1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Rear Diff Upgrade Question

Discussion in '4 Cylinder' started by VTDave, Apr 14, 2009.

  1. Apr 14, 2009 at 2:10 PM
    #1
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    From reading other posts, it seems you couldn't get the factory limited-slip differential with the 2.7L engine (2005+ Tacomas). You had to get the V6 and add-on SR5/TRD. I have the 2.7L, but I'd like to have a limited slip on my truck's rear end.

    I haven't heard much about 4cyl guys doing aftermarket diff swaps. So, a couple of questions:

    1. Has anyone done this?

    2. We have the 8.4" rear end, right?

    3. What do you think of this diff?

    http://www.drivetrainspecialists.com/categories/trutrac/products/product-5410.html

    Mainly I'm looking for a diff that will hold-up to a little snowplowing and off-roading, but will have decent street manners.

    Thanks,
    Dave
     
  2. Apr 14, 2009 at 2:11 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,131
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Yes, you have the 8.4", and Yes, thats a good diff. :)
     
  3. Apr 15, 2009 at 7:31 AM
    #3
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    i think i'll be ordering one of those. thanks.
     
  4. Apr 16, 2009 at 6:03 AM
    #4
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    New Mexico Taco: I think you're right with respect to the '08s. I have an '05 and I couldn't find a 2.7L with a limited slip. My method was to look for the "LSD Oil Only" sticker on the underside of all the Tacomas on a given dealer's lot. My informal survey at the time, based upon the underside of ~50 trucks, indicated that you had to get the V6 with SR5/TRD.

    But glad to see that Toyota is giving us more options now.
     
  5. Apr 16, 2009 at 6:34 AM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,131
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    They dont. Some are an open diff.
     
  6. Apr 16, 2009 at 6:47 AM
    #6
    JeffRock

    JeffRock Well-Known Member

    Joined:
    Mar 18, 2009
    Member:
    #14910
    Messages:
    1,198
    Gender:
    Male
    Capital region, NY
    Vehicle:
    09 Tacoma accesscab 4x4 SR5 2.7L
    Toyota all weather floor mats. Mag light that clunks around in the jack compartment. Dog hair. Dog drool on the windows.
    I have a limited slip diff. I would like a diff locker though.
     
  7. Apr 16, 2009 at 7:26 AM
    #7
    Brunes

    Brunes abides.

    Joined:
    May 31, 2008
    Member:
    #7011
    Messages:
    17,641
    Gender:
    Male
    First Name:
    Rotorhead
    DC or New Jersey - Depends on the day....
    Vehicle:
    08 Red/Graphite and Satin Black
    Inside: Tint, Wet Okole 1/2 Piped Red/Black Covers, Black Weathertech Digital Fit Mats, URD Short Throw w/ TWM Weighted Knob, USA Spec iPod adapter. Outside: 4300K Retro w/ Angel Eyes and Red Shrouds, 5000K Blazer Fog Light Retrofit, Debadge, Bed Locking Handle, Satin Black Rims Performance: TRD/Steigmeier Blower w/ 2.7 Pulley. 668 Injectors and 320 LPH AEM Fuel pump. URD UCON and 7th Injector. DTLT Headers, URD Y-Pipe, Wicked Flow Muffler. Suspension: Both: OME Shocks Front: 886X's and TC UCAs Rear: Dakars Armor: Relentless Front Bumper Relentless High Clearance Rear w/ Tire/Rotopax Swing Out Relentless Front, Mid, and TCase skids BAMF Diff Skid Recovery and Spares: Fullsize Spare Tire 2x2 gal Rotopax 1x1 gal Rotopax 1x1 gal Water Rotopax Warn 9.5XP-S Winch Hi-Lift Extreme 60" Ironman Off-Road Recovery Kit
  8. Apr 16, 2009 at 9:52 AM
    #8
    BigRedToy

    BigRedToy ¯\_(ツ)_/¯

    Joined:
    Apr 12, 2009
    Member:
    #15885
    Messages:
    2,045
    Gender:
    Male
    First Name:
    John
    Colorado
    Vehicle:
    07 Regular Cab SR5 4x4
    Also I think the Dana LSD is a mechanical unit where as the Toyota unit uses clutch discs. I would prefer a mechanical unit over a clutch based unit any day.
     
  9. Apr 16, 2009 at 11:29 AM
    #9
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    Big Red Toy: I figure I'll go with the Dana mechanical LSD since the clutch packs in others tend to wear out over ~50-100k mi, slowly turning into an open diff

    NM Taco: Easy way to tell if you have a rear LSD. Get on some smooth pavement. Stop the truck. Floor it. Look back. If you see two black tire marks back there, you probably have LSD. To make sure, try it again a few more times. :)

    Easier method: get under the truck and look for the "LSD Oil" sticker on your rear diff. They put one there so the guys at Jiffy Lube know that you need gear oil with a non-slip additive.
     
  10. Apr 16, 2009 at 11:37 AM
    #10
    SC4333

    SC4333 Well-Known Member

    Joined:
    Dec 9, 2008
    Member:
    #11412
    Messages:
    2,190
    Gender:
    Male
    First Name:
    Grant
    San Antonio, TX
    Vehicle:
    2016 TRD Off-Road 4x4 DCSB - Super White
    SOLD!
    Jack the rear end up off the ground with the truck in neutral. Be sure to block your front wheels for safety and what not. Rotate either wheel forward. If the opposing wheel turns in the opposite direction you have an open differential. If the wheel on the other side turns in the same direction you have a mechanical LSD.
     
