Now that we have swung to rebuild rather than replace...let me stress that when you are ready to do a rebuild, do the research
first. As stated in a few posts, sometimes parts
are difficult to find. The reason for this is simple. Manufactures are always upgrading. Approximately 5-7 years. Westerbeke is famous for that. They are basically a marinizing company. They do not build engines. The Westerbeke W46 is a Mitsubishi 4DQ5. That model number is cast on the block.
So no matter what the make of your engine is, check availability of all parts.
Not only crank journals and bearings, but pistons, rings, guides and seal, thermostat housing...the works! Nothing is more frustrating than being $2000 into a rebuild to find that rings are not available.
I'll relate an incident that happened for my rebuild. For a gasket
kit for the engine was $1400 from Westerbeke. I almost s&*t. I called Mitsubishi and they gave me the number of my local distributor. The same gasket
set was $230 from them...big difference. I still had to make a few home made gaskets for the marinizing stuff. Having said that, I heard that Westerbeke does not want the engne manufacturers to sell to a customer with a Westerbeke. You can understand why if they charge triple. Not wanting to test this, I was tight lipped that I had a Westerbeke and not just a 4DQ5.
Remember too...check the heat exchangers. They are also expensive. It seems every time the word marine
is used, you can triple the price
. This is true with so call diesel professionals in the marine trade
. You are way better off finding a engine re-builder (usually automotive) with a machine shop. Most of these guys have rebuilt smaller diesels from the refrigeration
containers (Perkins 4-108). There is no magic to an engine, they're straight forward. Make sure you interview a few builders and see (online) what others are saying about them. My guy did an excellent job but he talked more than worked and the job took 3 times longer than expected. I take part of the blame since some of the parts had to come in from Japan
to my city. My experience was that marine engine builders were charging
close to $100@hr here. The local shops were $50-$60@hr. It's a hassle pulling the engine and getting invovled on the level that I did but I'm a blue collar guy and I liked the experience...after it finally fired up. At least now, I know what I'm doing and can fix most problems with the iron beast.