After a long winters rest I am back at it. Got the engine
fired up today and ran perfectly. In checking around running engine
with flashlight I noticed a couple drips, one rather serious from raw water
hose, pump-> heat exchanger
I tried tightening up on the hose clamp but I could tell the leak wasn't going to be fixed like that. Used camera phone
and saw that the leak was slow but persistent, almost looked like it was coming from hose.
Removed HX and put on bench. I can see where a previous owner cranked down on hose clamps and it almost looks like a snake bit. I can feel same thing on inside. Fairly confident this is source of leak. So I wire brush to get it clean and wiped back side of copper braze. There was a "wet spot". I waited 5 minutes and I could see moisture wicking back up to surface.
In the interest of time I'd like to attempt a repair. I have an oxy acetylene rig, although mainly for rosebud work
. The inlet is either brazed or soldered to the outer shell. Wondering what you think would be appropriate material for this? I have 50/50 lead tin Kester, silicone bronze
rod, silver solder.
My most immediate concern is repairing the "snake bite" but I suspect the inlet to shell joint is also not great and since I'll be applying a fair amount of heat to it, might as well be prepared to fix that too. A new HX is around $500 and I am unsure about delivery
goes in water
in 2 weeks.