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Alignment help after lift

Discussion in 'Suspension' started by Double Down, Apr 10, 2013.

  1. Apr 10, 2013 at 4:22 AM
    #1
    Double Down

    Double Down [OP] Member

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    TRD Supercharger, K&N CAI, FOX 2.5 Factory Series Remote Resi F / FOX 2.0 Factory Series Remote Resi R, TC UCA's, ICON Progressive AAL, LEER 100XL Topper
    Hey Guys

    So I just installed a set of FOX 2.5 Factory Series Coil-overs with Remote Reservoirs and set of Total Chaos UCA's on my 12 Access Cab TRD OR. I have BFG TA's 265/7516's mounted on Method Double Standard's with 0mm offset and 4.5" backspace.

    After having the truck aligned, the truck has very sluggish steering. It drives straight in the road, doesn't wander, but it is very hard to initiate tuns.

    In looking at my alignment numbers, it looks like my caster is quite high: 4.2 but it was they best they said they could do. Is this what is causing my steering issue?

    Should I just tell take the truck back to the alignment shop and tell them to aim for caster in the 2.4 to 2.8 range?

    Thanks for the help!

    Edit: I forgot to add that Fox pre-set the coilovers to level the truck, so 2" lift

    alignment.jpg
     
    Last edited: Apr 11, 2013
  2. Apr 10, 2013 at 10:29 AM
    #2
    DevL

    DevL Well-Known Member

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    Your UCA adds 2 deg of caster by moving the uniball rearward. This moves the whole tire rearward as you reduce caster. I'd try to go for 3.0 per side to avoid issues in the future if you get larger tires. If you go 2.5 you will hit a cab mount post chop with a 33" tire. Oh and yes... high caster gives heavy steering... a tendency to stay on center.
     
  3. Apr 10, 2013 at 10:35 AM
    #3
    cjimenRR

    cjimenRR Be Good or Be Good At It

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    Why did he leave the caster specs off? With those control arms he should have been able to get them to specs. Was the eccentric bolt maxed out?
     
  4. Apr 10, 2013 at 12:13 PM
    #4
    Double Down

    Double Down [OP] Member

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    '12 TRD Off Road
    TRD Supercharger, K&N CAI, FOX 2.5 Factory Series Remote Resi F / FOX 2.0 Factory Series Remote Resi R, TC UCA's, ICON Progressive AAL, LEER 100XL Topper
    Thanks for the feedback guys.

    So should I just go back and tell them to aim for 3.0 for caster? I'd love to have the option to throw 285's on at some point.
     
  5. Apr 10, 2013 at 12:42 PM
    #5
    BigHeadTaco

    BigHeadTaco GFY

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    Full OME lift 885's with Dakar leaf springs. LR UCA's. ImMrYo relocation bracket.
    Yes. I had my caster around 3.9 and realigned it closer to 2.7-3.0 range and it is much better. I would have them get your camber closer to 0 as well.
     
  6. Apr 11, 2013 at 10:18 AM
    #6
    DevL

    DevL Well-Known Member

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    Your springs will settle with age. That will reduce camber. Get camber positive but as close as possible to zero. This means 0.1 to 0.2 and your toe is perfect as road force will stretch the toe negative while driving. Toe should be 0.01 to 0.02 positive.
     
  7. Apr 11, 2013 at 10:20 AM
    #7
    medic2230

    medic2230 Ditch Doctor

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    Did you give your suspension time to settle in before the alignment?
     
  8. Apr 12, 2013 at 6:44 AM
    #8
    Double Down

    Double Down [OP] Member

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    TRD Supercharger, K&N CAI, FOX 2.5 Factory Series Remote Resi F / FOX 2.0 Factory Series Remote Resi R, TC UCA's, ICON Progressive AAL, LEER 100XL Topper
    The alignment was done right after the parts were installed.

    How long do I let it settle? A couple days? A week?
     
  9. Apr 13, 2013 at 5:19 AM
    #9
    DevL

    DevL Well-Known Member

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    I waited 2 days. 2.5 degree caster was too little. Went back for 3+ caster a week later and it had already settled by .1 degrees on one side and .2 on the other for camber.
     
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