James, thanks for the reply and yes I know about the block plugs. The concern is that if there are any bellies in the water passages so that all the water is not drained there might be a problem. I'm not saying there are low spots but I just don't know. Plus there are the anticorrosion properties of the antifreeze.
Winterizing a Universal 5411 Diesel
- Thread starter Ajay73
- Start date
These are first industrial or tractor engines. They are designed with the thinking the engines will be level and the drains are placed as such. In a sailboat with shaft drive these engines are far from level and can become water traps. Also sucking in antifreeze, the right kind with corrosion inhibitors, helps prevents slab rust from forming in the narrow cooling passages..
So on RWC engines remove t-stat, replace t-stat housing and suck in the AF. It helps ensure the AF gets into the block if you pinch off the bypass hose thus forcing the AF into the block and not directly out the wet exhaust.
What if you removed the seawater intake hose from the seacock and the impeller, and blew air through? Wouldn't the air push all water out of the system eliminating the need for the pink antifreeze?
Lee
S/V Adagio
Lee
S/V Adagio
I just bought an '82 Catalina 27 with a 5411 diesel and am working on figuring the engine out. Luckily I don't have to worry about winterizing here in Santa Cruz. There is a valve in the return cooling line from the thermostat to the raw water intake. The valve is closed. I do get some water out the exhaust, so either there's no thermostat installed, or there's leakage around it to the exhaust. It seems like that's a bad idea to have it closed, or is there some good reason for keeping it closed?
The temperature gauge doesn't seem to work (or maybe the engine is always running cold?), which is on my list of troubleshooting projects (in addition to the wiring harness and the throttle control, topics for a new post).
Rob
Santa Cruz
The temperature gauge doesn't seem to work (or maybe the engine is always running cold?), which is on my list of troubleshooting projects (in addition to the wiring harness and the throttle control, topics for a new post).
Rob
Santa Cruz