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Rear Turbos... I know, but it was coming anyway :)

This is a discussion on Rear Turbos... I know, but it was coming anyway :) within the Forced Induction forums, part of the LSx Technical Help Section category; so i made up my scavenger pump wiring harness. how'd i do? lol so what do you think about that ...

  1. #121
    Senior Member JoshuaGrooms83's Avatar
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    Red
    98 Trans Am

    so i made up my scavenger pump wiring harness. how'd i do? lol


    so what do you think about that short 12an line "mini sump" right off the turbo?

  2. #122
    Senior Member JoshuaGrooms83's Avatar
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    98 Trans Am

    got my 317 heads in today look alright. definitly need to be cleaned up. nothing some solvent and maybe a parts washer cant handle lol
    now i have something to put my valve covers on lol




    Not too shabby for $80

  3. #123
    Senior Member JoshuaGrooms83's Avatar
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    98 Trans Am

    AHHHH!!! so pissed right now. i had a guy make the inlet pipe and he totally missed the mark. totally not even close


  4. #124
    Senior Member JoshuaGrooms83's Avatar
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    Red
    98 Trans Am

    well i ordered a few things today
    MTX-L wideband
    3"x14" resonator muffler with o2 bung
    3" 90degree pipe
    corsa clones twin stagger tips 4" out/3" in
    8 3" v-band flange and clamp kits
    2 OBX resonator bullet mufflers to replace the after market cats and to make sure the exhaust is nice and sealed

  5. #125
    Moderator 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    Quote Originally Posted by JoshuaGrooms83 View Post
    AHHHH!!! so pissed right now. i had a guy make the inlet pipe and he totally missed the mark. totally not even close
    Click for full size
    Click for full size
    Welcome to the beginning of the FI world.

  6. #126
    Senior Member JoshuaGrooms83's Avatar
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    lol yeah, more like performance world lol. most of the time everythings alright, but then theres an item or 2 that just really pisses you off ocassionally lol
    so far this one, my aftermarket cats that got welded poorly, and my intercooler issue. but all in all, its been ok. mostly just shipping errors most of the time.

  7. #127
    Senior Member JoshuaGrooms83's Avatar
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    well got my MTX-L wideband in. ill being doing gauges this week
    also got a few things on order
    couple of these to replace the cats

    corsa clones 4" tips with 3" inlet

    a bullet muffler with a o2 bung in the back to help with tone and also have the correct wideband reference location, after the turbo

    8 of these vband and flange kits to hook up the bullet mufflers, the turbo inlet pipe, and the tips. this is gonna be adjustable as hell!

    vacuum manifold kit to hook all the new gauges and vacuum dependant systems up to


    Oh and got my turbo header inlet pipe finally!
    its coming along swimmingly lol

  8. #128
    Senior Member JoshuaGrooms83's Avatar
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    ug... always somthing. the after turbo resonator is piped wrong so its gonna hav eto be replaced. for some reason they necked it down on the inside of the resonator to almost 2.5" from 3" on the out sides... i dont get it.
    on a happier note, the corsa 4" clones are BAD ASS looking!!


  9. #129
    Senior Member JoshuaGrooms83's Avatar
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    mocked up my layout just to see if i got everything ready, i think im ready! lol
    heres my build list that i think is finalzed and have at the momemt or will have in my garage, did i miss anything?

