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12 valve

  1. 89-93 Non-Powertrain
    So I had a 1991 Dodge W250 come into my possession. It's a single cab long bed with a blue and silver 2 tone. It has a 173000 miles and It's all original. I ended up selling my 2010 Jeep Wrangler JK because I didn't see the need for a gas and diesel guzzler. I'm in the military and I'm coming...
  2. 94-98 Powertrain
    Installed a nice billet aluminum tappet cover because I was leaking out of the gasket, decided to go big or go home and buy a high quality cover. I’ve recently started running more boost and fuel. I am leaking out of the vents in the tappet cover. What would be causing this? Could I make some...
  3. 94-98 Non-Powertrain
    I have a 1995 2500 12 valve, I pulled the truck out of the garage to wash it, went to start it up after that and it wouldn’t crank over. I have replaced the fuel **** off solenoid relay and the solenoid clicks on when I turn the key. I replaced the neutral safety switch also. I had the starter...
  4. 89-93 Powertrain
    So I have an 89 cummins and I bought it knowing it needed some love. Had a slight knock, not very hard, but noticeable. Also had a white has and when you gave it some, it blew white smoke. So I changed the injectors to ducky fuel injection 5x.012. Well the knock did not go away and neither did...
  5. 94-98 Non-Powertrain
    Flushing the coolant in my 1998 ram 2500 12 valve. I put green coolant in because that’s what we use at the shop (for cars and light pickup trucks). My buddy said your not supposed to use green coolant in deisel engines, what is the recommended coolant? Thanks
  6. Cummins Conversions, Shop Talk, Tools, Fabrication
    Okay so i have a 89 dodge w250 4x4 with a 318 and a727 tranny. Im getting a 90 d250 with a cummins and a blown auto tranny but it comes with a 5 speed getrag. Im just gunna rock it as a 2wd untill i can get a 23 spline transfer case. Im going to do the cummins swap and i am also wanting to...
  7. 94-98 Powertrain
    My truck started smoking white and popping, checked the timing and the timing was retarded by around 6 degrees from stock. I had 3 degrees advanced before. What would cause this to slip? I only drove it about 3 miles after I advanced it and it started smoking and popping. I am going to re time...
  8. 94-98 Powertrain
    looking to get either AFC Live or the Attitude Adjuster. I hear mixed things about both like AFC live controls wont stay for a long period of time. I just want some decent power and to smoke (yeah i know all the smoke haters will be on my ass but im 18 and i like smoke. Im still a kid just let...
  9. 89-93 Non-Powertrain
    I’m going to look at a 12 valve with low miles but it has an automatic gauge cluster with a 5 speed. Is there a way I can tell on the vin if the truck was born an automatic or born a manual, I’m worried it has had a low mileage gauge cluster out of an automatic put in it. Owner claims it was an...
  10. 94-98 Powertrain
    Morning everyone. I wanted to get some advice on a miss I’m having. I recently purchased a 95 2500. It was an old farm truck. The PO didn’t do a great job at maintaining it so I’ve been going through it. I’ve been chasing down a miss and I think I’ve narrowed it down. First, there is almost no...
  11. New England
    Hey everyone, I’m new here and I have a couple of cummins, I have this 1993, a 2003 and a 2005. I have seen a lot of 1990s trucks similar to this one go for some pretty large sums of money and am not really sure how to price it for sale. I’ve seen many in the 10-15,000 range, and I’ve seen a...
  12. 89-93 Powertrain
    Hey all, sorry for all the questions, i just want this truck to be restored to the best of my ability. Posted below is a video of my 1991 w250 right after I started it cold. A rough idle can be heard & im unsure of this is normal or what where to start on troubleshooting this potential issue...
  13. 94-98 Non-Powertrain
    Howdy, I have just recently bought a 12 valve Cummins (I'm 16 and this is my first truck I drive my grandpas 7.3 so I'm really clueless when it comes to the Cummins Engine, I am a huge 7.3 Powerstroke fan but that's besides the point) It doesn't have a working fuel gauge and my refuel light is...
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    00T0T_3kJrQeZOvBC_07K03A_600x450.jpg

    1997 nv4400 2500 sport 4x4
  15. 94-98 Performance Parts Discussion
    How is everyone doing, My name is Colin! I have a 1996 12 valve cummins! I am very new at building cummins! i am trying to create a build list! Possibly ready for new injectors! 4” Straight pipe (Not opposed to changing to 5”) Heres what I have so far, my goal is 700-800 HP 1996 12 Valve...
  16. 94-98 Non-Powertrain
    So I have a 97 12 Valve, and my coolant temp gauge has been fluctuating bad. Idling it’ll sit at 180-190 and then when you get on the throttle it shoots to 230+ and let off the throttle it goes back to 180-190. I’ve replaced the thermostat, thinking maybe it’s the coolant temp sensor? How often...
  17. 94-98 Powertrain
    Hello Cummins guys! I’ve been having trouble with my 97 12 valve Idling. On a warm summer day, It idles at about 800 Rpm in P and N, it drops to about 750 when in D. If I drive it hard on the highway for a few minutes, especially if I hammer on the throttle a few times getting on the highway or...
  18. 94-98 Powertrain
    So I've searched and searched for info on this and no one had a straight answer. So I went ahead an did this swap in Hope's it would work. My 12v 47re took a s*** and I had a friend with a 01 24v stage 4 ATS. (Hate all you want, I paid 1200 bucks with a core) so after installing it we found out...
  19. 94-98 Powertrain
    So I bought my first diesel, a 1994 12 valve 4x4 today. I'm wondering what the best additives to use for fuel mileage are? I know that 2 stroke oil helps, but how much per tank, and does it matter if it's premium or not? Grateful for any help, thanks.
  20. 94-98 Powertrain
    I recently purchased a '94 12V with about 200k miles- it ran great up until last week. I went to start it and it had a rough idle, drove it down the street and it was puking white smoke, popping and had no power. Got it back and realized a copper line (that i think goes to the fuel pressure...
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