Recent content by The Tow Rat

  1. The Tow Rat

    Cummins 12V vs 24V... what do people think?

    Oh sorry crash68, I didn't read your post carefully enough. Hmm your point about excess air reducing EGT and thereby reducing NOx add up for sure, and makes a lot of sense.
  2. The Tow Rat

    Cummins 12V vs 24V... what do people think?

    Thanks chri5k, Sure that makes a lot of sense. I would imagine injection timing, multi-shot, and also improved injectors with finer atomization would all potentially benefit emissions. Maybe the higher injection pressure on the common rail setup even helps too. Maybe even the central injector...
  3. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Oh yeah and for hotshots, their reputation depends on them being on time every time, so having a dead reliable truck is mandatory. They surely can't rely on used parts. Plus for them, time is money. And a project like this takes a lot of time. I'm retired. Regards, The Tow Rat
  4. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    chri5k, The Gen3 truck I found is a good deal. I think the engine objective can be met just with exhaust, intake, and tuning. Does anyone know of an open source tuning interface? Oh yeah and can I get sufficient EGT reduction using just H2O or Methanol injection? Or will I to need a bigger...
  5. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Or did you mean frame issues on a Gen1? Sorry not sure what you mean...
  6. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Scottly, Regarding frame issues, you mean with respect to limiting torque? No, I was thinking limiting torque to take it easy on the transmission. At least that's the way I see it. Any counterarguments, flame away. Nomex On. Regards, The Tow Rat
  7. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    rzr6-4, Yeah I looked at 4500s and 5500s. I even looked at (Sheesh) Fords. Nothing I looked at has the combination I want... Cummins b series, 6 speed with reasonable ratios, under 7000 lbs vehicle weight, 35000+ GCWR, and under $20k. All of the 4500s and 5500s I looked at are optimized for...
  8. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Anyway I'm in kind of in a hurry to figure out how to build a Cummins powered truck for $15k-$20k-ish that can pull a long 6% grade at 55 at 35000 lb GCW. And to do all that without hitting crazy EGTs or killing the transmission. Thanks again @Dean2 and @392DevilDog, for pointing out that...
  9. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Troll? Don't know where that is that coming from... Guys this is only my 4th post on the forum, or something? Wow, is someone just allowed to ask honest questions here? Anyway give me a break, I'm a long time Cummins Ram owner and I have been towing with stock trucks for decades, but this is...
  10. The Tow Rat

    Cummins 12V vs 24V... what do people think?

    Yes, rzr6-4, that is a really good point. I'm not a diesel expert either, but that is diesel 101 and I should have realized that. But OK then, how does the 24V improve emissions?? Because I know from reading various forum posts, that was at least part of the reason they switched to the 24V...
  11. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Yes, Dean2 and 392DevilDog, you are both absolutely right; the engine is actually the easy part! But as to whether a Pete is needed... no, I don't really think so. Take a look at the '21-'24 Ram 3500HD. That is what gave me the idea. Ram touts a rather stunning -41600- lb GCWR for the new...
  12. The Tow Rat

    Cummins 12V vs 24V... what do people think?

    Is it true that the purpose of the 24V is entirely to reduce emissions? Traditionally four valve cylinder heads are used to achieve: 1) Lower reciprocating valvetrain mass per cam lobe. 2) Straight-shot port geometry. 3) Tumble turbulence during the intake stroke. Until recently I'd never...
  13. The Tow Rat

    Want to build a Gen1 DodgeCummins for towing, up to 35000 lb GVWR, what engine should I build?

    Hey all, I have a 1991 Cummins 5.9 2500, which I would like to build up as a 35,000 lb GCWR tow mutant. I will be doing a bed delete, Spicer S-111 or some similar rear axle, frame mounted gooseneck, and BIG HONKIN' DISK BRAKES at all 4 corners. I really want a 6 speed manual, but I'm not...
  14. The Tow Rat

    Towing capacity

    Hey 2003F350, that is something I've been wondering about for a while... To read about this on the forums, most people are pretty cynical about this. Many people believe that the big three all come up with tow ratings that are primarily driven by the marketing department, not the...
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