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Thread: xR - Series Engine Variants

  1. #1
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default xR - Series Engine Variants



    Engine model and generation:
    18R-GEU

    Top End Modifications:
    88253 head with injector reliefs cut.
    EGR removed and blocked off.

    Bottom end modifications:
    9.7:1 pistons, 0.5mm oversize
    balanced bottom end

    Forced induction:
    none.

    Management:
    Stock 18R-GEU with "tweaked" AFM (still wasn't good enough)
    Converted 22R-E electronic ignition

    Fuel used
    BP Ultimate 98RON

    Intake:
    short pipe and pod filter on AFM

    Exhaust:
    4-2-1 extractors
    2" press bent exhaust
    hotdog style resonator
    Redback muffler

    Driveline:
    W58 5-speed
    T-series open diff, 4.11:1 gears
    Exedy HD clutch
    ...... butt scratcher?!


  2. #2
    now with 7m powaz Automotive Encyclopaedia hosking1991's Avatar
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    Default Re: xR - Series Engine Variants

    (taken from glytchs members ride thanks luke)





    Engine model and generation:
    18R-C
    Removed emission controls
    removed fan, conpressors, etc
    custom high-density 2-core radiator
    Electric 12" fan

    Top End Modifications:

    Bottom end modifications:

    Forced induction:

    Management:

    Fuel used

    Intake:
    Machined inlet manifold
    Weber DGV Carbie.
    Redline Filter.

    Exhaust:
    HM header extractors
    2 1/4" straight through exhaust (1 muffler)

    Driveline:
    Last edited by The Witzl; 19-06-2007 at 01:40 PM. Reason: applying the correct format and removing discussion.

  3. #3
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: xR - Series Engine Variants



    Engine model and generation:
    18R-GE

    Top End Modifications:
    88253 head with injector reliefs cut.
    EGR removed and blocked off.

    Bottom end modifications:
    9.7:1 pistons, 0.5mm oversize
    balanced bottom end

    Forced induction:
    none.

    Management:
    Megasquirt-2 ECU, V2.687t4 code
    Direct coil control, Bosch MEC 718 coil
    Electronic dissy lock-welded, VR ignition signal to MS-2
    Innovate LC-1 wideband oxygen sensor

    Fuel used
    BP Ultimate 98RON

    Intake:
    pod filter, oil catch can

    Exhaust:
    4-2-1 extractors
    2" press bent exhaust
    hotdog style resonator
    Redback muffler

    Driveline:
    W58 5-speed
    T-series open diff, 4.11:1 gears
    Exedy HD clutch
    ...... butt scratcher?!


  4. #4
    Gangnam style Automotive Encyclopaedia beatle's Avatar
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    Default Re: xR - Series Engine Variants



    Engine model and generation:
    21R-c 1981 RA60
    removed all emissions control including EGR and air pump
    removed Air con completely
    Top End Modifications:
    nil
    Bottom end modifications:
    nil
    Forced induction:
    nil
    Management:
    factory carby, timing increased, some fuel pulled
    Fuel used
    premium 95
    Intake:
    factory carby.

    Exhaust:
    stock bar muffler cut out replaced with straigt pipe plus hole
    Driveline:
    W57, open centre T diff

  5. #5
    Resident Mitsu-whore Backyard Mechanic
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    Oct 2008
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    Default Re: xR - Series Engine Variants

    Engine model and generation:
    18R-C 1978 RT118
    removed emissions gear, blocked off EGR
    Top End Modifications:
    Shaved and ported head, Crow hi-torque cam
    Bottom end modifications:
    40thou overbore, 9.5:1 compression
    Forced induction:
    none
    Management:
    34ADM Weber carby, rebuilt dizzy with 22RE electronic internals
    Fuel used
    premium 95 with 102 octane booster
    Intake:
    34ADM Weber carby, remote air filter assembly from a nissan nomad, Drift pod filter
    Exhaust:
    4-2-1 extractors, 2.25in mandrel bent straight through exhaust (redback muffler)
    Driveline:
    W40, welded T-series diff

    This setup from memory made somewhere around 90RWHP. i'll post up the dyno sheet as soon as i find it

  6. #6
    Toymods Net Nazi Too Much Toyota river's Avatar
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    Default Re: xR - Series Engine Variants

    Hi,

    18R-GTE.....



    Rebuilt 18R-GUE (270 head), with forged pistons (8.5:1), stock cams, stock head gasket, SARD 700cc injectors, GT25 turbo, Autronics EM4, and running 12lb of boost.

    This is the dyno from the initial tuning. When she's run in she will get re-tuned.

    seeyuzz
    river
    The thinking man's clown and the drinking woman's sex symbol
    RA25GT - There is no substitute | 18R-G - Toyota's Dependable Masterpiece
    Toymods Car Club Treasurer, assistant Historic Plate Registrar & Forums Admin

  7. #7
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: xR - Series Engine Variants

    Reviving a very old thread (and noting all the image links are broken).

    Will post up a sheet once it's tuned properly and the bugs are sorted, but I'll put in words the best result so far:

    18R-GTE (converted from 18R-GUE)
    Megasquirt MS3X computer
    Running semi-sequential with crank angle sensor and coil on plug (1NZ-FE coils)
    Home made turbo manifold and twin entry CT26 (Aus delivered), small intercooler on the front
    Arias 8.5:1 92mm forged pistons, prepped factory rods, factory crank, line bored and balanced
    4.4kg Fidanza aluminium flywheel
    ARP head studs (Mitsubishi Astron), rod bolts, crank studs and flywheel bolts
    Home made extended sump with turbo return wing and flapgate baffle
    Turbosmart FPR and VL fuel pump (Bosch 070)
    Mitsubishi 4G63 turbo 450cc injectors, soon to be 510cc units
    Cometic 92mm headgasket
    Two thermo fans, one 12", one 10" with JAR radiator
    Stock 88270 cams, stainless oversized valves, and home ported head

    Xtreme cushion button clutch, W58 gearbox and 3.73:1 T series TRD LSD to 225/50R16 Kumho KU36 semi slicks round off the drivetrain.

    The figures? At the moment, running 8psi boost, and only managing 4500rpm before a fuelling issue, I'm getting 155rwhp, or about 245N.m of torque. From 2000rpm to 4500rpm the torque appears very flat.

    Dyno chart once I have it revving properly at the desired 16psi boost.
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  8. #8
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: xR - Series Engine Variants

    G'day,

    18R-GTE.....



    Rebuilt 18R-GUE (270 head), with forged 92mm pistons (8.5:1), stock cams, Cometic MLS head gasket, Mitsubishi (ND) 550cc injectors, CT26 turbo, Megasquirt MS3X, and running 13lb of boost.

    The turbo seems to be somewhat shagged, so will try again after the RA23 and MS83 are done and I get a GTX28 or 30 and some lumpier bump sticks...

    seeyuzz
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  9. #9
    Forum Member
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    Default Re: xR - Series Engine Variants

    Not sure if this is where the engine should be sitting given that everyone's links are dead

    Stock 9.7 comp pistons, 88253 head. Back on the road after a rebuild in July. Twin 40mm solex.


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