Thread: How-to change lower control arms

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  1. #61 Re: How-to change lower control arms 
    SE Level Member fmayo's Avatar
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    Quote Originally Posted by tdm571 View Post
    I was able to cut thru the bolt. I only dulled two blades. The size of the bolt is M14-2.00 90mm. I used a metric 10.9 grade bolt which is the equivalent of a grade 8. I also decided to upgrade the sway bar while I was at it. There's a huge difference in the tightness of the steering. Glad I did it.
    I got lucky with the PB Blaster I guess, the torx bolts came out without too much trouble. I did pick up new bolts before hand though but had trouble finding metric bolts in my area. Ended up using a 9/16" x 4" #8 bolts to replace the torx bolt. Make sure you get some good washers too so the hex head doesn't cut into the aluminum sub-frame.
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  2. #62 Re: How-to change lower control arms 
    GTX Level Member industrialfish's Avatar
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    Quote Originally Posted by dsmuts View Post
    8. Put new lca in place and put the new nut that comes with it on the ball joint.
    Thanks for the write-up. Just wondering if there is any reason to not re-use your factory nuts if they are in good condition? I noticed the OEM nuts are flanged, and the Dorman ones are not.
    2005 GTP - Graystone Metallic|SPO grills&spoiler/SE lip/Carbon Fiber INFERNO hood
    7"
    Spectre|3.4 MPS|42lb Blue Giants+E85+Walbro 450lph pump
    SpeedDaddys|AL605|Vogtlands on FE3s|Vinnie's Spacers on solid lowers|Intense poly uppers|
    Dorman + Addco sway bars|Drilled/slotted rotors|Plasti-dip 17" QP2 at +27 offset
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  3. #63 Re: How-to change lower control arms 
    Never Be A Tim. ILoveAudi's Avatar
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    Quote Originally Posted by industrialfish View Post
    Thanks for the write-up. Just wondering if there is any reason to not re-use your factory nuts if they are in good condition? I noticed the OEM nuts are flanged, and the Dorman ones are not.
    I did not re-use any nuts.
    Edit: There is no reason to
    1998 GTP Coupe - DIY Intake, Stock - 178k miles with rusty weight reduction (sold)
    1998 GTP Sedan - CT turbo kit, billet wheel pt61, s1x blower cam, Iceman stage 3 heads, 90# springs for all the valve floatz, walbro pump, fuel pump rewire *slowest s1x build ever*
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  4. #64 Re: How-to change lower control arms 
    Moderator dsmuts's Avatar
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    No reason other than the old ones like to round off sLightly sometimes
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  5. #65 Re: How-to change lower control arms 
    SE Level Member LouF's Avatar
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    Why isn't there any talk of TTY tightening?
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  6. #66 Re: How-to change lower control arms 
    Moderator dsmuts's Avatar
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    What tty?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  7. #67 Re: How-to change lower control arms 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Because nobody cares about torque to yield bolts??

    I never replace bolts unless this is something like head bolts or something critical.

    SMGPFC Member #1
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  8. #68 Re: How-to change lower control arms 
    SE Level Member LouF's Avatar
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    Yes, was trying to say "never mind", but the server was too busy to log in. I see this isn't critical in this situation. Found out this by looking up replacing a Focus' LCA. Their balljoint stud is held in by clamping friction (no nut), although the video wasn't TTYing that bolt (lol). Thanks.
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  9. #69 Re: How-to change lower control arms 
    SE Level Member LouF's Avatar
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    Torque-to-yield. I'll just link you Wiki.
    https://en.m.wikipedia.org/wiki/Torq...yield_fastener
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  10. #70 Re: How-to change lower control arms 
    Moderator dsmuts's Avatar
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    Yeah none of these are tty
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  11. #71 Re: How-to change lower control arms 
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    bumpin this to say thanks for the write up. i sometimes wonder how much time i would have saved 20-30 years ago if i had the net back then.
    one note- the 21mm wrench makes the job a lot easier. my set skipped 21 but i managed with a cresent but would have been a lot easier with that.
    another note:
    make sure ya have all the tools BEFORE starting the job.
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  12. #72 Re: How-to change lower control arms 
    I can't car too good. SaukRapids's Avatar
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    Helped to know the sizes. Went quicker that way.

    If any of these are TTY bolts, I'd be thoroughly flabbergasted.
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  13. #73 Re: How-to change lower control arms 
    SE Level Member LouF's Avatar
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    Since it was the first I heard of it (especially in suspension parts (Ford)), I was a bit taken. Since, considering clamping force and vibration, I thought it was critical. Now, I think it is important, but not critical, especially considering material inconsistency and thread-hangup.

    After doing one, I think I measured the torque afterwards; I can't clearly remember what happened, but I think it was a few pounds past the torque specification. I don't know why the straight torque (with tolerance) isn't sufficient in these applications -- so, that is my personal summation. Plus, I don't think a gauge is quite necessary - just observation of the angle turned-through.
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  14. #74 Re: How-to change lower control arms 
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    Shouldn't I jack up the lower control arm so the arm is close to where the arm sits when the car is sitting on the ground, and then tighten my control arm bushings?
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  15. #75 Re: How-to change lower control arms 
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    That's the proper way to do it, yes.

    I like to install everything, but wait for the final tightening until it's all together (and ideally supported). But honestly sometimes I have skipped the step to support it before final tightening and so far so good.

    -Bob C.
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  16. Likes mrbreezeet1 liked this post
  17. #76 Re: How-to change lower control arms 
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    Sorry I didn't get a notification.)
    Thanks.
    Good to know it didn't hurt the bushings.
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