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Author Topic: What is best way to put water in M91 radiator  (Read 369 times)

SlowArrow

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Re: What is best way to put water in M91 radiator
« on: August 28, 2019, 11:10:49 am »
I removed the bolt attaching water return line to the top of the cylinder last night.  That gave me access to add water directly to the cylinder jacket and down the return line.  To my surprise, the cylinder was already full of water, and when I started to add water to to the return line, it just overflowed the radiator.  I believe my engine was already full.  When I started the engine and let it run, the first part that began to warm was the return line from the top of the cylinder to the radiator, and then the top of the radiator.  This area of the cooling system warmed before the cylinder head or any other part of the engine.  My cooling system seems to be running as I would expect.

I also removed the cap on the crankcase vent when I ran the engine to allow the crankcase a less restricted vent.
Mike