Marinette Boat Forum

L.L. Johnson lumber in Charlotte, MI.

I can't see clearly in your picture, but it looks like the notches on the tops of your pistons (not the valve reliefs, but the small notch to show installation direction) are facing the front of the engine. If they are, the rebuilder installed the pistons backwards.

Looking at your picture, I think you need to measure the diameter of your push rods. If they are bigger than 5/16" diameter (.290" is factory), then that is most likely the cause. Some rebuilders like to put 3/8" diameter push rods in rebuilds, and what happened to yours is usually th...

Did the valve break, or did the retainer loosen up. I have never heard of a valve breaking and not dropping. Either way, there is likely work that will need to be done on the head. The seat will more than likely have damage.

Every now and then I see this happen because the shaft coupling isn't tight enough on the shaft. Someone will install the new shaft seal system, set the preload on the bellows, and away they go. If the don't get the locking bolts tight enough on the coupling, or don't recheck them after the first fe...

The voltage reg is internal. It is inside the back cover.

I think you have a defective regulator. I worked at a starter/alternator shop for five years. We built many different custom 1 wire alternators and I have never seen one have to get excited to work, with one exception: some battery isolators will screw with a one wire alternator. The only piece of c...

You must have the old style 10SI se alternators. I have never heard of having to manually excite one. I know that all of the one wire alternators being sold today are using AC activated regulators. This means that they self excite at very low rpm almost instantly. They were originally created for th...

360 requires a different flywheel, harmonic balancer and oil pan.

Make sure your engines are actually wore out (excessive blowby, oil burning, knocking, etc). Of all the calls I get for replacing engines, only about 20% actually need it. The rest are electrical, fuel or tunning issues.

That is a new one for me. I don't think I have ever seen a boat ballasted, at least that much, in the stern. I was on a big cruiser that had something like 5k added around the engine because they pulled a Kahlenberg and replaced it with a Cat diesel. I would be curious to see how your boat sits in t...