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CNC Machined 1GR-FE Exhaust Cam Gears (3° Retard)

Discussion in 'Performance and Tuning' started by JustDSM, Apr 22, 2019.

  1. Jun 22, 2019 at 8:11 PM
    #241
    DiamondW

    DiamondW Stockblocker

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    Thanks for the hard work man! I’ll gladly be the next tester to improve the knock learn!
     
  2. Jun 22, 2019 at 8:12 PM
    #242
    TheFang

    TheFang No Big Deal

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    We need to get these to the masses!
     
  3. Jun 22, 2019 at 8:34 PM
    #243
    BassAckwards

    BassAckwards Well-Known Member

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    Awesome news, nice work
     
    DiamondW and mightytacoman like this.
  4. Jun 23, 2019 at 3:41 AM
    #244
    o0opackersfano0o

    o0opackersfano0o Well-Known Member

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    Are those factory gears or ones from JustDSM ??
     
  5. Jun 23, 2019 at 4:15 AM
    #245
    mightytacoman

    mightytacoman Mighty-known Member

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    Brian Crower stroker kit, Carrillo pistons moly/ceramic coated, BC sportsman rods, arp s2000 head bolts, Darton M.I.D sleeves, Kelford race cams, Magnusson supercharger, hp tuner tuned, 650cc flow matched fuel injectors, CSF radiator, Walbro 255 fuel pump. pulleyboys quick change pulley with 2.3", fpr mod, NST crank, water and alternator pullies, 160° mishimoto thermostat. Puma On-board air, Radflo CDC ext coilovers with 14" 700# springs, extended length rear Radflo shocks with CDC, Dakar leak pack, Brute Force Fab front bumper galvanized and powder coated, DTRL mod, yellow fogs, fog anytime mod, relocated rear differential breather, synthetic fluids, custom airbox, tundra sized intake. 76mm throttle body, secondary air filter removed, Airflow snorkel, 4x innovation sliders powder coated, URD equal length headers, DT y-pipe, Aero-Turbine 2525xl exhaust dumped over axle, seat belt chime disabled, Warn 8000i winch, 1- 20" slim light bar in grill, 42" curved roof light both with custom brackets. Mesh grill, Brute Force Fab rear bumper with extra reverse lights, u bolt flip kit, SS extended brake lines, hockey puck bump stop extension, AT shackle flip kit, Light Racing UCA's, 4crawler 1.5" bodylift. custom built front and mid skid plates, re-geared to 4.56s, windows tinted 25%, Sony stereo, 8" skar sub-woofer, 1000 watt mono amp, retrofit headlights with legal demon eye, Kryptek Marathon seat covers. North Star agm 27f battery, Helo 791 rims, 315/75/r16 Mt/r ARB front air locker
    I installed factory gears with the new 3°R. However I did temporarily install the gears Justin had machined out for us to confirm a nice fitment.
     
    Torspd and DiamondW like this.
  6. Jun 23, 2019 at 5:50 AM
    #246
    o0opackersfano0o

    o0opackersfano0o Well-Known Member

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    Magnuson supercharger, 2.6 quick change pulley, 76mm throttle body, Doug thorley long tubes, urd y pipe, wot box with 2 step, 170 thermostat, airaid intake, urd short throw, djm 3/4
    Just debating on buying new gears or having the JustDSM gears done.
     
  7. Jun 23, 2019 at 8:01 AM
    #247
    JacksonTacoma

    JacksonTacoma Well-Known Member

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    I went with oem gears. An extra $50 is a small price to pay to not worry about the teeth size IMO
     
  8. Jun 23, 2019 at 9:58 AM
    #248
    DiamondW

    DiamondW Stockblocker

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    Same here
     
  9. Jun 23, 2019 at 11:13 AM
    #249
    Torspd

    Torspd Tor-nication

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  10. Jun 23, 2019 at 11:18 AM
    #250
    JustDSM

    JustDSM [OP] Oderint Dum Metuant

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    They show an increased knock threshold. :) Are you familiar with the Knock Feedback and Knock Correct Learn values the ECU uses for knock control?

    Using the same tune, here's what I see that's telling:

    Stock Exhaust Cam Timing:
    PreCam.jpg

    3 Degrees of Exhaust Cam Retard:
    PostCam.jpg

    It should be noted that the apparent knock activity observed is happening at the very high end of the Knock Correct Learn value meaning the truck is in it's most advanced state. Additionaly, the "standard" value for Knock Feedback is -3.0

    (Sorry for the edits..I originally posted the screenshots with some specific filters that did not show the raw data, what is posted above now shows the raw data)
     
    Last edited: Jun 23, 2019
  11. Jun 23, 2019 at 11:30 AM
    #251
    Torspd

    Torspd Tor-nication

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    That's better. Now it is less confusing. Good improvements!
     
  12. Jun 23, 2019 at 11:46 AM
    #252
    ebuyaer2002

    ebuyaer2002 Well-Known Member

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    Am I correct in seeing an extra 3 degrees of ignition timing with the new cam gears? Thats a ton!
     
  13. Jun 23, 2019 at 11:55 AM
    #253
    JustDSM

    JustDSM [OP] Oderint Dum Metuant

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    It's actually a bit more complicated than that.

    Not to get too into it, here's a very brief summary:

    The baseline value in the table above is -3.0 (think of that as 0). A value less than -3.0, that indicates an increased amount of knock activity. Anything with a value greater than -3.0 means it's HAPPY, and wants more.
     
  14. Jun 23, 2019 at 11:59 AM
    #254
    ebuyaer2002

    ebuyaer2002 Well-Known Member

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    Gotcha. I can't wait to do this. Sounds like an improvement across the board. I'm stock, but still want to jump on this wagon.
     
  15. Jun 23, 2019 at 12:00 PM
    #255
    o0opackersfano0o

    o0opackersfano0o Well-Known Member

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    I’ll be buying cam gears in the morning. Can’t wait.
     
    mightytacoman and JustDSM[OP] like this.
  16. Jun 23, 2019 at 12:04 PM
    #256
    DiamondW

    DiamondW Stockblocker

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    I can think of someone’s truck that’s really needs this.







    It’s mine, and I’ve got them on the way!
     
  17. Jun 23, 2019 at 12:21 PM
    #257
    ebuyaer2002

    ebuyaer2002 Well-Known Member

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    Are you going to machine them out yourself?
     
  18. Jun 23, 2019 at 1:36 PM
    #258
    JacksonTacoma

    JacksonTacoma Well-Known Member

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    No I sent them to the amazing @mightytacoman for machining
     
  19. Jun 23, 2019 at 1:41 PM
    #259
    ebuyaer2002

    ebuyaer2002 Well-Known Member

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    If we send you OEM cam gears, How much do you charge to machine new keyway?
     
  20. Jun 23, 2019 at 4:53 PM
    #260
    mightytacoman

    mightytacoman Mighty-known Member

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    Invited you to the message party with the info. First 30(ish) sets will be cheaper or if you already spent money for gears through justdsm. Once enough people are running them with positive reviews, My hope is to put this service on the buy/sell marketplace. Never been a vendor or sold much online so most of my machining and fabrication work is local to central NY residents and businesses. This is me trialing online sales.
     

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