Nems NA to TT conversion, with an added suprise ;)

Discussion in 'Member's Garage' started by SRB-2NV, Jan 22, 2014.

  1. SRB-2NV

    SRB-2NV #TEAMROB

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  2. Boll!

    Boll! Well-Known Member

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    I’m loving this concept, keep it up, I’m sure you’ll get some good results once sorted
     
  3. SRB-2NV

    SRB-2NV #TEAMROB

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    Cheers, im keen to sort it out and run it at the drags.

    Over the weekend ill be adding a few things to try and limit the amount of smoke blowing out. Ive just added a boost controller for the GT42 and removed the springs out of the quick spool valve.
     
  4. SRB-2NV

    SRB-2NV #TEAMROB

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    Ok well im going to have to try a new drain setup, the pump just cant remove the amount of oil going through the turbo. Ordered a compact 45° drain so we'll see how it goes.
     
  5. SRB-2NV

    SRB-2NV #TEAMROB

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    Well, seems the china choo choo boys seals are dead. I changed the drain to a 45° 3/4", put a catch can under the turbo and installed a 1mm restrictor but it just keeps smoking. My fault in any case, my original drain was a 90° then the line went almost straight up and my core was clocked in a bad position. This is the reason im happy i used an ebay turbo as it was only ~300 for a new core. Old core will be sent to hypergear for a gtx comp wheel and t51r comp housing.
     
  6. SRB-2NV

    SRB-2NV #TEAMROB

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    Another thing to note is i need to up the boost on the GT42R, at 1.6PR it flows barely 55-56lb/min and a VG30 at 2.8PR total flows more than that. If i turn up the boost on the small turbos too high the power flattens off up top and im fairly certain this is due to the GT42 being pushed off its compressor map.

    Next step after i replace the core is to play with spring pressures, im going to up the boost on the GT42 to 12psi or so and have the stock turbos at 12-14 for a total of 24-26psi at the intake manifold.
     
  7. SRB-2NV

    SRB-2NV #TEAMROB

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    Right. Update time. I put a new core into the 42R and the smoke is exactly the same. We are now thinking that it has a headgasket issue. No oil mixing, no overheating just smoke and a slightly wet cylinder 6.

    I have a spare NA motor so if it comes to it that one will get gaskets and headstuds. The question i have now is what to do with the compound setup, as there are three options.

    1) keep it on the new engine and refresh the stockers or add highflows/gt2560s.

    2) run rearmount only with a gtx3584.

    3) remove it completely.
     
  8. Boll!

    Boll! Well-Known Member

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    My opinion, only because I’m real keen to see this thing go:
    Option 1,
    Keep the 42, sort out some issues and run it.

    My thoughts are once it’s sorted, it’s going to be a weapon!
     
  9. SRB-2NV

    SRB-2NV #TEAMROB

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    A relative of mine who did all the fab work just offered me a great deal to build a single front mount kit using the 42R i have.. so if i pull the motor that may be the way i go. I built this setup because i didnt want to pull the engine to change turbos.... now that i have to pull it i may aswell.
     
  10. IB

    IB ?????

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    If it's just no 6 that's wet, then it might be a ring or ring land. So may have seen some detonation.

    I was hoping you'd succeed with the compound set, it's very unique for a zed.
     
  11. SRB-2NV

    SRB-2NV #TEAMROB

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    No detonation present, timing is sane and fueling is on point. The problem is white smoke and clear water coming out of the exhaust.

    This engine never had amazing compression and has been at 300+rwkw for the last few years with uneven compression, auto cams and stock turbos that have 300,000km on them.
     
  12. SRB-2NV

    SRB-2NV #TEAMROB

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    Just picked up a rebuilt RE4R03A box, apparently had 4k spent on it but i'll be servicing it and getting a manualized valvebody with a B&M ratchet shifter.
     
  13. SRB-2NV

    SRB-2NV #TEAMROB

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    Ok so we did a compression test and a coolant pressure test.

    Comp was
    1: 135. 2: 135
    3: 135. 4: 130
    5: 130. 6: 125

    Coolant lost 1psi of pressure after 20 minutes of sitting.
     
  14. SRB-2NV

    SRB-2NV #TEAMROB

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    Ok so it seems the motor isnt completely dead, however the smoking issue has to be dealt with. Currently we are going to weld a pair of cats back into the exhaust and i am changing the oiling setup to the gt42 completely, it will be a standalone system instead of being fed from the engine.
     

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