Onan 8kW heat exchanger relocation
Any of us who have the 1980s Onan diesel generators know just how buried the heat exchanger is buried behind the engine. Because of this, the previous owner didn't bother with it much. At sea trial, seawater was mixing with the coolant, so I knew a replacement was needed. Upon disassembly, I decided there must be a better way to put this thing back together. The zinc is about impossible to reach without removing the starter, exhaust header, and sound enclosure. After visualizing changes to the piping arrangement, I believe the simplest way is to have the heat exchanger upstream from the raw water pump. So, water first passes through the sea strainer, then the heat exchanger, and then on to the pump. My question is: can I do this? Or does the pump have to come first? Any ideas or experiences?