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#11
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That said, I don't rebuild turbo's. I have a shop that does that. But that doesn't mean I don't know how they are assembled and work. I agree, I don't like the drain either.... and it may in fact be the source of the oil (although I don't think it is).... but it isn't the "no boost" issue. I know you also agree with that. |
#12
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I never see clogged drains on stock trucks, it's the do-it-yourselfer's installing aftermarket components that end up with an oily intercooler pipe. Actually it's very rare that we get a stock truck in the shop. Another thought I had, that mandrel bent tubing always has oil in the piping, maybe that's what OP's seeing?
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#13
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I've got one of Mike's kits on my 782D. It's a great kit, very complete and Mike is good to deal with. The 782D will make about 6 pounds of boost pulling a loaded cart up the shallow grade on my property. There are no traces of oil in the air tubing. My drain line is routed similar to yours but by using careful routing I got it to slope downhill all the way to the fuel pump block-off plate where it drains into the sump. I would check the waste gate carefully to make sure it seals against the body of the turbo. The kit uses a spring to keep the "door" closed instead of the actuator that would be there in the normal application. Most likely there is something under the door allowing no boost. I'm sure Mike and the rest of us can help you thru this. The Kubotas are a great little engine and a lot of fun at the shows when they have a turbo on them.
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149, 2072, Original, 1772, 1782, #1 cart, Parker 48" sweeper, |
#14
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Thanks again for your response. Due to my work schedule I haven't had a chance to work on the tractor. I plan on working on it tomorrow. Lets assume the oil return line needs to be at a steeper decline and that is why the oil is getting into the charge pipe. Will the seals in the turbo need to be replaced now? Or if I correct the return line to have oil flowing probably will the turbo with begin to make boost? |
#15
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#16
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Yes the spring is as it was shipped from Mike.
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149, 2072, Original, 1772, 1782, #1 cart, Parker 48" sweeper, |
#17
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Once more, the drain isn't the boost issue. The oil leak isn't the boost issue, unless the turbine is bound and not spinning properly and also leaking oil. I've seen turbos puke oil but still boost. As a note, I've bought several things from Mike. He's a good guy and easy to deal with. If the turbo was/is defective out of the box, I'm sure he will make it right. |
#18
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What range is the boost gauge? You shouldn't use and more than a 15 psi. If you have a bigger one it is not as sensitive and doesn't move much. I use a 15 psi one and it makes 3 psi on the driveway full rpm and hit the hydro it will make more with a load on it. The oil is left over from shipping I primed the bearing so it would not start up dry. I would take the exhaust flange off and remove the spring on the waste gate and make sure it is closing all the way.
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