    INTAKE
    Cone filter tucked into wheel well
    3” intake into turbo
    2.5” charge piping
    T-bolt clamps and reinforced silicon hose couplers
    31x11x3 bar and plate intercooler
    50mm BOV and pipe
    LS6 intake manifold
    80mm Throttle body
    LS6 valley pan
    4 port vacuum manifold

    ENGINE
    Stock 5.7L LS1
    Tick custom rear turbo cam 226/235 .605/.610 114+2 (LXL and tick custom lobes)
    Tick supplied valve springs .650
    Tick supplied hardened pushrods
    LS2 timing chain
    Stock Heads (317 with .048 LS9 gaskets later for 9.8CR)
    Comp cams Rocker trunion upgrade
    ARP crank bolt
    Head studs

    EXHAUST
    OBX stainless steel headers 1 primary, 3” collectors
    Catless 3” ypipe with 3” OBX resonators
    Stock I-pipe
    Sts style T4 header pipe with 44mm wastegate port
    3” after turbo resonator
    2” Wastegate dump exhaust
    3” turbine exhaust
    4” corsa clone tips/3” inlets

    TURBO SPECIFIC
    ON3 T76 w/.81 AR (.96 later)
    Compressor Wheel - 76mm /.80 ar / 4” Inlet and 2.5”
    Compressor Outlet - Inducer- 76.71mm / Exducer- 102.36mm
    Exhaust Housing - T-4 Flange .96 ar / 3.0" Vband outlet
    Exhaust housing - Inducer- 74.5mm / Exducer- 65mm
    44MM wastegate 4psi spring (10psi spring for later)
    55mm BOV
    AEM water/Meth kit

    TRANSMISSION
    Stock 4L60E
    Revmax stage 5 billet cover 3200 stall
    B&M tran cooler
    Glowshift trans temp gauge

    OIL SYSTEM
    LS6 oil pump
    4an feed
    Summit check valve
    10an drain
    4psi hobb switch to piezo buzzer alert
    Gear scavenger oil pump
    10an return line into oil pan

    PCV system
    LS6 valley pan with PCV valve
    Catch can
    Check valve
    Vent line ran to fresh air intake tube from valve cover

    FUEL SYSTEM
    Stock fuel rails
    Racetronix 225 fuel pump and harness
    Aeromotive boost referenced fuel pressure regulator with 3/8 line return
    60lbs siemens injector

    ELECTICAL
    NGK Spark Plugs BKR7E-11 5791 gapped at .032
    MSD wires
    Stock coils

    ENGINE MANAGEMENT / MONITORING
    Innovate MTX-L wideband
    Glowshift digital boost/vac gauge
    Glowshift digital fuel pressure gauge
    Frost base tuned (HP tuners later)
    GM 2 bar MAP sensor
    GM 85mm MAF sensor
    IAT sensor in MAF used, using wire adaptor.

    MISC ITEMS
    GM 93-97 radiator cover
    Glowshift 3 gauge a-pillar pod

  10. #130
    Senior Member JoshuaGrooms83's Avatar
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    heres my mock up of what i got
    mind you i have the little stuff like couplers and tbolts and hoses lol but this is the major items, also the fuel stuff is already on the car except the injectors.






  11. #131
    Moderator 35th-ANV-SS's Avatar
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    Do you plan on running methanol at some point, or no?

  12. #132
    Senior Member JoshuaGrooms83's Avatar
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    yep, got an AEM meth kit that has a progressive controller. gonna try and plumb the washer tank to run meth.

  13. #133
    Senior Member JoshuaGrooms83's Avatar
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    got alittle welding done today




    mocked it up and then high temp painted the inlet pipe

  14. #134
    Member initechpeter's Avatar
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    2002 Trans Am WS6 - Red
    2013 Chevy Traverse LTZ

    What exhaust kit is that? I like the tips.

  15. #135
    Senior Member JoshuaGrooms83's Avatar
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    not a kit, its custom piping i bought to have fitted for the turbo kit. i sought out individual pipes for it. the tips are corsa clones i got off ebay as are the OBX resonators.

  16. #136
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...

    Joshua,


    Have you or are you going to relocate the alternator to the where the egr use to sit (front of passenger cylinder head) to make room for the turbo piping/stuff?


    Also are you keeping a running total. Kinda interested in seeing how much this will cost.
    Last edited by SMWS6TA; 02-26-2013 at 08:47 AM.

