first step is remove the heads and clean out the bores fill em with diesel and let it soak for a while. get a bit of pine and a club hammer and give each piston one sharp rap using the timber as a drift. and top up the diesel. if it has just stuck from rain it probably only one or 2 cylinders affected.

I see that you are in eastern Washington, if you call Kroll machine in Colfax Wa they can set you up with the direct electric conversion. They have the templates and the parts and have been converting pony motor cats for decades. 509-397-4666.

you would be surprised what a cleanup with a hone and fitting new rings will do provided it hasnt pitted the bore.

I have a D6 9U that has a turbocharger on it---i think it was added--can i just remove it and plug any lines to it and run it like that??

my guess is if turbocharger still has any moving parts, impellers, cartridge, etc....NO !

-why not just repair/replace turbocharger?

well you would have to make pipework to connect the exhaust and intake back up again, reset the injection metering so it gets the correct amount of fuel for non turbo. connect the oil and coolant lines so they could just recirculate. it would be easier to replace the turbo if its faulty.

Ed Miller of Miller Track in Modesto back in the mid 80 was promoting tubo's for 8 &9 u D6's. I did not have money to even think about it, so may not have listened, or remembered as good as I could of. But I don't remember anything about turning the fuel up. Just get more out of what you where burning.

It was take them your existing exhaust manifold, and they had a modified pipe made to fit. A unbolt, replace and go, a real do it yourself thing. But different folks have different ways.

this add on turbo was a real butcher job on the hood and sheet meta;--looks terrible---and i have a spare 9U engine with all the parts i need to make it decent looking

The D318 turbo is made by Schwitzer - part numbers 131277 (also 4-350).
The Center Housing Rotating Assembly (CHRA) for this turbo is part number 140089 (discontinued).
The Service Kit (aka rebuild kit) for this turbo is part number 182038 (discontinued).

If a D318 turbo goes bad, depending on the damage - a turbo shop may or may not be able to overhaul. Repair parts require custom machining. The best option is probably to simply adapt an aftermarket turbo.

Quite irritating there's no parts support, considering Schwitzer is still in the business of manufacturing turbos.