Need water routing held 650 sj

[maskpainter67]

Anyone help out with the factory water plumbing on 1991 superjet 650

I have 1 main water in from pump. 2 water inlets on stock pipe, 1 water inlet on head and one inlet on exhaust manifold. I have one water bypass on the hull

 

[mikidymac]

The main water line on the hull goes to the lower fitting on the pipe almost under the pipe at the rear.
The larger head fitting goes to the pipe fitting with the stainless barb fitting. Basically out of the head straight down to the pipe. This is the hose that you tee off to the bypass out the side of the hull.

The threaded fitting on the pipe is either plugged like from the factory or a flush fitting is installed to flush the cooling system on a garden hose.