  17. #137
    Senior Member JoshuaGrooms83's Avatar
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    actually yer. ive been keeping tabs on almost everything ive boughten. things like extra piping and tbolt clamps i might not have kept tabs on every single dollar lol but ive got most of it. ill have to look what ive spent so far. ive got a few hundred more to go before i done im sure, but im pretty much past the parts retrieval portion lol now its pre install time lol

    also thats the benefit of running an sts style rear mount turbo piping, no major aterations of the body or components. a battery relocation, radiator re-position, or alternator relocation isnt needed.
    Last edited by JoshuaGrooms83; 02-26-2013 at 09:12 AM.

  18. #138
    Senior Member JoshuaGrooms83's Avatar
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    build cost in parts thus far for eveything to go on the car with the list above is roughly 3595. this isnt bad since this is EVERYTHING to have a resr mount turbo system properly to run on your car. the STS system costs twice that and you dont get gauges, larger turbo, proper sized injectors, fuel pump and wire harness, or other stuff that makes a rear mount funtion more effeciently.
    now granted, with the sts system, you do get vehicle specific piping and pre fabed piping and whatnot so you do get that, but for $3000 more, that doesnt justify the cost. and mind you, almost EVERTHING ive boughten other then a few things, is brand new.


    HPtuners is gonna add $699, frost base tune $200, and tick camshaft $742, to the build. plus what ever extras like welding. the inlet pipe only cost me $20 to weld together.

    in total im looking at roughly $5237 + maby some welding labor.
    still under the full $6000 sts kit that doesnt come with everything ive gotten, like a cam, tuner software, and whatnots. im doing pretty good. if STS offered a kit that had EVERYTHING that i was doing to my car, they probably would sell it at APS twin turbo prices of $12000 which is rediculous!

  19. #139
    Senior Member JoshuaGrooms83's Avatar
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    had a question for you wiring gurus lol
    anyone know where exactly to tap into for the oil pump? i found this schematic. im thinking the gry 120 wire but not sure

  20. #140
    Senior Member JoshuaGrooms83's Avatar
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    so i have a few more things to report, ill take some pictures when its light out again lol
    installed the boost gauge, fuel pressure gauge, wideband gauge, and vacuum manifold log. also fixed the wiring so that my trans temp gauge actually dims when i turn the head lights on.

    was really simple actually once i mounted the gauges in the gauge pillar pod and simplified the wiring. i pre fabed it so that it goes in as a unit. all the red 12volt switch wires bundled together, all the ground wires bunded together, and all the headlight switch wires bunded. the only one thats gonna be a hassle later is the wideband, but i am glad i set it on the botton pod position. the data serial cable, 2 analog sources, and wideaband cable sit just under above the vent lol but it shuold be ok. im not using most of them yet except the wideband.

    all i gotta do now is hook a wastegate and BOV to the manifold. i also hooked up the boost reference hose to the FPR. its not getting pressure yet lol but its all hooked up so when i get the turbo on, it will be there when i need it.

    the boost gauge is only getting vacuum right now lol but its reading -11 at idle. im assuming thats normalish. it moves been i apply the throttle. not sure what, it moved too fast lol its digital so its quick.

    the fuel pressure guage reads 0 for now lol no fuel going through the FPR yet lol but its registered at zero so thats cool lol. i need to hook that up so i can check the fuel pressure.

    tomorrow ill hook up the wideband sensor so i can check and see what my AFR is.

    the vacuum manifold kit was great! had all the fittings, different diameter hoses and barbs to do everything! got it right off the booster. for now the two other ports are blocked off until i hook up the wastegate and BOV. the meth kit will have to t off something. the BOV hose should be ok for that since it will be the closest to tie into for that.

    i think tomorrow while im under the car ill also start putting the oil pump in there. just to get it ready to hook it up. the less i have to do the better when the turbos ready to go on it
    Last edited by JoshuaGrooms83; 02-26-2013 at 06:26 PM.

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