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To TSB or Not to TSB

Discussion in 'Suspension' started by nytro, Oct 17, 2012.

  1. Oct 17, 2012 at 11:08 AM
    #1
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    Hey everyone, Ive been reading this site for the past year trying to avoid posting stupid "what should I do" questions but it looks like I'm going to have to...my apologies, but thanks in advance for your forthcoming words of wisdom.

    Anyways, I've decided to put 5100's all the way around with the front set at 1.75 with the stock coils.

    I'm also going to be adding a LEER shell soon.

    I'm looking to level it, but having some rake is not a bad thing either.
    As it sits right now stock, the rear is exactly 2" higher than the front.

    My question is: Would the TSB rear be enough to achieve this with the weight of the cap, or would an additional AAL be needed?

    The reason I ask is I'm not sure how much everything will settle over time, and if an additional AAL is needed, I would save a step and skip the hassle of going to the dealer and just get the larger AAL. But if the TSB is adequate, I could save the $$ for the AAL and buy something else...
     
  2. Oct 17, 2012 at 11:16 AM
    #2
    Bobbb

    Bobbb "Rumors of Bob, but never Bob. It is Bob, right?"

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    I have an '11 AC (long box) with the TSB springs with 5100's set at 1.75" on stock coils and a Leer 100RCC cap. I had a slight (3/4" IIRC) reverse rake until I got the TSB done. With the new leafs I'm just a bit higher in the rear, but not by much. This is a commercial-grade cap and is heavier than some at around 225 lbs.

    Welcome!
     
  3. Oct 17, 2012 at 11:27 AM
    #3
    T Fades

    T Fades Well-Known Member

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    Satoshi, debadged, rear view mirror bracket, tail gate hose clamps, trimmed mud flaps.
    If your front billies are at 1.75", and no tsb in the back, there is no way the rear should be higher than the front. The front should be a little higher than the back if no TSB.

    Am I right guys?
     
  4. Oct 17, 2012 at 11:29 AM
    #4
    jermoids

    jermoids Well-Known Member

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    5100's all around with the fronts set at 1.75" 1" readylift blocks in the back. antenna X shorty antenna. smittybilt step sides. MKW M19 satin black wheels 17x8.5 plasti dip'd front emblem and hood scoop.
    im thinking that the 5100's at 1.75" is his plan and not on yet.
     
  5. Oct 17, 2012 at 11:34 AM
    #5
    himmie

    himmie Well-Known Member

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    My truck was level with 5100's at 1.75 in the front and no TSB in the back.

    This is what it looked like with that set-up and some weight in the bed:
    [​IMG]
     
  6. Oct 17, 2012 at 11:36 AM
    #6
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    Thanks Bobbb! Great info. Sounds like you're running a very similar set up to what I'm looking to do.

    Theoretically, with a beginning difference of 2" front to back, the rear would still be .25" higher with no TSB. My question is how the weight of a cap will effect this number and if the TSB is enough to keep the rear slightly higher even after things settle.
     
  7. Oct 17, 2012 at 11:52 AM
    #7
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    Correct. They are not on yet.

    Thanks for the pic! I would say that weight is a cap or two....
     
  8. Oct 17, 2012 at 12:00 PM
    #8
    T Fades

    T Fades Well-Known Member

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    Satoshi, debadged, rear view mirror bracket, tail gate hose clamps, trimmed mud flaps.
    Ok good, just confirming.
     
  9. Oct 17, 2012 at 12:04 PM
    #9
    whippersnapper02

    whippersnapper02 Well-Known Member

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    I would skip it for rear leaf springs.
     
  10. Oct 17, 2012 at 3:42 PM
    #10
    Bobbb

    Bobbb "Rumors of Bob, but never Bob. It is Bob, right?"

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    I just went out and re-measured to see if/how much the TSB springs might have settled. IIRC I put them on about six months ago. Measuring to the top of the fender opening dead above the axle I now have 37" in front and 36-3/4" in the rear. I've been hauling some pretty heavy loads this summer as well as about 1500 miles of trailer towing. Something to think about in your decision OP.
     
  11. Oct 17, 2012 at 3:51 PM
    #11
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    Thanks a lot for the info!!! This helps tremendously!
     
  12. Oct 17, 2012 at 3:56 PM
    #12
    Bobbb

    Bobbb "Rumors of Bob, but never Bob. It is Bob, right?"

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    :thumbsup:

    Edit: Just looked through my old posts and see that I did this in February and my front was at 37" and the rear at 37-1/4".
     
  13. Oct 17, 2012 at 9:04 PM
    #13
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    Thanks again Bobbb! Your help is above and beyond...more rep coming your way.
    You've helped me make up my mind.:cheers:
     
  14. Oct 21, 2012 at 8:00 PM
    #14
    GuapOh

    GuapOh Well-Known Member

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    Skid Plate, Hood Protector, Wheel Locks, Snugtop XV, Yakima Rack, Weathertechs, Sick Speed Shifter, Avid Bumper, Avid Sliders, Bilstien 5100's, TSB Spring packs

    This is me.

