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Thread: Front/Rear suspension/rack full torque specs

  1. #1
    Senior Member Frank818's Avatar
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    Front/Rear suspension/rack full torque specs

    FFR has a page (135 or super close) with rear suspension components torque specs, however it confused me more than anything else.

    For example, it says "Trailing link". What is a trailing link, is it the OEM Trailing Arm (lower) or the FFR Trailing Arm (upper)?
    Says "Lateral link". What is a lateral link, is it the OEM Lateral links (lower), also called "rear toe-link", or the FFR small Lateral link (upper)?
    FFR also changes vocab depending on which page you read. So all in all, it confused me.


    Can anyone help me identify the right specs for each and all of the 12 rear suspension bolts? (There are actually 11 but I skipped #9 due to a mistake. loll )
    Except the shock, as it's obvious on FFR's chart that both bolts are around 45lbs, it says "upper shock" and "lower shock", can't go wrong.


    I have marked the pictures with numbers and FFR specs with letter for cross-matching, but obviously there are some missing, which is possible FFR means "torque to OEM specs", but I still need to identify these.

    FFRRearSuspTorqueSpecs.jpegRearBolts1.jpgRearBolts2.jpgRearBolts3.jpgRearBolts4.jpg
    Last edited by Frank818; 01-11-2016 at 08:19 AM.
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

  2. #2
    Senior Member Frank818's Avatar
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    I'm sure you guys know what you torqued your bolts at?

    After looking in the OEM manual and trying to guess FFR's vocab on pic #1 in previous post, here's what I think the match is:


    1(A)-FFR trailing link to spindle 90Nm, 66ft-lb
    2(B)-FFR trailing link to frame 100Nm, 74ft-lb
    3-OEM trailing arm to frame 115Nm, 85ft-lb
    4,5-OEM lateral links to frame 100Nm, 74ft-lb
    6(D)-FFR upper lateral link to frame 100Nm, 74ft-lb
    7-OEM lateral links to spindle 135Nm, 100ft-lb
    8-OEM trailing arm to spindle 90Nm, 66ft-lb
    10(E)-Upper ball joint bracket to spindle 200Nm, 145ft-lb
    11(C)-FFR upper lateral link to spindle 140Nm, 103ft-lb
    12-OEM strut bolts on spindle 220Nm, 162ft-lb



    Can anyone plz validate if this makes sense?
    I find #11(C) to be a lot, but maybe I am just confused.
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

  3. #3
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    Frank - I have not been able to find anything different than what you noted above, so that is what I am going to follow. If anyone else has a better understanding of the torque specs, please let me know.

  4. #4
    Senior Member Frank818's Avatar
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    For Rear, adding:

    Backplate to spindle 20ft-lbs
    Wilwood Big Caliper kit bolts to spindle 47ft-lbs with Red Loctite



    As an addition, here are the FRONT suspension/rack specs:

    Transverse bushing nut 140ft-lbs
    Transverse bolts to frame 184ft-lbs
    Crossmember bolt to frame 70ft-lbs
    Black transverse pin bolts 114ft-lbs
    Tie-rod end nut to spindle 20ft-lbs
    IFS bracket to spindle upper bolt 129ft-lbs
    IFS bracket to spindle lower bolt 129ft-lbs
    LCA ball joint end to spindle 37ft-lbs

    Backplate to spindle 20ft-lbs
    Wilwood Big Caliper kit bolts to spindle 47ft-lbs with Red Loctite
    A-arms to frame bolts 100-110ft-lbs
    A-arms pivot bolts 60ft-lbs
    A-arm ball joint bracket to spindle 129ft-lbss
    Axle nut to hub 162ft-lbss
    Steering rack to frame 44ft-lbss
    Steering joint to rack 17ft-lbss
    Frank
    818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
    Go-karted Aug 5, 2016 - Then May 19+21, 2017
    Tracked May 27/July 26, 2017
    Build time before being driveable on Sep 27, 2019: over 6000h
    Build Completed Winter 2021

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