Made a new block off plate for the water manifold so as not to hack the old one. If this doesn't work it's a simple bolt on easy to get to. I decided to use the water bypass as the oil cooler water routing, not sure how well this will work. I notice all the Kubota oil coolers route the hot water right back into the block, insuring proper flow throughout the block/waterpump. Using the bypass might compromise some flow through the actual block and route more through the waterpump. I may have to restrict the flow down to the size of the hole in the original (grey/gray) one.
I used a piece of scrap aluminum and an old heater core for the 5/8" elbow. I'm not a great TIG welder. I never remember green or red tungsten and what current direct or AC to use. Just when everything is going along I dip the tungsten right into the puddle and get to start all over again. I just don't weld enough. I do have some nice welding equipment I was fortunate to collect over the years, 3 wire feeds, a spool gun and a nice Miller 180 TIG/arc welder. Metal lathe and milling machine are a must have for any hot rodding.
I want to get this done it keeps snowing and the stuff piles up waiting for me to "git er done".
Fred