So some good news...... actually great news!!!! I stopped by a local tractor/equipment dealer today. They used to be a john deere farm equipment dealer but was dropped by john deere a few years ago unfortunately. Anyway, I just wanted to see if maybe they had some parts or serviced injectors. Even better they had a set of injectors on the shelf ready to go. Original oem serviced injectors apparently a customer ordered and never picked them up. They sold them to me for three bills and told me if I had any problems to let them know. This was awesome! Of course it sucked I had to buy injectors but a got a pretty good deal I think anyway.
Got home and tested them out quick and sure enough all three are perfect. They actually spray better than my originals that I tried to clean. So they are all installed in the engine and ready to go. All I need to do to is run some fuel lines, a few temporary wires for the fuel pump, bleed the fuel system and it is ready to test fire! Hopefully I can do that this weekend.
Another good thing is I believe I can run a front pto.... but I need a bit more room in front. I got a electric pto from Amazon to see if it could be done and I think I can. So what I'll need to do is ditch the factory oil cooler. If I do that, I'll have the needed room for the electric clutch.
I'll have to design a stub shaft to bolt to the front pulley right off the crankshaft. It should be plenty strong to do so as the journals are a lot bigger than the Onan and the pulley is kind of press fit over the end of the crankshaft. The stub shaft will allow me to slide the electric clutch on with the pulley towards the engine which basically drops the belt down in the oem location. Then I'll just have to make a anti rotation bracket.
Now for the oil cooler, I think I'm gonna go one of two ways here. It is definitely gonna be a fluid to fluid cooler using the engine coolant. I'll either run a tube style cooler or a plate cooler. I think I have room above the engine off to either side of the valve cover. I'm gonna try to keep it over on the injection pump side, but I'm afraid I may have to run it above the exhaust manifold and make some heat shields. The other option is to mount it outside of the engine compartment on either side of the engine.
A tube style cooler is basically one big tube (2" to 4" in diameter) with a bunch of little tubes inside. The coolant would run through the main shell and the hydraulic oil would run through the little tubes. I've seen these that would flow upwards of 20gpm so it should work no problem.
The other style is a plate style cooler. It is basically a cube with alternating plates that run each fluid past each other in different plates. These coolers are actually extremely efficient and are used in tons of applications today. My F-250 6.0 powerstroke uses one for the engine oil and it isn't very big at all. Maybe 6"x6"x4". It keeps oil temps within 5 to 10 degrees (higher) of coolant temps almost all the time.
I'm really leaning towards the plate style at the moment. My only concern with these are temperature. I've done a lot of searching on the forum and it seems that most are saying really working a Case like tilling or equivalent use of rear pto, the hydraulic system is running upwards of 200°. So maybe I'm over thinking it. If the oil cooler and my little radiator can keep the coolant temps around 160° to 200° I'd guess I probably would be ok. Guess I'm gonna find out because adding a front pto back would actually be really nice.
I wasn't initially even concerned about a front pto but the more I think about it, the more excited I get to keep this feature. Mowing the lawn with a diesel swap would be awesome considering the fuel consumption alone. My '88 446 is a absolute gas guzzler.