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The 5.29 Mega Thread!!

Discussion in '3rd Gen. Tacomas (2016+)' started by JoeCOVA, Jul 6, 2018.

?

What gear oil do you use

  1. 75W-90

    33.9%
  2. 85w-140

    51.2%
  3. Other

    7.4%
  4. 75W-110

    7.4%
  1. Jun 11, 2021 at 5:26 PM
    #3581
    ClassyTacos

    ClassyTacos Wait what.

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    Thank you for sharing, I think my mind is set on the KD tune. Gonna let the gears settle in a little before I get it tuned. I would like to do it right. I'm thinking about doing a dyno run before and after the tune to get legit numbers for my truck. Would be a sweet video for the channel. Time to start looking for a local shop that that has a dyno. Thanks again.
     
  2. Jun 11, 2021 at 5:43 PM
    #3582
    ClassyTacos

    ClassyTacos Wait what.

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    I felt the same as you, there is a ton of info that seems to contradict itself. I went 5.29 currently on 295 70 r17 so just a little larger than a 33. My stop & go driving and highway mpg have increased and my highway rpms are way down under similar conditions for my driving style. I'm in FL, so low country. I would go with 5.29. The large majority of gear charts on the web put the 5.29s on the more power /better towing side for the common sizes we can run on the taco. The pull to always run larger tires will get you at some point. I find it better to be prepared. I will have a follow up/review of the break in video soon of highway before and after the gears but I'm between 800 to 1000 rpms less on the highway.
     
  3. Jun 12, 2021 at 2:00 AM
    #3583
    bluewave

    bluewave Well-Known Member

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    I posted a couple pages back about my Nitro Gears breaking (no warranty) ... so I coughed up the $2500 and replaced the gears and all is well. After spending 5k on gears , Now I have gear failure paranoia.... Is this a real concern or can I expect my gears to last 100k miles. I’m running 35’ KM3’s with Fox Coilovers, SPC.s etc. etc. I’m having some regrets as I never had a repair like this in 3 Tacoma’s I have owned over the years ...resale is good right now, so seriously thinking of selling my truck and starting over and going 285/75/17’s as. I’m thinking 35’s are just not worth it....anyone else had gear nightmares?
     
  4. Jun 12, 2021 at 5:10 AM
    #3584
    JoeCOVA

    JoeCOVA [OP] IG @MightyJoeFlannel

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    35" Trepadors w/ OMF Beadlocks, Kings, OBA, 5.29s etc
    What? Why weren’t they repaired under warranty?
     
    H3llRid3r and Dirk Diggler like this.
  5. Jun 13, 2021 at 9:31 AM
    #3585
    Burmapeak

    Burmapeak Well-Known Member

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    I bought Yukons from ECGS. No issues yet. They are quite. Maybe it’s because I bought the complete units instead of having a shop install just the gears into my stock diffs.
     
    bluewave likes this.
  6. Jun 13, 2021 at 9:43 AM
    #3586
    Burmapeak

    Burmapeak Well-Known Member

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    I installed my 5.29’s than flashed KDMAX 6.0 5.29 33’s. Truck felt pretty much like stock gearing with a tune afterwards. Which really wasn’t a bad thing. Better than super high RPM’s etc. Figured hopefully the difference would show up towing over Mountain passes. Well, what I’ve noticed is the same as someone else posted. Instead of running in 4th with stock gears, it’ll know run in 5th but feel more like a dog. Been tweeking the tune and still haven’t got it dialed in. Towed my boat yesterday (small light 12’ Jon boat).
    200 mile round trip. 500ft elev. up to 5000ft and back down. Pretty crappy on the uphill pulls and pretty crappy on the flats doing 60-65. It’ll sit in 6th and run such low rpm’s that you have to push the throttle farther and farther and farther until it finally shifts back down to 5th and there is still no power until you force it into 4th than the Rpm’s will rev up to 3500+. Got a new tune this morning and we’ll see what happens. Currently really miss the way my truck ran before the 5.29’s but hopefully I’ll get it dialed in before I haul my BIG trailer for Father’s Day weekend. As far as the Yukons from ECGS go, they have so far been very quite. And the experience dealing with ECGS was good.
     
    Stocklocker and MountainManGuy like this.
  7. Jun 13, 2021 at 2:41 PM
    #3587
    Stocklocker

    Stocklocker Well-Known Member

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    It’s one thing about gears not a lot of people understand. The ECU programming will still advance the tranny through the gears until it reaches it’s desired result, which is low RPMs for efficiency, in as high a gear as it can get away with, with the bare minimum torque required by the situation. If that used to be third, now it’s 4th, if that used to be 4th, now it’s 5th, and so on. The only time the gears truly show themselves is getting the truck rolling from a stop, and when you are up in 6th and have run out of gears to shift into.

