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  1. I

    db2/4 pump absolute max cc

    The only way i could imagine running 2 ip's would be to run them back to back with bolts through the existing gear, lots of fab work and probably a pain to get timed correctly. I was really interested in if there was physically enough room for larger plungers and if ds4 guts would work, but now...
  2. I

    db2/4 pump absolute max cc

    Does anybody know how much fuel the cat 3208 pumps flow? Also for the dual ip setup how would you do injector lines. I see that R&D says they are still using .310 plungers, is there no way of going bigger?
  3. I

    db2/4 pump absolute max cc

    It just hit me how massive that plunger would be, couldnt help but laugh at myself. So rethinking my question, im looking for 600 on fuel, what size plunge do yall think it would take. My calculations put a .400 plunger at 270cc with a 4 plunger rotor, again im probably wrong on that one.
  4. I

    db2/4 pump absolute max cc

    Well guys i have officially started my high hp 6.9 build, 17.5 to 1 comp, aftermarket cam, studs everwhere, peened rods, oringed block, 60% over injectors, s466 charger. Now i am trying to figure out a pump, the thought crossed my mind of doing a p pump but it will be a huge pain. My question is...
  5. I

    1200 hp idi rods

    I was just wondering if there was any truth to the 1200 hp hypermax truck running stock rods, if there is, what makes it possible? Stock forged psd rods are good for like 550, our idi rods cant be that much stronger can they?
  6. I

    big hp idi

    This ^^^ Like Gary said, we haven't found the limits of the block, so why fill it when it isn't a weakness? How much fuel are you wanting to run with that p-pump? I just thought id fill the block for a little extra insurance, and i havent totally figured out how much fuel i want yet, ill...
  7. I

    big hp idi

    Alright guys its time to stop talking and get building, anyone know of a 6.9 core engine near ft worth? I may have one but need to find out what condition its in. My plan is a full cryod bottom end with shaved pistons to acheive 19-1 compression, copper headgaskets and o-rings to hold back...
  8. I

    big hp idi

    so ive been looking at maybe building a db2/4 hybrid pump for myself and ive got some questions. First, is the ds4 the same as the db4. If I remember correctly, the ds4 was put on 6.5s. Would the rotor from a ds4 work? Finally, is the rotor the only part that needs to be swapped, if not what...
  9. I

    big hp idi

    I really like the idea of twin db2/4 pumps, but not the idea of belt drive, could they bolt together through the timing gear with longer bolts, talk about an awsome set up
  10. I

    big hp idi

    So im still trying to figure out, whats the weak point, do we just not have the fuel or boost to push into the 500+ rwhp range, or are our drivetrains just to inefficient? We obviously have the head flow, and i think with some work, boost shouldn't be a problem. Ive never been inside a DB2 pump...
  11. I

    big hp idi

    In response to some of you guys, my deffinition of high hp is 500+, not exactly daily driver but i dont think 150cc of fuel is gonna get you there.
  12. I

    big hp idi

    So i was thinking earlier today, why havent we seen any huge hp idi's running around? I mean as far as i can see, there are 3 weak links in the idi design, headgaskets, fueling, and wrist pins. The headgasket problem is easy, fire rings and custom low compression pistons, and for fuel, what...
  13. I

    c6 with e4od converter

    Thank you all very much, i think im going to do the swap and drill the flexplate. Thanks for the info.
  14. I

    c6 with e4od converter

    I planned on going full manual with a floor shifter, but i was wondering about the flex plate, how would i drill it and wouldnt that throw it off balance, what if i got one from an idi, cut out the bolt holes in the center and welded mine in place.
  15. I

    c6 with e4od converter

    Well that sucks, but another question, do any of yall know how i might get this to work. I would really like a c6 behind my 7.3 (much cheaper to build) or is there no possible way?
  16. I

    c6 with e4od converter

    Hey guys, just a quick question, do any of you know if an e4od torque converter will work with the c6 transmission. I might be replacing the e4od in my 1996 7.3 and i know the bellhousings right, but dont have a clue what to do about the torque converter, thanks again.
  17. I

    e4od build

    Hey guys i got a 1996 7.3 with the e4od and im planning on getting 400+ hp out of it. Now i know that the perfect tranny would be a BTS but i just dont have that kind of money. I was wondering if any of you had the suncoast extreme rebuild kit in your trucks, and if so are they pretty good. Also...
  18. I

    bad injectors?

    Hey guys i was just wondering what the symptoms of worn out injectors are. I think mine may be going. Thanks a lot
  19. I

    the dreaded chuffing sound

    OK I'm realy confused now, I got the passenger side head off but I can see nothing wrong. All the valves are sealing, not wiggling no burned valves. What now, I'm replacing the cylinder 1 valves,( showed low compression, not sure if gauge working properly) and all stem seals. Were do I go from here?
  20. I

    the dreaded chuffing sound

    Hey guys I got the compression test done and all the cylinders showed 300 ( cold engine) except for cylinder 1 that showed about 170. Also before I parked her she had no power and constant black smoke, still sound like valve guides?
  21. I

    the dreaded chuffing sound

    OK guys thanks a lot ill get started on it this weekend
  22. I

    the dreaded chuffing sound

    Thanks guys shes not using a huge amount of oil but is definitely burning it. How do you go about pulling the springs?
  23. I

    the dreaded chuffing sound

    Hi guys the old money pits acting up again. A few weeks ago my 1985 6.9 ran low on oil. I left the truck sitting for about two weeks until I got around to changing it. Last night after getting the oil in, when I started it up I heard a kind of chuffing/ popping sound from the exhaust. I am...
  24. I

    1985 6.9 for sale

    Sorry guys sold it
  25. I

    1985 6.9 for sale

    Hey guys I have a 1985 Ford f250 for sale. She's got a freshly rebuilt 6.9 complete with arp headstuds and the c6 tranny. The truck has a 2.5 inch straight pipe to a 5 inch Aussie stack. The fuel pump is turned up 2 flats and has a pyrometer. Price is 3500. She is my pride and joy but need...

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