New motor disappointment

Discussion in '96-04 - 2V Specific' started by torch318, Oct 4, 2014.

  1. torch318

    torch318 Active Member

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    This spring when I broke a piston in my motor I went ahead and ordered a MMR longblock with tfs heads and stage three blower cams.I added the other supporting mods bigger injectors, return fuel system, eight rib upgrade on my p-1sc, 10 percent overdrive crank pulley after some belt slip, thump racing tensioner. My tuner called today and said that my new motor only made 413 hp with 14.5 lbs of boost and my old setup ran 390 hp with 13 lbs of boost thru a auto trans:mad:. He really didn't have any answers for why it doesn't make anymore power but is concerned about the cams being improperly degreed. His other concerns were the IAT's jump from 80 to 180 on a full pull, he doesn't like my pro products intake manifold due to heat soak and prefers a stock one. Anyone have any thoughts on whats going on.
     
  2. TanTop94

    TanTop94 Well-Known Member

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    Did you use the same tuner for both motors?
     
  3. torch318

    torch318 Active Member

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    Yes it's the same place.
     
  4. Wichers123

    Wichers123 Well-Known Member

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    Intercooler setup? Sounds like he's pulling timing for those iat's. The manifold has nothing to do with it.
     
  5. torch318

    torch318 Active Member

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    Im running a two core intercooler he said a three core would be better.
     
  6. 97stanger

    97stanger Legend

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    Something definitely off. What fuel are you running? When you say you upgraded the fuel system what size injectors and pumps are you running? What kind of timing are you seeing?
     
  7. torch318

    torch318 Active Member

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    Im running 91 octane with 60 lbs injectors and a division x budget return system with two 255 lph pumps. Not sure what the timing is at we didnt get into that when I talked to him on the phone.
     
  8. Wichers123

    Wichers123 Well-Known Member

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    Your prob over spinning the supercharger to get those iat's 60/65k is the limit of that charger. I bet if you turn it down to 10psi it will prob be more efficient. Lower iat's means more timing which means more power
     
  9. torch318

    torch318 Active Member

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    He talked me into doing the overdrive crank pulley which puts the blower rpms at 71k
     
  10. Wichers123

    Wichers123 Well-Known Member

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    See that's the problem the charger isn't rated at the rpm. Take the overdrive off and redyno I bet it will pick
     
  11. torch318

    torch318 Active Member

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    It only ran 400 hp before we did the overdrive pulley
     
  12. Wichers123

    Wichers123 Well-Known Member

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    If your wanting higher boost numbers you have to upgrade to a bigger d1 or even larger f1
     
  13. Wichers123

    Wichers123 Well-Known Member

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    What "stage 3" cams? And valve springs?
     
  14. torch318

    torch318 Active Member

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    The plan is to upgrade to a d1 down the road. The tfs heads come with upgraded springs and they are MMR's blower cams
     
  15. Wichers123

    Wichers123 Well-Known Member

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    fts heads have two different springs. I'm wondering if your having valve float and with added iat's it's just not making the power.
     
  16. torch318

    torch318 Active Member

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    Well that would be MMR'S f*** up but since they built the longblock I would hope they put the right springs in.
     
  17. Wichers123

    Wichers123 Well-Known Member

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    Yeah I would say so. Um your high iat's need to be looked into. And when you say with out the od pulley you only made 400 was that before the built motor?
     
  18. torch318

    torch318 Active Member

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    No that was a month ago with the new motor it only made 400
     
  19. 96blak54

    96blak54 Legend

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    COMPRESSION COMPRESSION COMPRESSION!!!

    Lets say with stock heads your compression was 8:1static with corrected dished pistons. Then you add cams that change the IVC location, this effectively altered your dynamic compression, now your 8:1static is nearly impossible to achieve because of effective compression.

    Since you opt for tfs heads, raise your static to 11:1static with the .020" squish distance. Pump her full of air!

    I can narrow down the actual static compression for your particular build if you specify all the technical.
     
  20. torch318

    torch318 Active Member

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    9.1 is what it's supposed to be at