    Def do the TSB. It should be free on your 2011 unless you drive 50K miles each year.
     
  15. Oct 21, 2012 at 8:10 PM
    #15
    dexterdog

    dexterdog My pee parts itch

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    Just for clarification for any newbie there are multiple TSBs(technical service Bulletin) issued for a model. This thread is referring to the "Harsh Ride" TSB.

    I say get the rear leafs but don't count on them lasting if you plan on hauling or towing heavy loads.
     
  16. Oct 22, 2012 at 8:12 AM
    #16
    ROAD DAWG

    ROAD DAWG Well-Known Member

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    debadged,procomp 7105 wheels,aries bullbar,kc slimlites,big country nerfbars,baja roof rack and light cage,hella 500 black magic,5100's(f/r) @.85,tsb rear,nitto terra grapplers(265-65-17)
    i've been approved for the tsb(4 pak) on my 2010 trd sport,4dr s/b..after looking at some trucks on the local lot,equipted like mine(4 dr,auto trans,2wd),i've noticed that the trucks with the factory 4 pak leafs(2011/2012) sit consistantly 1 in higher in the front than my 2010...could it be that my 2010 has settled or fatigued or is the newer model useing a longer factory spring,i plan on going with the "tsb" and 5100 in the rear straight off the bat and see what that looks like,i suspect that there will be too much rake...i'm not too cool on preloading the fronts(even @.85) and i don't want to go to a 620# spring...i'd like to see how it could develop with 5100 all around(@ 0") with 2011/2012 trd sport coils...i took my measurments from trucks that were equipted exactly like mine...any input would be appreciated!
     
  17. Oct 22, 2012 at 8:36 AM
    #17
    ROAD DAWG

    ROAD DAWG Well-Known Member

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    just got off the phone with local toyota parts at dealership,parts guy said they listed the same spring part# for2010-2012 for my particular truck...how can the difference in front height be accounted for other than spring setteling/fatigue/wear?
     
  18. Oct 23, 2012 at 9:00 PM
    #18
    nytro

    nytro [OP] Active Member

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    Front:Bilsteins 5100 with 884's. Rear: Bilsteins 5100, tsb and AAL.
    So I decided to get the TSB done. (yes, the Harsh ride TSB, thanks for the clarification Dexterdog. Hopefully since this was in the suspension section people didn't mistake this for the Windshield Wind Noise at Highway Speeds TSB...:):). Just kidding. I wrote that in the sarcasm font.)
    Anyways, an interesting result. The rear ride height is unchanged. 22" before with three leaf pack, and 22" after with four leaf pack measured from center of hub to bottom of fender.
    The ride definitely feels tighter, but unfortunately didn't gain any height. Wasn't expecting that as everything I have read pointed to at least a half inch increase.
    Oh well, I'll put the front Billies on and see how it sits and decide from there what more I might need to do to the rear.
     
  19. Oct 23, 2012 at 10:51 PM
    #19
    ROAD DAWG

    ROAD DAWG Well-Known Member

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    debadged,procomp 7105 wheels,aries bullbar,kc slimlites,big country nerfbars,baja roof rack and light cage,hella 500 black magic,5100's(f/r) @.85,tsb rear,nitto terra grapplers(265-65-17)
    i'm still trying to figure out where that "extra 1 in." comes from on the new trucks(2012/13),as opposed to my 2010 trd sport.i did my measurement on level ground(or appeared to be level)from the ground thru verticle hub center to bottom of flare....all of the newer trucks were 1 in higher..hopefully i'll be getting the rear tsb this week when the 5100's come in.
     
  20. Oct 26, 2012 at 7:32 PM
    #20
    ROAD DAWG

    ROAD DAWG Well-Known Member

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    debadged,procomp 7105 wheels,aries bullbar,kc slimlites,big country nerfbars,baja roof rack and light cage,hella 500 black magic,5100's(f/r) @.85,tsb rear,nitto terra grapplers(265-65-17)
    had the rear "tsb" done,along with bilstein 5100's installed at all four corners...my fronts were set at .85,i was concerned that the "tsb would put me too high in the rear,with the .85 setting i'm sitting at basically factory rake.another concerned was ride quality...i didn't want to spend tons of cash on a system that would render my daily driver a pain in the butt to even think about driving.with the 5100's and the 4 leaf pak this truck is a joy to drive,there is no harshness...compared to the 4600's that came on my 2010 trd sport prerunner the difference is like night and day,handles much better,doesn't dive under brakeing...a much more sporting feel all around...the rear feels especially planted and it's not even in the same zip code as "harsh"!my initial impression,after my normal urban route with a good mix of surfaces and 30 miles of interstate is that the bilstein 5100's are far superior to the "blue and yellow" bilsteins that came with the truck!my truck, with 37,000 miles is much more comfortable than it was brand new,and a lot more fun to drive...i'll post pics soon.
     
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