first off welcome to the cummins family... second the difference between the 12 valves and 24 valves is that the 12 valves are all mechanical from mechanical lift pumps to mechanical injection pumps so on and so forth..... the 24 valves use electric lift pumps and stuff like that.... and finally things to loo for in a 98.5-02 cummins is if you buy one buy a fuel pressure guage asap and do not let your fuel psi to get under 5 psi or you'll most likely be replacing your injection pump shortly which isnt cheap..... anywyas i'm sure more people will tell ya what else to look out for also
-
May's Cummins of the Month is now open for VOTING!
1 - 20 of 23 Posts
VERY cheap to make power. Lift pump should be upgraded if it doesn't have the in tank pump (don't seek out a pos intank pump)
The Cummins engine can support MASSIVE power without getting into the engine, and pretty good power with cheap mods (like mine!
) NO MORE PULLING THE CAB for injectors/valve covers! ONLY synthetic in the new venture six speed, and get an extra quart in it. The 5 speed nv might have the 5th gear walk off the shaft from the nut walking off. You MUST have a steering stabilizer, and it SHOULD be between the axle and the draglink. (Some were from the frame to the draglink and this may have "death wobble" show up)
Don't let me talk you out of it, though. I knew these problems and bought mine! Otherwise good solid trucks. The six speed is close enough ratio to be a pain to drive, but VERY stout. There are two versions; The older has a 1.25" input shaft, the newer has a 1.375" input shaft, larger clutch and pilot bearing. It can be identified by a (1.5"?) spacer between the starter and the bell.
Dodge Ram Information is a great site to cruise around on with VERY reputable information.
The Cummins engine can support MASSIVE power without getting into the engine, and pretty good power with cheap mods (like mine!
) NO MORE PULLING THE CAB for injectors/valve covers! ONLY synthetic in the new venture six speed, and get an extra quart in it. The 5 speed nv might have the 5th gear walk off the shaft from the nut walking off. You MUST have a steering stabilizer, and it SHOULD be between the axle and the draglink. (Some were from the frame to the draglink and this may have "death wobble" show up)Don't let me talk you out of it, though. I knew these problems and bought mine! Otherwise good solid trucks. The six speed is close enough ratio to be a pain to drive, but VERY stout. There are two versions; The older has a 1.25" input shaft, the newer has a 1.375" input shaft, larger clutch and pilot bearing. It can be identified by a (1.5"?) spacer between the starter and the bell.
Dodge Ram Information is a great site to cruise around on with VERY reputable information.
the electrical connections changed on the 06-07. In 2005 the torque was bumped up to 610 and some of them had plastic intercooler tanks and they changed the valve bodies in the transmissions in that year too...I think...The 04.5+ have a larger compressor on the turbo, a third injection event, some minor air flow improvements in the head, a 4" TBE and a cat to boot....
Yeah they went to the CAN ECU vs the ??? (can't recall)...
The 04.5+ have a larger compressor on the turbo, a third injection event, some minor air flow improvements in the head, a 4" TBE and a cat to boot....
Also the 6 speed manual changed in 05 as well. I have a 05 with plastic end caps and a NV5600....
1 - 20 of 23 Posts
