Props
We are indeed talking about the same engine, I confirmed. I had a manifold replacement in 2004 I found. No evidence of overheating. I am having the exhaust replaced so maybe that is a good time to repack the shaft. You are right about that. Based on your input I am going to keep it and delay repowering.
Any opinion about replacing the two blade prop with a three blade prop while she is being bottom painted next month?
I like your hand grenade solution for fwc. Now I have invented a laboriou method of gravity feeding fw through a hose connected to the fuel strainer after use. Strictly preventive and the experienced ones say do t waste my time.
If I do flush it out with a descaler can resulting floating rust flakes cause blockages?
I have a closed engine bildge on three sides so drippage is going go be a problem. Thinking of drilling a weep hole con ected to a hose go the bilge. No dripped oil evident down there.
You guys are being a great help.
Regarding the prop question, we have a couple years with a fixed two blade, ten years with a two blade featherer, and now several years with a three blade fixed.
Best and most controlled backing up and general maneuvering was with the featherer. Of course it was a half knot faster under sail, too. (When budget allows, we will change again to a feathering three blade!)
Best power and thrust is with the fixed three blade, by far.
So-so for reversing -- plenty of thrust, but some obvious port walk, too.
By comparison, our boat could motor about 6.5 with the various two blade varieties.
With the present three blade, she does 7.0 or 7.1 all the time, slowing down to mid 6's only for chop.
Powering, I run it at the 2500 rpm the book recommends.
As noted, we do pay a price when sailing, however.
Loren