I have similar covering boards on my '67 Sea Skiff Corinthian. My covers fit into a slot behind the coming boards and are screwed to a cleat at the bottom. Mine are 1/4 inch mahogany veneer marine ply, stained and varnished. I can't imagine CC gluing them to to a cleat. Might be bedding compound.

Those Detroits are designed to run flat out for a life time. They are governed to the design speed with a safety factor. If they can't get to 2400 - 2500 RPM they have a problem perhaps. Typical cruise for 2-stroke 71 series Detroits 2100 to 2300 RPM.

You didn't state size. I guessing the boat is 48 to 55 ft and has a pair of 6-71 GM (Graymarine) engines. They were found in 50s and early 60s cruisers at 40 ft plus. If you did 8 knots at 1500 your were not planing, just pushing water. I would guess top speed at around 12 - 14 knots depending on le...

I agree with the comments on "look inside". I had an issue under the galley a few years ago from a pile of saw dust under the cabin sole with the galley cupboard on top of that. This spot is under the couch with cabin sole under that. I have added access hatches in the area many years ago and have p...

The delaminated area is about 4 inches in diameter, It doesn't reach the edge of the strake. We found it by "sounding" the bottom with a leather mallet. The surveyor didn't pull any fasteners. This boat has never seen salt water and because of that the underwriter doesn't require pulling fasteners. ...

Well I call on the shipwrights and sea skiff restorers for some comments. I had a survey on my 1967 35ft Corinthian Sea Skiff cruiser last week and he found a delaminating strake in the bottom., midships near the turn of the chine. Its really close to launch time here and I don't want to try to fix ...

The original vent set up had an oil mist separator in the gallery.

I have always used caulking cotton, like used to caulk plank seams. Then, bedding compound under the trim ring.

You're going to get 5 or so gallon of nasty black diesel lub oil out of each 8-71. Keep lot of oil rags handy. Changing the filters is fun too.

Go to a good old fashioned auto parts store, maybe a NAPA, and let them help. There are catalogs out there of all sorts of part like PCV valves et al. A big box chain store won't help. But the valve you need is likely used on a tractor or some industrial machine. A bit of research should turn one up...

I'll be watching to see how you do on the learning curve. I've tended to my 1967 35 ft Corinthian Sea Skiff for almost 30 years. I've learned a lot but some learnings just won't come; like cabin leaks.

I had a memory dump today and re-discovered an article I read that might be pertinent. It was in Hemmings Motor News within the last two months as I recall. The article described a similar idle stalling problem. The article said the Rochester Q-jets have two float bowls, one for idle and one for hig...

I definitely have the problem of dry float bowls after sitting for 4 days. I just crank till I have fuel and then my engines start right up. The extra cranking is tough on the starter I suppose but it lubs up the engine before it starts which is not all bad. I recently read an article that said Cart...

Just maybe your problem isn't with the fuel pump. You say stalling occurs as you pull back to idle after running at speed. If you were having fuel starvation it would show up at speed, usually. I'd suggest you consider this. I don't know which carb you have (Holley or Carter/Edelbrock) but both have...

Halon cylinders are not re-fillable any more. EPA Still meet fire supression requirements for small craft.

It's pretty likely your housing has siezed to the studs. Aluminum castings with steel fasteners is a problem They needed to used some anti-sieze. I think there is also two water passages involved that can form a bond aluminum to iron. A friend of mine had this issue and had to a lot of heat to get t...

My 1958 30ft CC Sea Skiff was 12 volt from the factory. So was the 1959 that my father had. The 21 ft pre-cavalier we had was a 56 model and it was 6 volt.

Where the wood has de-laminated it has lost most of its strength. Replacing it is really a safety issue. Your hull sides are probably 3/8 or 1/2 inch mahogany venier marine grade plywood. That stuff is still around but probably not local to you. If the de-lamination is at the stem I'd suspect there ...

I'm very familiar with generators. The Onan 10KW is probably an odd ball four cylinder Onan engine. They made it both water and air cooled. The difference being the cylinders which are cast in pairs sort of like a motorcycle or an early car engine. If its not stuck getting it running should not be a...

The thermostat was designed and manufactured by Holley, the carbeurator company. The down side of the Holley design is that is limits the cooling water discharged into the exhaust system hence the piping run a lot hotter.

While you have the head off, at least check for burned exhaust valves. Burned valves lead to valve seat and block cracks which are so common on the old Herculese engines. Burned valves don't show up on compression test until they are really bad. Usually you can hear them in the exhaust note. A burne...

You might want consider installing hard valve seat inserts. All the Hercs are prone to valve seat cracks.Some machinists used to have ( and still do) portable boring machine that can do the machine for valve seats on site.

Its a gear type pump. You can tell by the grease cup and the two bearings bosses cast into the cover.

I have a '67 35ft Corinthian Sea Skiff. It's a great heavy weather boat. I've had mine for 28 years. I can supply information as needed.

Vacuum leaks? Check the PCV valve first. Stuck open it makes a big vacuum leak.

That is most likely the automatic choke setting. There is a fast idle cam that bumps up the idle speed while the engine is warming up. These could have two different mechanisms to sense engine temp. The earlier method used by cc and others was a well cast into the exhaust manifold into which was ins...

If your Paragons are making a lot of noise at low speed there is a high likely hood you have a carb that has a blocked idle jet and at low speed your engine is running on 4 cylinders instead of 8. Its a common problem. That would relate to stalling as well.

Don't overlook a vacuum leak, When you pull back the throttle, you shift the carb from main (high speed) jets to the idle jets. The air flow in the carb makes that happen and its vacuum driven internal in the carb. If you have a vacuum leak this process is disturbed. Also want to make sure the carb ...

I have seen and experienced this before. What I finally discovered is that the carb idle jets are often set too lean. I have a similar issue with my 327Fs. Once they get good and hot, the air in the engine room is warm, the intake manifold is hot and that also leans out the the mixture. What I do ru...

I store outside in MI. I have a big canvas tarp and a steel tube frame to hold it up. It beats paying $500-600 a year for shrink. Besides, the boat likes having lots of fresh air circulating. As for fuel, I store with as little fuel in the tanks a possible. I want just enough fuel to get to the fuel...