After getting the engines flushed with Rydlyme, new impellers installed, and new zincs put in, I discovered I had a leak in the polished stainless tube that connects the aftercooler heat exchanger to the coolant heat exchanger on the port side engine. Here's a shot of the tube I pulled off the engine:
Ain't it purdy? The weld on the upper zinc has a small hole in it and you can see it in the close up (it's the little rusty spot on the weld joint):
It looks like a bad weld... the rest of the tube is in great shape and when you look inside, it just looks like they "missed a spot". I'm not sure though... I'm going to take this in and get it welded and keep it as a spare. I ordered a new one and the darn thing was $500! I didn't want to chance the welding thing though. I welded up a hole on an exhaust tube last year and by the end of the summer, the thing turned into swiss cheese...
By pulling that tube off, I got to see the condition of the heat exchangers in the turbo after cooler and coolant side:
Here's the turbo aftercooler:
and here's the coolant heat exchanger:
That Rydlyme does a nice job keeping these things clean on the raw water side. This is a picture of the fuel cooler on the same circuit and it's never been flushed:
That fuel cooler has been replace and you can see that story in my other post.
It's important to keep the raw water circuit in tip top shape...
Just another FYI post.
Ain't it purdy? The weld on the upper zinc has a small hole in it and you can see it in the close up (it's the little rusty spot on the weld joint):
It looks like a bad weld... the rest of the tube is in great shape and when you look inside, it just looks like they "missed a spot". I'm not sure though... I'm going to take this in and get it welded and keep it as a spare. I ordered a new one and the darn thing was $500! I didn't want to chance the welding thing though. I welded up a hole on an exhaust tube last year and by the end of the summer, the thing turned into swiss cheese...
By pulling that tube off, I got to see the condition of the heat exchangers in the turbo after cooler and coolant side:
Here's the turbo aftercooler:
and here's the coolant heat exchanger:
That Rydlyme does a nice job keeping these things clean on the raw water side. This is a picture of the fuel cooler on the same circuit and it's never been flushed:
That fuel cooler has been replace and you can see that story in my other post.
It's important to keep the raw water circuit in tip top shape...
Just another FYI post.