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  1. Frankin_truck

    Tuning 100% Over Injectors

    Good tuning is gonna help but only so much can be done. Compression ratio is going to be the biggest factor in this anything 16.1 and lower is gonna be smokey on start up till it warms up a bit.
  2. Frankin_truck

    lifting heads?

    Put a pressure gauge in the cooling system. If your exceeding cap pressure (15psi) you could have a problem. If your coolant tank is too small it should puke out excessive coolant and pressure should level out but if pressure stay at 15psi or more all the time you have issues.
  3. Frankin_truck

    Lml injectors in a lly head

    Any updates on this?
  4. Frankin_truck

    Won't start after alternate fire cam

    Just a idea but did you trying switching the cam and crank sensor? They are will fit in either spot and it won't run or will hard start had this happen long time ago can't remember the exact symptoms. This would throw codes for cam position sensor.
  5. Frankin_truck

    Wire harnesses

    I have a lly engine harness if needed (engine to sensors)
  6. Frankin_truck

    Head testing for pullers

    great info
  7. Frankin_truck

    Compression ratio

    Seem like alot more things involved to run 14mm heads studs. You have to get your block machines to accept 14mm head studs and special head gaskets and get your heads machined out. Do it all over again if you have to replace one of them things.
  8. Frankin_truck

    Compression ratio

    What's better arp 625 12mm or arp 2000 14mm studs?
  9. Frankin_truck

    Lifters

    Hopefully someone can answer this for us
  10. Frankin_truck

    Compression ratio

    I bet the injectors made the difference especially if you ran the same tune. Can't see how you would gain hp by dropping compression in that set up
  11. Frankin_truck

    Compression ratio

    What size injector did you put in?
  12. Frankin_truck

    Compression ratio

    I could be looking at this the wrong way but cylinder pressure= power? To much can be hard on parts. I think the dynamic compression ratio would be lower at 12:1 if they were running same size turbo bringing down cylinder pressure. Must be some advantages to running low static compression ratio...
  13. Frankin_truck

    Compression ratio

    Why do all the cummins guys want to run such low compression? I have heard of guys running 12:1 in cummins land
  14. Frankin_truck

    Compression ratio

    Did your use the same cam?
  15. Frankin_truck

    Lifters

    Talking with a very knowledgeable duramax enthusiasts yesterday and he was telling me that lb7 lifters are better then lbz lifters because the lb7 lifters are self lubricating and the lbz are not. Does anyone have experience with this? had them both out before but can't say I remember a...
  16. Frankin_truck

    Compression ratio

    Sorry I forgot about this. My turbo is protrusion style with a Forward facing map groove
  17. Frankin_truck

    Lbz fuel pressure sensor data

    My guess Is you have a massive leak. Never seen it happen to me but you could have a hung open injector?
  18. Frankin_truck

    Compression ratio

    Talked to a few reputable people in the duramax community 15-16:1 seems to be the general consensus. Turbo size seems to have a lot to do with
  19. Frankin_truck

    Compression ratio

    its a 2.8" class I run a gt55 bushed down charger bushed down.
  20. Frankin_truck

    Compression ratio

    What's everyone's thoughts on compression ratios for a full blown sled pulling engine dedicated puller. Been doing lots of research this topic seems to be lots of mixed answers. Some say high compression is free horse power but hard on parts others say stay low and run more boost. I know statics...
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