have it re-worked and swap over the internals from the rebuilt motor?
The problem I see with re-working the original block is the pistons in the rebuilt motor are all marked as .060. As I understand it, that's pretty much the end of the line for most motors. If my original block doesn't need to go that far, would it be a bad idea to punch it out that far? People say here these motors will "run forever" if well maintained, so it may not be an issue. I would very much like to avoid buying a new set of EGGE pistons.
I suppose another option is to clean up the rebuilt block as best as I can, then take it to an engine shop to hone it out. If it doesn't hone, I could have the one cylinder sleeved back to .060. I'd really like to leave the options open for a Keystone kit (or similar), so I'm not sure how sleeving figures into that. I'll probably either do some sort of forced induction, or maybe build a dual-carb intake for it.
Anyway, I'm open to ideas at this point. There's no machine shop in town, and I don't have a truck, so I'll have to cart these off in a trailer when I get ready to do so. I've called a lot of shops and they want to see everything first.