    In the middle of the range, the truck will be pretty much like stock, unless you tune, or press ECT etc.
     
    clayota likes this.
  8. Jun 13, 2021 at 5:13 PM
    #3588
    Burmapeak

    Burmapeak Well-Known Member

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    Well, I'm geared and tuned and having a heck of a time getting it dialed in but my tuner is awesome so hopefully this week I'll get it as good as I can.
     
    Stocklocker likes this.
  9. Jun 13, 2021 at 5:23 PM
    #3589
    Stocklocker

    Stocklocker Well-Known Member

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    A lot of people seem to reach some happiness with gears and tune. Good luck!
     
  10. Jun 13, 2021 at 9:31 PM
    #3590
    bluewave

    bluewave Well-Known Member

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    JoeCova, I posted about the on this thread https://www.tacomaworld.com/threads/the-5-29-mega-thread.557305/page-164#post-25137850
    Basically Nitro blamed installer error with the side adjusters, while my mechanic claimed the install was perfect… So typical right?? I’m caught in the middle with no one willing to man up on this one. Nitro pretty much said too bad, so sad… . So what the use of a warranty, IMO Nitro just told us, everyone here…how they will treat you if your gears break…
    1CF687F4-116D-4C48-B101-ED75387C3A2D.jpg
     
  11. Jun 13, 2021 at 10:00 PM
    #3591
    bluewave

    bluewave Well-Known Member

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    I am also having some buyer’s remorse for getting 5.29’s . I also worry about gears breaking, as it’s happened once already and no warranty was provided by Nitro….I’ve got KM3 35’s and mileage is about 13mpg…35’s look mean and aggressive and that’s awesome, but there are trade offs…On flat highway I can cruise 70 at approx 2100 rpm.
    I live at 1000 ft elevation so driving uphill every day I cruise 70 at 34-3600 rpm’s… I also use a pedal commander with gives you different levels of acceleration response and less acceleration lag. It’s a pretty good mod IMO.. Prior to the gears I was running 305/70/17’s … Just not sure the gears were worth it in my case…
     
  12. Jun 14, 2021 at 7:55 AM
    #3592
    greymachine

    greymachine Well-Known Member

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    I'm close to pulling the trigger on 5.29s and 35s and it sounds like a tune is pretty much required to make the re-gear worthwhile. Does a tune also remove (or raise) the top speed governor?
     
  13. Jun 14, 2021 at 8:40 AM
    #3593
    MountainManGuy

    MountainManGuy Well-Known Member

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    I go back and forth on this every day. The 35s look mean, but I'm getting 13 mpg around town and maybe 15 highway. What's weird is, I took 2 trips from colorado springs to denver when I had the factory gears and 35s and I averaged 20 mpg on both trips. For some reason my MPG's went way down after switching to 5.29s. Truck does feel better though. Also find the smiles per gallon thing kinda dumb, because I'm sure as hell not smiling when I can't even go 300 miles on a tank of gas. Filled up yesterday and the truck said 265 miles to empty. That's a full tank.
     
    clayota likes this.
  14. Jun 14, 2021 at 11:13 AM
    #3594
    JoeCOVA

    JoeCOVA [OP] IG @MightyJoeFlannel

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    35" Trepadors w/ OMF Beadlocks, Kings, OBA, 5.29s etc
    Tunes aren’t required. The forum just likes them.
     
    PlymouthJLA likes this.
  15. Jun 14, 2021 at 11:40 AM
    #3595
    Maxx

    Maxx Well-Known Member

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    Most tunes will change the top speed and gear ratio values in the ECU. Tunes will not fix your speedometer though, you’ll need a hypertech calibrator for that part.
     
    greymachine likes this.
  16. Jun 14, 2021 at 1:10 PM
    #3596
    MountainManGuy

    MountainManGuy Well-Known Member

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    I've got a hypertech calibrator coming this week. Will report back on how well that works.
     
  17. Jun 14, 2021 at 1:12 PM
    #3597
    greymachine

    greymachine Well-Known Member

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    I got the Hypertech when I installed 285s. Works great (gotta have a PC though, the configuration app won't work on a Mac).
     
  18. Jun 14, 2021 at 1:24 PM
    #3598
    Maxx

    Maxx Well-Known Member

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  19. Jun 19, 2021 at 11:40 PM
    #3599
    tommygs3

    tommygs3 Well-Known Member

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    Fox 2.0 - OV tuned - 5.29 revolution
    Question about the 500miles break in gear fluid change... I'm just wondering what color fluid is suppose to be coming out? Just finish my break in and just change the fluid and it came out slightly grey and metallic shine.. slight metal particles on the drain magnetic... Is this right or should I be worried?? Front and rear fluid looks the same...
     
  20. Jun 20, 2021 at 4:26 AM
    #3600
    ClassyTacos

    ClassyTacos Wait what.

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    Here is what mine looked like in comparison too new and a close up of the drain plug so you see what mine looked like.
    IMG_3945.jpgdrain plug.jpg
     
    SandyTaco4x4 likes this.
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