Originally Posted by catalinajack
Guess I was lucky when I replaced the exchangers on my Lehman 120s. The ones I got had two threaded ports on the bottom, one of which is used to supply the stuffing boxes. The anodes are on top.
I think this spring will add some changes by silver brazing on some fittings.
I had to repair these years ago by brazing when I got the boat, so I know all about them. Anode on top is fine, what I really want is an improved draining method. My repair was for cracked tubes. May have been caused by freezing when owned by PO.
They are made by Sendure.
I have underwater exhaust, so I rigged a tell tale coming off the engine-trans heat exchanger out the back of the boat with a 1/4" tube.
So I suppose that tube could connect on the main heat exchanger instead, or even be combined into the other heat exchanger to drain both together.
I should turn the drain of the engine-trans heat exchanger into the tell tale tubing. I had done it another way.
Does anyone think a 1/4 inch tube is sufficient for a drain ?