Why is it that you can't simply connect the red square nipple with a hose coming from the green circled pipe nipple (near clamp 20)?
I could do that, but in my opinion that would not be the simplest approach.
Why would i connect the two points together when i want to cancel the whole arrangement.
And the water that gets looped through the system is not cooling cylinder # 4 either.
So in my opinion this is the best solution, atleast for me
:-p