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  1. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    You can also use the nut on the alternator. it will only let you go in reverse, but it's pretty easy to spin from there. It's a 7/8 or 15/16" socket.
  2. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    The idle speed should not change at all. The only adjustment that changes it is the gov springs.
  3. nevrenufhp

    M51A2 repower w/ DT466

    Sounds great to me too, mainly because it's my favorite engine. It cant be too hard of a swap, mostly little stuff.
  4. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    Yes, those 2 are a quick & easy mod that you can feel.
  5. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    You can adjust the pre-boost screw, I just dont worry about it. You can make up for it with the screw on top of the pump(low rpm excess fuel screw). I have the socket, and will mail it out, but MUST get it back, since it's the only one I have. That one to ignore is the pre-boost adjustment. As...
  6. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    Ok..Lets see if I can clear it up. The full fuel stud with 2 nuts: On the very back of the pump there is 2 screws, which one is tamper proof(round head). The first hard part is getting that screw out. Vice grips or chisel works. Get those 2 screws out, and pull off the tin cover, and the screw...
  7. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    I threw in my suggestions, and changed priority. Please test drive after every step so you can learn which adjustment is doing what.
  8. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    If you havent adjusted the screw on top, dont do it until you get the rear adjustment. Then, you will have a better idea of smoke control. If you already adjusted it, dont worry. Take it for a test drive after the rear adjustment, and see if you can live with the smoke. If it's too much, adjust...
  9. nevrenufhp

    M923A2 Engine Swap

    A bigger reason to keep the 8.3 is the rpm capability it has. As most of you know about mud, having a broad rpm range can help keep you from getting buried. An ISX may have plenty of pep, but it will only rev to 2100. Get a hot rodded 8.3, and you can run to 3200. Plus, you would have the timing...
  10. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    If it's an MDF pump, where does it say that on the ID tag? All I ever see on them is MW. Not doubting you, just making sure I'm really reading what I'm reading.
  11. nevrenufhp

    Mod'ing a 923A1 Your thoughts, please

    Sure they did, but it wasnt til the later 60s, and as a option. My 67 doesnt have PS, but my nephew's 72 does. I'm more worried about F100 brakes, than the steering.
  12. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    I just give you a hard time, because you are an 88M. No offense, it was put in my head back in AIT that 63B's have to pick on the 88M's. On a serious note, I really like that BAE turbo upgrade to the HX45. Even the older trucks can have fun with the H2E's turbo.
  13. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    Those are for the P-pump, and you can make your own plate with even more power than the aftermarket plates. A #0 plate is pure fuel at all rpm. Cost you a little time on a grinder.
  14. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    On an otherwise stock setup, the compounds wont gain much power. When paired correctly, the EGT drastically drops at full power. It really wont be of much benefit without more rpm and a bit more fuel. The stock turbo can hold up to the fuel being cranked up. The compounds will be more prone to...
  15. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    It's a tamper proof screw. You have to ruin it to get it off. The head is smooth and round. A chisel can work to make a slot, until you can get a screwdriver in there to take it out. Then, you can replace it with a new 4mm coarse thread screw/bolt.
  16. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    After talking with my pump guy(he even builds tractor puller pumps), he says 400+hp for sure, possibly close to 500 with the MW pump with 10mm plungers, all the adjustment tricks he knows, good injectors, and a bigger turbo. As said before, the drive train will snap pretty easily with big power...
  17. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    I noticed on the one I did that the air restrictor gauge started coming up. Everything was checked, and even pulled off all the extra pipes for the fording kit, but no difference. You would have to go to a much bigger element and box to get more flow. As long as it keeps the EGT under control...
  18. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    I want to make pix and video. Even posted a request on my FB page. I'd travel about a 200 mile radius to get it all too.
  19. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    All that, and no pump pix? We like the action shots.
  20. nevrenufhp

    So who has bumped the power on a 6CTA cummins

    It's normal for it to raise the idle rpm after tightening the gov springs. Adjusting the idle is as simple as a bolt with a jamb nut. Cycle the lever with the engine off, and you will see it. Idling at 500 is not good either, it should be at 650 in gear. Go for the 4 clicks, and back off the...
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