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Would it be smart to regear?

Discussion in '4 Cylinder' started by eclipse22, May 22, 2012.

  1. May 22, 2012 at 4:07 PM
    #1
    eclipse22

    eclipse22 [OP] Well-Known Member

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    So here is what we have
    2006 Tacoma 2.7 4cyl Auto SR5
    w/ fat bobs lift and 31" tires

    So my speedo is obviously off by 12%, but now the issue is with fuel economy, the truck is kinda gutless which doesnt bug me its what i wanted and what i have. Anyways the current gears are 3.58 or something like that, but 4.10 wold bring it back to stock setting. Now here is the question; I do alot of highway driving and I want to know what is more profitable? Do i work the engine harder with those gears on the hwy? At 70mph I am about 1900rpm, but with taller gears I would obviously have higher rpms but it would be easier on the motor. Being a 4 cyl would it be better to have 4.10 or keep my current gears?
    Hope I explained this well enough, any feedback would be greatly appreciated.
     
  2. May 22, 2012 at 5:10 PM
    #2
    2TRunner

    2TRunner Don't give up here just yet

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    For reals though, 31's and the 4.10's would be good.

    30's on 3.58 myself. Not to horrible other than the slug thing...
     
  3. May 23, 2012 at 5:23 AM
    #3
    knucklehead

    knucklehead Well-Known Member

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    If you had a manual transmission, I would be on the fence between 3.7 and 4.1 (depending on hauling needs). The automatic has a higher overdrive ratio though, so I say definitely 4.1.
     
  4. May 24, 2012 at 7:04 AM
    #4
    eclipse22

    eclipse22 [OP] Well-Known Member

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    So what is there to say about my fuel economy for hwy better or same as it would be wheb the truck was with stock wheel diameter
     
  5. May 29, 2012 at 4:31 PM
    #5
    4banger09

    4banger09 Well-Known Member

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    I have the same question really, also what's the cost with doing this? I usually run at 100 km/h on the highway and am roughly 2200rpm, also have 265/75/16 tires. I hold my head in shame when I get passed by a Prius on the highway going uphill :(:( manual tranny as well
     
  6. May 29, 2012 at 4:42 PM
    #6
    Johns Taco

    Johns Taco I'm not 4x4, and have an open diff. So i'm 4x1

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    I'm in the same boat OP, I want to regear to get some lost power back. I'm sure the MPG's would get better but they will never be the same as stock, and re-gearing would take like 7 years to get your return on investment as far as fuel savings. Hope this helps.
     
  7. May 30, 2012 at 5:23 PM
    #7
    maxpower29

    maxpower29 Well-Known Member

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    lol your not driving a truck for speed so it dont matter BAH
     
  8. May 30, 2012 at 5:25 PM
    #8
    bjmoose

    bjmoose Bullwinkle J. Moose

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    Regear for feel and power if you want.

    But regearing is expensive and even though you might recover a little mileage, you'll never get the money back in gas.
     
  9. May 31, 2012 at 7:37 AM
    #9
    eclipse22

    eclipse22 [OP] Well-Known Member

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    So milage would be the same ur saying but i would regain performance?
     
  10. May 31, 2012 at 7:47 AM
    #10
    Cowboyz

    Cowboyz Membor

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    Im running 35s with the V6 and im like11.5-12% off as well. I want to reagear to get power back not really for gas mileage. your going to loose MPGs on the freeway, but you will probably be able to hold your speed better in the higher gears.
     
  11. May 31, 2012 at 1:14 PM
    #11
    bjmoose

    bjmoose Bullwinkle J. Moose

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    I'm saying you probably get a bit of mileage back for around town driving, but never enough to pay for the regearing.

    And at full freeway speeds - it's probably a push.
     
  12. Aug 17, 2012 at 4:52 PM
    #12
    nhurt

    nhurt Well-Known Member

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    I have a 4banger manual trans with 33"s and regeared to 4.56. night and day difference from stock gearing. go for it!
     
  13. Aug 17, 2012 at 5:02 PM
    #13
    worthywads

    worthywads Well-Known Member

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    ^ How's the mpg with the 4.56? Clearly the 4.56 gonna help the get-up-and-go, but seems the question includes the mpg trade off.
     
  14. Aug 18, 2012 at 6:41 PM
    #14
    river rat

    river rat Tool Geek

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    Hmmm. The 4 speed auto may need help in my opinion.
    On gentle hills at say 70 mph, my auto struggles (4 speed auto and 2.7 liter standard cab) and fights to keep in 4th until you punch it pretty good, then she'll accelerate up the hill until you are at speed again. Then you let up to keep from going too fast...no matter how gently I let up, it climbs into 4th ASAP and the speed drops again. It on and off up the hills unless I constantly manually drop into third for most every hill...annoying. I though about redoing the rear end just for this. I think the 4 speed auto needs different shift points somehow for use with the 2.7 RPM power range.
    I hope this was not off topic, but even on the road, it maybe could use a different ratio.
     
  15. Aug 19, 2012 at 10:00 AM
    #15
    bajatrailrider

    bajatrailrider Bajatrailrider

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    My 2012 4dr,auto,2.7, 4.10 gear.(stock tires for now) is way to high geared.I have to drop if it down to third gear.Before every hill,but then it will pull 80.Only down hill or flat highway 4th gear works.Most of driving is mountains.So I would like to go to 4.56 gears,265 or 285 tires.Anybody use this set up?As far as cost labor here is cheap,what is cost on parts.What is best brand parts to buy.?
     
  16. Aug 20, 2012 at 8:25 PM
    #16
    Forster46

    Forster46 Very nice how much?

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    What does the 06 manual 4 banger come with stock for gears? I'm gonna try to find some to get swapped in but can't remember what my trucks got stock.
     
  17. Aug 20, 2012 at 9:07 PM
    #17
    bjmoose

    bjmoose Bullwinkle J. Moose

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    4x4 or 5 lug?
     
  18. Aug 21, 2012 at 1:08 PM
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    Forster46

    Forster46 Very nice how much?

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  19. Aug 21, 2012 at 5:26 PM
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    worthywads

    worthywads Well-Known Member

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  20. Aug 21, 2012 at 5:30 PM
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    blake5995

    blake5995 Well-Known Member

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    i have 31 inch tires and a 2.7L manual and i went with the 4.10 gears and i love it
     
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