How many miles before diesel rebuild - Dodge Cummins Diesel Forum

94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 
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post #1 of 10 (permalink) Old 01-22-2009, 12:18 PM Thread Starter
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How many miles before diesel rebuild


How many miles can you expect to get out of a 12 valve before a rebuild? How about a 24 valve?
Do you re-sleeve the cylinders or just rings?
Does the Head usually need rebuilt before the bottom end?

My buddy is looking at a 95 12 valve with 240k miles and automatic.


2000 QC 2500 4WD: Straight pipe, intake, Red Top Optima's, 160k miles

Last edited by adb426; 01-22-2009 at 12:37 PM.
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post #2 of 10 (permalink) Old 01-22-2009, 01:08 PM
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Cummins says 300k before rebuilding but I've heard of some 12s going over a million without the head coming off.
Never heard of a 24 valve going even half that before going to the junkyard

Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Stock for one day

Last edited by illflem; 01-22-2009 at 05:45 PM.
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post #3 of 10 (permalink) Old 01-22-2009, 01:11 PM
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I have 245,XXX miles on mine, runs just as well as my grandpas and he only has 63,XXX on his 01. The need for a rebuild is directly perportional to how well it was taken care of. Ask the owner for service records. Now that tranny is a different story

Broken left wing......
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post #4 of 10 (permalink) Old 01-22-2009, 05:09 PM
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you got how well its taken care of os how long it will last you

94 Dodge 1500 2wd powered by a 2005 Cummins 3.9 4BTAA 27mpg 95 Dodge 2500 4x4 boost elbow (35psi) #10 fuel plate 99 2500 4x4 edge juice with attitude. 01 f650 with 5.9 cummins. 06 2500 all stock for now http://www.cumminsforum.com/forum/cu...ics-truck.html
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post #5 of 10 (permalink) Old 01-22-2009, 06:59 PM
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From Ram Diesel Index

Cummins data indicates that the life of the B engine in a medium duty truck is slightly over 300,000 miles. Estimated engine life in the pickup is unknown because few engines have failed or worn out, and there are numerous reports of over 800,000 miles.

'96 2500, CTD, 4X4 flatbed, Isspro gauges, Skyjacker D-25's, ThurenFab track bar, DSS, HD steering.
Motor; BHAF, #100 fuel plate, 5X.012 90hp injectors, Pacbrake 4kGSK, Loose starwheel. 306hp/743tq before injectors.
Exhaust; Schwitzer S300G, 4" downpipe, single 5" turnout stack.
Trans; Dunrite VB/TC, Intelligent Engineering billet input shaft, Burt Brown rebuild/upgrade.
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post #6 of 10 (permalink) Old 01-22-2009, 07:47 PM
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For what it's worth I just picked up a 96 12 valve with 294,000 on it and there is no blowby out of the oil fill.

1977 F-250 12v 5.9
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post #7 of 10 (permalink) Old 01-22-2009, 08:44 PM
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I've seen no less that a dozen 24 valves with more than a million miles used to haul RV's. The one thing they have in commons is very few or no performance mods. We have one at my RV dealership with over 800,000 hard miles and still going strong.

2000 3500 4x4, auto 4.10,BHAF, 4" MBRP, Power Puck, Converted to SRW, Dual Walbro 392's w/2 mic Cat filter, DiPricol FP, PSC DSS, billet trans

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post #8 of 10 (permalink) Old 01-22-2009, 10:04 PM
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i know of a guy who has a 1st gen 12v and he has over 600,000 miles on it and its used as a farm truck and it gets beat and he hasnt had a problem with it. now thats stock, once you get into injectors and stuff heat could ruin an engine quick

95 dodge ram 2500, ext. cab, long bed. stacks, lift and 35's
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post #9 of 10 (permalink) Old 01-22-2009, 10:48 PM
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Well we got a guy that does hauling nation wide and on his 98 he has over 800000 miles now and my papi had 776000 last time i saw it and yes these were 3500 and a 2500 so yes they will go a long time just depends on what ya do with them

2008 2500 4x4 6.7 auto, all deletes,S&B intake, 5" TBE exhaust, smarty jr/me,Edge Insight, LE 15/40 monolec ultra 8800 Thanks to Brad Caires at Blackhawk Diesel 435-496-3435
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post #10 of 10 (permalink) Old 01-22-2009, 11:14 PM Thread Starter
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Thank you all very much for the response!
Engine life is determined by maintenance and good care but when you buy a used truck, you can only start treating it to the best and hope for the best.
It is great to hear some real world numbers and it sounds like 250K isnt the end of the world as long as it is well cared for.
I bought an 02 new, never let anyone change the oil or anything. I had new pumps at 65K under warrenty but I actually spoke with the mechanics and chose the dealer before letting anyone touch my truck. Unfortunatly, I had to sell that one but now, I have a 160K "used by someone else" truck. This one has some mods and who knows how they maintained it, so I am a bit worried. And now my buddy is looking at a 250K truck so I thought this was a good time to ask the question.
It is good to know that it is really true these can last for a million miles.

2000 QC 2500 4WD: Straight pipe, intake, Red Top Optima's, 160k miles
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