what year did they stop putting the 24 valve cummins in the dodges? what would be a better, more reliable, and more powerful engine a 24 valve or the 12 valve?

 

12v to 24v was midway through 1998, 24v isb to 24v common rail was in 2003. You can build massive amounts of torque from the old 12v. Their injection pumps are a little more robust. How ever fuel mileage is lower with the 12v. The 24v's are electronic, so if you want more power, all you need is a chip. As for which is better, I have no opinion. I like the old 12v's because of no electronics. I like the new 24v's because of fuel mileage and the transmissions offered behind them.

 

They started putting the 24v in the 98.5 year model. The 12v is more mechanical (such as the injector pump), the 24v is more computer controled.

 

which one has more h.p.? the 12 valve or the 24 valve?

 

The 24 has more power than the 12, My buddy has a 12 and mine spanked him stock.

 

but i thought that the brand new cummins were 12v?

 

They are still 24 valves. just use a common rail to feed the injectors

 

89-98.4 were 12valves, 98.5-present are 24valve

there was an injector pump change in 94
head redesign and injector pump change in 98.5
injection system and a slight block redesign in 03
in 07.5 the 5.9L ISBe will be dropped all together for the 6.7L. I;m unsure of the designation of the engine right now.