Winter rebuild

[wristwister]

Are you planning to work with an engine machine shop on this? If so, I'd suggest you have them take a look at the block and advise. If they don't see any obvious show stoppers, they'll probably recommend hot tank and magnaflux. That will strip away the crud, and identify if there's any cracking.

Assuming it passes that, you may want to have them measure the cylinder bores for wear and taper. Depending on what they find there, they may recommend boring, sleeving, or just a quick hone if everything's in spec. If they bore, you'll probably need new oversize pistons.

Assuming all that is fine, they'll probably suggest decking it (fly cut on top to assure perfect flatness for the cylinder head).

Oh, and chances are after you pull the crankshaft you won't like the looks of the journals. Machine shop can freshen those up, but then you'll probably need oversize crank bearings.

All this stuff is available through Moyer, and Don will appreciate you helping him make his next Porsche payment!

Welcome to the club!

[sastanley]

Koerk, I know you are out to sea, so you may not see this for a bit, but the nice thing is at least you can get all the parts from Moyer. I used to be scanning the interwebs for blocks, but now (even though they are not cheap from MMI) at least they are available. I am running an MMI manifold on my engine.

[Koerk]

Thanks for everything.

I have perused the recent posts, thank you for all the help and advice. I have decided the best thing to do going forward is to strip it all down and just have a machine shop check the block for cracks and then move forward from there. If its not viable I'll be installing a new westerbeke 3.5 kW gas genset and go electric drive. I can't wait to get back at it in February. Happy New year to all!. Cheers!

PS: She is raw water cooled and has only been run in salt water off the coast of Nova scotia.

[Mo]

Nova Automotive could check it all out for you. They've also rebuilt a few as well that I know of.

[Koerk]

Back at it again.

Good day, gentlemen. I am now back to work stripping the engine bare. Thanks to Mo. I have been in talks with a local machine shop regarding hot tanking and checking the viability of the block.

So far I have only removed the aft housing and reversing gear, Exposing all the drive gears for the cam shaft, crank shaft, oil pump, and accessory drive.

With the pistons still siezed in the cylinder. I'm wondering if I should continue and attempt to free the pistons now or move forward tearing the crank out and then the cam and finally free the pistons. I'm curious as to your oppions as I'm leaning for the route that yeilds the most progress durring my short time home.

Cheers.

[joe_db]

Take the crank out first. Then you can whack the pistons one at a time

[lat 64]

There a few stories on this forum of motors worse than yours being revived. But those projects were usually done by some well-experienced mechanics. The labor bill for shop work is different for them.
I would be cautious about going off the deep end with a project when there are often running engines or better rebuildable cores to be had for anywhere from $500 to $1500. A running engine is NOT a guarantee, but repairs can be assessed more completely.

The economics of restoring a poor core can be a deal breaker. Keep a weather eye on the market for other donor engines, and stay off the the lee shore of a costly rebuild budget.

Cheers,
Russ

Just saw this today:

https://maine.craigslist.org/bpo/d/wiscasset-antique-boat-parts/6812778714.html

.

[Koerk]

The economics of restoring a poor core can be a deal breaker.

Thanks for the heads up. I have been watching the bottom line closely, If it amounts to being a lemon after consulting the machine shop I will probably look for a small gen set and convert to electric propulsion.

[Koerk]

Oil pan removal

Moving ahead today I have removed the oil pan, to expose the crank, upon early inspection there is corrosion in the cylinders. Number 4 was the worse while #1 remains pretty much clean, this was to no surprise as I knew water had entruded into my number 4 cylinder, while cranking with my seacock open. Rookie mistake.

[ndutton]

Have you established a not-to-exceed budget for this project yet?

[joe_db]

http://www.moyermarineforum.com/forums/showthread.php?p=115817#post115817

You might start with something like this instead of your block.