Bought a lovely fixer upper 43' steel Bruce Roberts Ketch
with an old Perkins
4.236 this summer. Was running like a top. Operative word is 'was'.
To make a long story slightly shorter, when we bought her, we had 2 weeks to get her in the water
, and back to our home marina, so a lot of what should have been done before launch was not. My fault entirely. Bottom line is that the first day out I overheated her, and had to limp back to the marina. In the process we split the rubber muffler
on the wet exhaust
. Probably a combination of a 20+ year old exhaust
, and the overheating
After changing the thermostat, topping up the coolant
, and a stop gap repair on the muffler
, off we went again. This time, before we even got out of the marina, the hydraulic transmission
wouldn't fully engage in forward. Never got more than a knot
or 2 out of her before the tranny started overheating
. Now I knew we were beat, and I just had her towed to our marina where she has been sitting since the end of July.
Since then, I exchanged the blown out rubber muffler with a plastic one and started her up twice. Once I ran her on and off for about an hour to see if the transmission
problem could possibly be just an airlock. There was no pressure guage on the transmission, so I put one on. Sure enough she would drive in forward for a few seconds then I'd loose pressure and poof, no drive forward. I spent the next half an hour running it in forward and reverse, checking the tranny fluid, and when it didn't seem to be getting much better I shut her down, and called it a day. The transmission fluid smelled burnt, so I left it with the intention of replacing the tranny fluid, and giving her another shot in the hopes that this would solve the problem. I know, not likely but it was the cheapest, easiest solution short of pulling the tranny out and getting it rebuilt. (probably where I am going unless someone has another suggestion
Ok, where was I...
Ah yes, since that day, I hadn't run the engine
. Then about a month ago, in preparation of haul out
, I went to start up the engine
, and she laboured quite a bit before catching. When she did, I ran her for maybe 1 to 2 minutes, and something didn't sound right. I shut her down, and went below. The starter solenoid was clicking madly, and I could smell burnt wiring
. I disconnected the battery
, and upon inspection
I found that the signal wire for the starter was pinched between the positive battery
lead and the wood frame around the engine enclosure. End product was that for the 2 minutes that I ran the motor
, the starter was engaging. Result: cooked starter.
Now, I replaced the starter, and was going to give her another shot, and checked the oil
as part of my prestart, and voila! Caffee Mocha oil! First thought, blown head
gasket! I started to drain the oil
, and 2 litres of pure clear water
before I got a drop of oil.
So, how do I get water in the oil??? Blown head gasket
would mean coolant
, not water in the oil. Raw water pump
seal was number 2. Nope, no physical way since if the seal on the raw water pump
was blown, the water would end up pi$$ing out of the shaft seal
into the bilge
, not into the motor
. Third through the heat exchanger
. Nope, coolent is between the exhaust manifold, and the raw water heat exchanger
. Again, I'd have coolent not water in the oil.
The only thing left, is that water is somehow backing up the wet exhaust into the engine through the exhaust port? Does this sound feasible?
I disconnected the muffler, and of course I got raw water
in the bilge
from the full exhaust, but even after 'Sandy' I didn't get any water coming in the bilge through the exhaust pipe from outside.
Now I'm in a quandary. Old boat circa 1970 Perkie 4.236 been flooded with water. (Oil has been changed, but not yet run.) I've pulled the injectors and was advised to crank the engine with the injectors out, (and of course fuel
off) to drive any remaining water out of the cylinders, but before I do, I need to deal with my exhaust issue. Since the only thing I've done to the exhaust is replace the muffler with a plastic one, I figure that must be the problem. I've looked online for anything that even remotely looks like muffler that was on it, and can't find anything. I've attached pics of the original rubber muffler, and the tie in where the raw water connects to the exhaust. I figure its GOT to be the plastic muffler I put on screwing with the flow of water/exhaust to the point that water is backing into the exhaust ports
. I have no idea what to do, or what to replace my antique muffler with. Any suggestions would be appreciated.
Oh, by the way... Haul out
this year has been cancelled due to low water level in Lake Ontario
. She is presently laid up afloat. Boat, 6ft draft
, channel 4ft deep.