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VG30ET Engine Rebuild

Discussion in 'Z Re-builds' started by 300zxt, Oct 3, 2016.

  1. 300zxt

    300zxt New Member

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    So I roasted a head gasket a number of years ago and after some slight modifications I've finally got the car back together and running.

    This is just a teaser video, the engine is sounding very strong with no issues at all on the dyno. It's only on 6lb of boost for the moment as I run the motor in however expecting 350rwkw+ from this setup at full noise.

    https://youtu.be/m8pRnMDnVL8

    The car is still being completed and I will provide more photos and a full modification list when I build up the courage to sit down and add it all up!

    Stay tuned!
     
  2. jetett

    jetett New Member

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    awesome mate looks and sounds the goods... specs on the dizzy?? obviously running aftermarket ecu, is it modified or factory? i hear some people having issues running individual coils with the factory dizzy
     
  3. 300zxt

    300zxt New Member

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    I've ditched the rotor button and cap obviously as you can see in the video. I'm going to get a plate fabricated to cover up the distributor mounting point so it's being utilised purely for the crank angle sensor for simplicity sake at present.

    The stock ECU is sitting in a box and I'm running a full stand alone MoTeC EMS tuned by Godzilla Motorsports. This car is not factory and I have been guided by the best in the business in setting it up.

    Whilst the CAS setup isn't permanent there have been no issues thus far. I expect to have the road worthy done in the next few weeks, only small stuff left like cv boots, rear washer etc to pass rwc then it's on the street.
     
  4. MikeZ32

    MikeZ32 das Über member

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    Welcome back. Was wondering where you went. Always curious to see changes to your Z31.
     
  5. 300zxt

    300zxt New Member

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    Haha cheers mate. Yeah it's been a while for sure. Typical story of life getting in the way and a rebuild of this kind taking much longer than anticipated. That's mostly due to my inability to stick to scope and changing everything lol :)
     
  6. 300zxt

    300zxt New Member

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    So I failed RWC due to a leaking shock at the front. This was most unfortunate however there is a solution...

    Do I pass now Mr. Road Worthy?
     

    Attached Files:

  7. 300zxt

    300zxt New Member

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    I've started to compile the modification list, I'm still forgetting some stuff I'm sure but this is the bulk of it.

    Modifications
    ACL Race Series Engine Bearings
    ARP Head Studs
    Eagle Forged H-Beam Rods
    Wiseco Forged Pistons
    Multi-layered Stainless Steel Head Gasket
    Manganese bronze valve guides
    Turbosmart Wastegate 50mm
    Turbosmart Fuel Pressure Regulator
    Go Fast Bits Blow-off Valve
    Adjustable Cam Gears
    Schneider Valve Springs
    Manley Racemaster Series Stainless Valves +1mm
    Stage IV Port and Polished Heads
    Stage III Schneider Racing Cams
    Adjustable Cam Gears
    Clevite Hydraulic Lifters
    Mercury Ignition Coils
    Aeroflow tanks & fittings
    Speedflow hoses
    Custom alloy fuel rails
    1400cc Sard Injectors
    Dual Bosch Pumps
    Custom PWR 50mm core radiator
    16" Spal 3000cfm thermo fan
    HKS Intercooler kit
    K&N Pod Filter
    Gutted intake manifold
    3" mandrel bend stainless steel exhaust
    Kakimoto Racing Muffler
    Hi-flow Metal Cat
    Custom dump pipe
    Custom wiring harness
    Link Extreme Standalone EMS
    M&W 6 Channel CDI unit
    3 bar map sensor
    Custom 6 puck ceramic clutch
    Powertrix Road/Track coilovers
    Swift Springs

    Some specs on the turbo:
    PT6262
    E Housing (3.0" Intake / 2.0" Outlet)
    T3 V-BAND 0.63A/R
    Ball-Bearing
     
  8. 300zxt

    300zxt New Member

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    Here's a few teaser photos, I'm still sorting through these.

    Before
    [​IMG]

    After
    [​IMG]

    Pick-up
    [​IMG]

    Im only running 6psi at the moment and it's already berzerk to drive. The car has been run in on the dyno already but I'm going to put about 2,000kms on the clock before I go back to Godzilla Motorsports for the big power tune.
     
  9. MikeZ32

    MikeZ32 das Über member

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    Very nice. Going by the size of injectors you've opted for, E85/flex tune?
     
  10. brisz

    brisz Well-Known Member

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    Very nice Z31 goodness !
     
  11. 300zxt

    300zxt New Member

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    Yeah but that will come much later when I want the last 5% out of this setup. I still want it as streetable as possible - it runs just fine on this tune with 98 even cold starts!
     
  12. rob260

    rob260 Moderator Staff Member

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    Very nice
     
  13. 300zxt

    300zxt New Member

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  14. Anti

    Anti 14.7 x 14.7 = 44.1

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    Why not convert to a twin cam?
     
  15. 300zxt

    300zxt New Member

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    What's the fun in that?
     
  16. Anti

    Anti 14.7 x 14.7 = 44.1

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    Horsepower?
     
  17. Swifty Devil

    Swifty Devil New Member

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    VS. weight saving, much more room to work with, more torque
     
  18. 300zxt

    300zxt New Member

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    Thank you! lol My ambitions are to keep it as streetable as possible whilst still looking stock to the untrained eye. The sound is a bit of a give away though! :/
     
  19. 300zxt

    300zxt New Member

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    Here's some more pictures.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  20. 300zxt

    300zxt New Member

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