  11. Apr 16, 2009 at 12:51 PM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,131
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Normally, I would agree with this, BUT, last summer, I had a frieds truck off the ground, and both tire spun the same direction, and he had an open diff. I theink the best way would be (other than opening it up), Look for the "LS Diff fluid" sticker, or run your vin thru Toyota.
     
  12. Apr 16, 2009 at 4:01 PM
    #12
    SC4333

    SC4333 Well-Known Member

    Joined:
    Dec 9, 2008
    Member:
    #11412
    Messages:
    2,190
    Gender:
    Male
    First Name:
    Grant
    San Antonio, TX
    Vehicle:
    2016 TRD Off-Road 4x4 DCSB - Super White
    SOLD!
    Thats really strange, I have never seen such a thing. It goes against the principle of how an open diff works, although, I am not saying it didn't happen because you witnessed it yourself. Maybe there was some trash caught up in the spider gears?? :confused:

    Did you have the parking break engaged? If so this would be the cause of only one wheel spinning.

    If all else fails, the idea Chris mentioned of checking out the sticker above your fill plug would be a good indication of whether or not you have an LSD.
     
  13. Apr 16, 2009 at 4:47 PM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,131
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    I actually asked if he installed a locker. I had the third member out, and saw that it was, indeed, open. Im thinking it "may" have been due to a thicker oil, but I know there was nothing else in the diff. Now, it IS the only time I have seen that happen, so I just thought I would throw it out there.
     
  14. Apr 17, 2009 at 7:50 AM
    #14
    wawireguy

    wawireguy Well-Known Member

    Joined:
    May 16, 2008
    Member:
    #6686
    Messages:
    189
    Not sure why your wanting to upgrade your diff.. Stock diff should be fine for what you're wanting to do.
     
  15. Apr 17, 2009 at 4:28 PM
    #15
    Brunes

    Brunes abides.

    Joined:
    May 31, 2008
    Member:
    #7011
    Messages:
    17,641
    Gender:
    Male
    First Name:
    Rotorhead
    DC or New Jersey - Depends on the day....
    Vehicle:
    08 Red/Graphite and Satin Black
    Inside: Tint, Wet Okole 1/2 Piped Red/Black Covers, Black Weathertech Digital Fit Mats, URD Short Throw w/ TWM Weighted Knob, USA Spec iPod adapter. Outside: 4300K Retro w/ Angel Eyes and Red Shrouds, 5000K Blazer Fog Light Retrofit, Debadge, Bed Locking Handle, Satin Black Rims Performance: TRD/Steigmeier Blower w/ 2.7 Pulley. 668 Injectors and 320 LPH AEM Fuel pump. URD UCON and 7th Injector. DTLT Headers, URD Y-Pipe, Wicked Flow Muffler. Suspension: Both: OME Shocks Front: 886X's and TC UCAs Rear: Dakars Armor: Relentless Front Bumper Relentless High Clearance Rear w/ Tire/Rotopax Swing Out Relentless Front, Mid, and TCase skids BAMF Diff Skid Recovery and Spares: Fullsize Spare Tire 2x2 gal Rotopax 1x1 gal Rotopax 1x1 gal Water Rotopax Warn 9.5XP-S Winch Hi-Lift Extreme 60" Ironman Off-Road Recovery Kit
    Was that to the OP?? Cause an open diff like he said he has is totally useable for offroad and snow- but the LSD would be much better and a locker might be even better depending on how much and where he is going offroad and plowing...
     
  16. Apr 17, 2009 at 6:05 PM
    #16
    burhead

    burhead Member

    Joined:
    Apr 17, 2009
    Member:
    #16104
    Messages:
    17
    Gender:
    Male
    First Name:
    Craig
    Thunder Bay
    Vehicle:
    2009 Tacoma 2.7 - 4x4
    Timbrens added to suspension Custom made boat racks
    Hey VTDave how did that diff work out I may do just the same thing on my 2009 Tacoma.
     
  17. Apr 20, 2009 at 8:53 AM
    #17
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    The True Trac arrives at my house on Wednesday. It goes in this weekend.

    For the poster who asked why I'm bothering to get one: my driveway is hardpack (dirt/gravel) with some switchbacks and a 17% grade. I'd like to get up in 2WD without tons of wheelspin. Also, for plowing on slippery surfaces, it's nice to have both wheels in back hook-up consistently.

    I'd like to go the air locker route, but that's some serious $$$.
     
  18. Apr 22, 2009 at 5:21 PM
    #18
    wawireguy

    wawireguy Well-Known Member

    Joined:
    May 16, 2008
    Member:
    #6686
    Messages:
    189
    It is so hard to stop. Put it in 4wd and start driving.. My vote is for the ARB! : )
     
  19. Apr 23, 2009 at 9:40 AM
    #19
    burhead

    burhead Member

    Joined:
    Apr 17, 2009
    Member:
    #16104
    Messages:
    17
    Gender:
    Male
    First Name:
    Craig
    Thunder Bay
    Vehicle:
    2009 Tacoma 2.7 - 4x4
    Timbrens added to suspension Custom made boat racks
    where did you find the best price for your new diff????
     
  20. Apr 23, 2009 at 10:15 AM
    #20
    VTDave

    VTDave [OP] Well-Known Member

    Joined:
    Oct 3, 2008
    Member:
    #9658
    Messages:
    193
    Vermont, USA
    Vehicle:
    05 Access Cab 4x4 Base
    I stuck with drivetrainspecialists.com since they patiently answered all my questions and didn't hose me on shipping. Yeah, you could do better on Ebay or Yotatech classifieds, but I decided to give the sale to the people who took the time to tell me everything I needed to know...
     
To Top