I wouldn't spend any money on it until you get it registered in your name. Right now it belongs to your late grandfather.
DO NOT USE PRESSURE TREATED LUMBER ON ALUMINUM
the chemicals in pressure treated lumber will dissolve the aluminum.
Fiberglassics may have a sears listing for the...
go to an OMC dealer. most I paid was $0.50 per O-ring in the middle of nowhere. I bought 6 and there are still 4 of them on a nail in my buddys garage.
Go to NAPA for welsh plugs. they probably have O-rings as well.
complaining about people on ebay capitalizing on people with telephobia /...
no, the flywheel wont swap back and forth from a 2-piece RMS block to a 1-piece RMS block
if the block is cracked, the heads are most likely cracked.
cant take pistons and swap, that takes re-machining the bores, and most likely they are no longer round.
Yes, it can be restored
No, it will not be cheap
Yes, it will take a lot of work
The "orange" crumbly stuff is the foam core. That is shot
No, I wouldn't take it out on any body of water bigger than a 40 acre pond
Thru the dealer or the company that made your motor. Can't help you beyond that because you have not stated what motor you have.
List of engine publication links in this sticky. https://forums.iboats.com/threads/winterizing-inboard-and-i-o.770207/
the 228 motor is an early flat-tappet SBC, flywheel rated at a supposed 228hp when new, about 190hp at the prop. The 228 is a 2-piece RMS block with the big flange on the crank. the motor would have come with a 153 tooth flywheel
the '99 5.0 is roller cam vortec headed motor, about 270hp at...