Sabre also built their own exhaust pipes out of standard 1 ¼" black iron pipe back in those days. Eventually they fail either by clogging or rusting out. The big box hardware stores have the pipe and fittings.That exhaust pipe is galvanized and needs to be replaced. Catalina did that in the 70's. My 27 had the same thing.
Every day of the week!I’d rather had the A4 over the Volvo..
Absolutely no reason you cannot do this in the slip. People do it all the time. I have a mechanic friend who swapped an A4 in his Cal 34 by himself. With a friendI'm still reading on the subject but I may attempt to swap the A4 engines in the slip. While in the water.
Is there any reason this wouldn't work?
If he swaps one A4 for another A4 I don't see why there would be any issues with the prop shaft or anything else. It should be a drop-in replacement, easily done with the boat in the slip.If you are considering the Volvo 2002 as a replacement, don't do it to save money. Parts for the A4 are cheap and the Volvo, well, it's a Volvo. If you want a more efficient engine to get more miles out of a tank it may be worth it but for casual use, the A4 is a better bet. Remember, that Volvo was pulled out of a boat for a reason and may have it's own issues.
In theory, swapping engines in the water is possible as long as you don't run into any problems with the prop shaft.