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Old 06-01-2006, 12:40 PM   #1
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I have no idea whether or not this is the correct forum for this, but I've been trying to find somewhere that would give a timetable for the new engines, and the net effect.

I'm considering ordering a new Newmar KSDP, and am trying to figure out how hard to push it. Any idea of when Newmar will switch over to the new engines?
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Old 06-01-2006, 12:40 PM   #2
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I have no idea whether or not this is the correct forum for this, but I've been trying to find somewhere that would give a timetable for the new engines, and the net effect.

I'm considering ordering a new Newmar KSDP, and am trying to figure out how hard to push it. Any idea of when Newmar will switch over to the new engines?
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Old 06-01-2006, 03:59 PM   #3
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My understanding is that Cummins may start the newer engine format as early as September to get the process rolling. That is not to say that all engines going forward would conform to the new stanards. As of January '07 I believe they will be built to the new specifications complying to the EPA standards as required.
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Old 06-02-2006, 04:47 AM   #4
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And what's the upside or downside to the new engines? (i.e. Should I wait or order soon?)

I vaguely remember, from some thread, that the mileage would be lowered, as would the horsepower. Did I remember that correctly, and is there anything else? Will it make a significant difference in the emissions?
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Old 06-02-2006, 09:21 AM   #5
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Well one downer might be the muffler size and weight. It is reported that the muffler is about three times the size of current units and weighs about 140 lbs. Hotter running engines seem also to be required to properly burn off the fuel properies.
So,
* Possible lower milage
* Possible hotter running
* Less basement storage by need for more muffler space
* Needs ultra low diesel fuel currently not sold everywhere.

I'm sure they will get many of these issues addressed and reduce the down side somewhat.
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Old 07-01-2006, 09:47 AM   #6
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Most manufacturers will add a DPF (Diesel Particulate Filter) into the exhaust system. I'm not sure if it is in addition to the muffler or instead of - but it is more restrictive and will most likely raise the EGT. Cat is bumping the displacement of the C9 up to 9.2 liters and adding a little more hp and torque for 2007 (I think for this very reason). All newer diesel engines 'should' run on the new ULSD fuel just fine and I would not hesitate to jump on a unit with an '06 engine. mp
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Old 07-01-2006, 11:24 AM   #7
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As posted earlier,Cummins won't even begin to produce the "newer" version until September so anything you buy until then with a Cummins engine is fine.
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