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1998 4bt Cummins Swap

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Old Mar 5, 2013 | 04:25 PM
  #281  
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Originally Posted by crazzywolfie
would you complain about that type of power if you could still get 27mpg if you wanted
I must not have seen the latest and greatest on project rust bucket, but there still isn't any chance of even pulling 20 mpg on Prince of Darkness injectors and big laggy chargers that made the final whp...
 
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Old Mar 5, 2013 | 04:47 PM
  #282  
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i guess that is why he used Scheid Diesel 5x25 injectors.
http://www.dieselpowermag.com/featur..._d250_cummins/
 
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Old Mar 11, 2013 | 08:55 PM
  #283  
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Ah. I see you are still douching out over the VE 6bt. Fact of the matter is, the 4bt is nearly identical to the 5.9, minus the two rear cylinders. With same modifications and tuning it will produce 66% of the hp/tq.

I still don't understand why some people don't understand the difference between real world mileage, and mileage figured on a trip to "figure mileage". And the scheids injectors they used from your link are still wildly larger than PODs, which I don't see producing nearly the same efficiency even with a better pray pattern.

Have a good week.

Jake
 
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Old Mar 30, 2013 | 09:33 PM
  #284  
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Okay, I finally got a decent highway trip on the truck since the swap. Trip was mostly 70mph on the interstate with some traffic in Minneapolis. Not completely done tweaking the pump, but pretty happy with it as is

234.4 miles and topped off with 10.03 gallons= 23.37mpg
 
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Old Mar 31, 2013 | 02:06 AM
  #285  
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Hmm. That's pretty disappointing. I get 18-19 with mixed city/freeway driving in my 7000lb lifted truck on 35's, twin turbo's, and lots of fuel on tap.
 
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Old Mar 31, 2013 | 11:31 AM
  #286  
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Am I the one off here? I am closing in on 24mpg at 70mph in a 6,000lb leveled truck.

Which is still 5mpg better than your truck? and 10mpg better than my previous 360?
 
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Old Mar 31, 2013 | 11:50 AM
  #287  
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I was just saying I would expect better from less motor, less weight, and less aerodynamic drag. Guys get 25+ out of the 2wd 1st gens and close to 25 with 3rd gens, so I bet with tuning you will be able to get a lot more out of it.
 
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Old Mar 31, 2013 | 01:57 PM
  #288  
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Heck, I think that is pretty good mileage myself. Better than the 10mpg I get in my ram!
 
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Old Mar 31, 2013 | 02:04 PM
  #289  
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I'd be pretty happy with that kind of mileage too.
 
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Old Apr 1, 2013 | 05:27 PM
  #290  
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Originally Posted by Wombat Ranger
I was just saying I would expect better from less motor, less weight, and less aerodynamic drag. Guys get 25+ out of the 2wd 1st gens and close to 25 with 3rd gens, so I bet with tuning you will be able to get a lot more out of it.
Originally Posted by LegendKiller89

Heck, I think that is pretty good mileage myself. Better than the 10mpg I get in my ram!
Originally Posted by Blue Mopar01
I'd be pretty happy with that kind of mileage too.
Well I'm 4x4, not done tuning, and don't have the intercooler on yet so I am still happy with my numbers thus far...

With any luck I might be able to make some progress with my air upgrades by next week
 
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