There is a post and a person you should talk to on this forum.
Saltyhog is the person, and appears to be online now. This is from another thread:
I know the thread is old, but I thought I'd add something that I hope will help you (and other Westebeke owners) in the future. I noticed in the pics of your W46, you have the older 3 piece exhaust manifold. This was an idea they had to permit
using an extrusion for the manifold that could be cut to different lengths depending on the engine
/ number of cylinders. The caps on the end, along with their seal, keep the coolant
in the jacket separate from exhaust. The problem is if that seal begins to leak, you'll get coolant into the exhaust, and eventually in the cylinder. This usually occurs in number 4 cylinder, as the engine
tilts that way. Westerbeke
corrected this with a later version of the manifold that is a one piece casting. You may want to keep an eye on that manifold / seal. The only way to check is to remove the end piece and at that point, you might as well replace the gasket
. I learned of all this from a diesel mechanic
who taught the marine diesel
class I took. BTW, I guess you figured out what a PITA is is to drain the block of coolant. You have to remove the starter to get to the block drain plug
. I keep hoping someone will enlighten me with an easier way, but so far nothing.