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

    Ok well the whole exhaust side is going to be re done. Currently the 2.5" twin exhaust merging into a single 3" is just far too big for the power i want even in a compound setup. Just for an example i'm after roughly 400-450kw total in my setup or enough to run a 10.99 at the drags.

    Nuggetgarage on youtube have a rearmount turbo VH45 supra with a GT4788 making ~1000rwhp on twin 2" pipes and run low 9s.

    This car does 8.1 @ 170mph and makes ~1200hp with twin 2.25" pipes to a single turbo...
    FB_IMG_1640932981284.jpg

    Basically the piping size i have on the car at the moment is capable of like ~1500hp .

    I'm going to go get my front pipes remade in 2" stainless steel and wrap them to see how much of a difference is made. If the difference in spool is noticeable i'll re-do the entire setup to twin 2" to single 2.5" and tuck the intercooler pipe up so its not hanging close to the ground.

    Another interesting thing to note is charge piping doesnt seem to have to be as large either with a few cars i've found doing ~750rwhp on 2.25" charge piping. I'll be keeping mine 2.5" but i will step it down to 2-2.25 next to the radiator as i want to put the factory radiator and fan back into the car, the Honda stuff is just not cutting it.

    I got it all that wrong but i still got the turbo on full boost at 4500.
     
    IB likes this.
  2. SRB-2NV

    SRB-2NV #TEAMROB

    Heres a bit more proof i went overboard. This car below is 6.6L with an 88mm GTX47 using twin 2.5" to single 3". Probably 1500hp+

    FB_IMG_1641218459502.jpg


    Shows the compound system works... i spooled a 1000HP GT42R on this size piping with a 3L.
     
  3. SRB-2NV

    SRB-2NV #TEAMROB

    Also seems the factory radiator idea is a no go. Cant route the charge piping anywhere without causing the same issues i have now. I sourced a V mount radiator kit that i should hopefully be picking up in a few days.
     
  4. SRB-2NV

    SRB-2NV #TEAMROB

    V mount radiator kit is here. 20220108_152025.jpg
     
    Harts likes this.
  5. rob260

    rob260 Administrator Staff Member

    Looks interesting what did you use?
     
  6. SRB-2NV

    SRB-2NV #TEAMROB

    Its a second hand but never used CXracing kit.
     
  7. SRB-2NV

    SRB-2NV #TEAMROB

    Ok well guys, the rearmount is being taken off and the car is getting the exhaust re fitted. It was a good run and the system works, it just doesn't work as well as i'd like. The car definately makes more power but since the stock turbos have to breathe through the rearmount its pretty much the same as having upgraded turbos fitted. For the system to work how i want it, i'd have to mount everything up front or remove the stock turbos and do it all rear mounted.

    Between that and my fabricator moving 3 hours away im also over the police attention the car gets. Realistically i'll just refit the nitrous kit and get it tuned again.
     

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