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bob h
Joined: 15 Oct 2006
Posts: 675
Location: Nb
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| Posted: Sun Oct 15, 2006 6:34 pm Post subject: |
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| I agree with the compressor inlet hose theory for the power concern. The crankcase blow-by is measurable, take it to a competent service facility and have them do a blow-by test with a manometer. |
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9200IH
Joined: 27 Jan 2006
Posts: 154
Location: Mid Michigan
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| Posted: Sun Oct 15, 2006 6:57 pm Post subject: |
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Roadranger S60 Detroits are not suppose to go below 1050rpms per engine owners manual. Sounds like you are trying to drive the DD like a Cat. Detroits like 1400/1500 and up to 1700 for a shift point. But if you shift at 1500 you will get better fuel milage.
I have a 430 hp DD pulling 49,000lbs I get 8.475mpg @ 57 mph IH 9200 3:90 |
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roadranger
Joined: 03 Sep 2005
Posts: 246
Location: Junction of MA CT RI (Putnam CT)
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| Posted: Fri Oct 27, 2006 8:11 pm Post subject: |
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stranger wrote: Check the rubber hose from the compressor to the intake.
Thanks, didn't know the compressor got it's air from after the turbo. :shock: |
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roadranger
Joined: 03 Sep 2005
Posts: 246
Location: Junction of MA CT RI (Putnam CT)
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| Posted: Fri Oct 27, 2006 8:26 pm Post subject: |
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9200IH wrote: Roadranger - S60 Detroits are not suppose to go below 1050rpms per engine owners manual. Sounds like you are trying to drive the DD like a Cat. Detroits like 1400/1500 and up to 1700 for a shift point. But if you shift at 1500 you will get better fuel milage.
I have a 430 hp DD pulling 49,000lbs I get 8.475mpg @ 57 mph IH 9200 3:90
I do miss my 3406E Cat :sad: ! If I was to shift this crappy DD whole gears at 1500 I'd bog out! :shock: ! I have to go to 1700 for whole gears and 1600 for splits to keep it from loosing power after the upshift. Another truck we have has a 470hp DD that doesn't have any problem developing torque down at 1100. Without the 13 speed this truck would be almost undriveable. To bad, it is a 2000 Intl Eagle 70" sleeper but has had many problems, some fixed and some still there. Just had the kingpins done. Really needs a overhaul to get rid of the blowby, a new steering box, a new seat, fix the incredibly loud wind whistles on it (can't run with the windows down :shock: ), and it is still too big for the city deliveries we do (rarely run overnight) . If it wasn't so F'd up we'd sell it. Well, I've got to spoon some new drives on the truck we just registered tomorrow - a 1995 FLD120 41" sleeper with 11.1 liter DD 325/350 9-speed that seems to pull better than the 430/500 hp DD in the Intl :shock: . |
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SteveBooth
Joined: 18 May 2005
Posts: 3501
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| Posted: Mon Oct 30, 2006 2:11 am Post subject: |
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I was in a truck stop this weekend talking to a guy with a Detroit Series 60 and he showed me his truck and he had a hose connected to the blow-by pipe under the engine and went into the exhaust stack.
Is this normal and OK to do this? |
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bob h
Joined: 15 Oct 2006
Posts: 675
Location: Nb
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| Posted: Mon Oct 30, 2006 6:38 am Post subject: |
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SteveBooth wrote: I was in a truck stop this weekend talking to a guy with a Detroit Series 60 and he showed me his truck and he had a hose connected to the blow-by pipe under the engine and went into the exhaust stack.
Why would he do that :(
...I mean, what purpose could that possibly serve?
[/quote]Is this normal and OK to do this? [/quote]
No. |
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SteveBooth
Joined: 18 May 2005
Posts: 3501
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| Posted: Mon Oct 30, 2006 6:47 am Post subject: |
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| He did it so the smoke or steam wasn't coming out from under his truck and instead coming out the stack. I sort of thought that was obvious. |
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bob h
Joined: 15 Oct 2006
Posts: 675
Location: Nb
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| Posted: Mon Oct 30, 2006 7:09 am Post subject: |
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SteveBooth wrote: He did it so the smoke or steam wasn't coming out from under his truck and instead coming out the stack. I sort of thought that was obvious.
It is normal for a certain amount of crankcase gases (smoke, steam, whatever you want to call it) to come out of the breather tube. This problem is part of the '07 emissions for on-highway diesels, the '07 engines have a closed crankcase (no venting fumes).
If the gases are excessive... repair the problem. Actually, what he has done with the breather tube may actually compound the problem.
Under high exhaust flow, his crankcase will be under a high vaccuum :(
What SEEMS like a good repair... isn't always. |
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