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Front "Toe-In" - !! SOLVED & IT'S WIERD !!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Greg72, Mar 1, 2002.

  1. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    So I spent some time getting my toe-in set to about 1/8"....previously it was about 1/4" Toe-OUT.

    I still had a very violent pull to the right when I hit the brakes, and I knew it must have something to do with the new (more flexible) springs I'd just installed up front.

    I was thinking "bump steer" or "Too much toe-out or toe-in" but nothing was helping me to find what should have been an OBVIOUS problem to cause such terrible behavior......

    Well I found it!!!! [​IMG]

    There is a little plate bolted behind the rear spring eye on the driver's side. It was put there originally to prevent the stock shackle from rotating TOO far back and allowing the spring to hit the frame. I never paid much attention to it before.....but when I looked at it with the "NEW" springs, there was only about 1/8" of gap between the rear spring eye and this "limiting plate"!!!!!

    My conclusion is that since the springs are a lot more flexible, and about 1" longer than stock, they would hit this plate under braking and prevent the driver's side from nosing-down almost immediately.....HOWEVER, the passenger side does not have this plate, so that side drops a LOT more which allows the axle to shift towards the back of the wheelwell......(effectively creating a Right-Hand Turn due to the axle position!!!!!!)

    WOW! I removed the plate and drove the truck again.....it now runs down the road completely straight, and when I hit the brakes hard.....it stops straight too.....no more diving to the right and causing me to countersteer wildly to keep it in my own lane.....


    PROBLEM SOLVED.


    Thanks for all the help....sorry for the "wild goose chase" but it did force me to set my alignment which I probably should have done anyway! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  2. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    Re: Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    Right on dude! Good to hear you got that all figured out. Now you can come over and do an alignment on my blazer too.[​IMG]

    Sounds like you need a sandwich and a cold beer now.[​IMG][​IMG]

    [Real Men Don't Care About Gas Mileage Or Rapid Tire Wear!]<a target="_blank" href=http://coloradok5.com/gallery/albuo19>
    MY 1972 K/5</a>
    RyanB.
     
  3. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Re: Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    Ryan,

    As we speak I am in front of my computer with a nice big order of "Hot &amp; Spicy Chicken Fried Rice".....Mmmmmmmm

    No beers though.....I ran out of time. I still got some wrenching to do tonight for my "road trip" in the morning!

    [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  4. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Re: Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    Ooooooooooh......"sandwich"......I get it now! [​IMG]

    Sorry it's been a LONG day. Bring me the sandwich and I'll let you take my picture. While you're here I will use my new "alignment jig" on your K5 and get you dialed in.

    Later DOOD! [​IMG]





    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  5. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    Re: Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    9:04 to 9:18... Yup it took you 14 minutes to get that one!
    ...Guess it has been a long day. [​IMG]
    Been sniffing too much of that brake cleaner while degreasing the frame have we?[​IMG]


    [Real Men Don't Care About Gas Mileage Or Rapid Tire Wear!]<a target="_blank" href=http://coloradok5.com/gallery/albuo19>
    MY 1972 K/5</a>
    RyanB.
     
  6. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Re: Front \"Toe-In\" - !! SOLVED & IT\'S WIERD !!!

    I must have missed something. Where did you get the longer springs? Customs?

    Russ

    85 K30 CUCV, 350 TBI, TH400, 205, D60/C14, 4.56 Locked, 4" lift, 42" tires
    Some day: massive cutting, shorter wb and rear overhang.
     
  7. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    Re: Front

    <a target="_blank" href=http://coloradok5.com/forums/showflat.php?Cat=&amp;Board=non4x4&amp;Number=338997&amp;page=0&amp;view=collapsed&amp;sb=5&amp;o=0&amp;part=>BadDog- if you're wondering what you missed, refer to greg's comment on this post. [​IMG] LMAO!</a>

    [Real Men Don't Care About Gas Mileage Or Rapid Tire Wear!]<a target="_blank" href=http://coloradok5.com/gallery/albuo19>
    MY 1972 K/5</a>
    RyanB.
     
  8. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Re: Front

    Thanks. Actually, I was saying that I must have missed how he got longer than stock springs. I just figured the sandwich thing was an "inside joke". [​IMG]

    Russ

    85 K30 CUCV, 350 TBI, TH400, 205, D60/C14, 4.56 Locked, 4" lift, 42" tires
    Some day: massive cutting, shorter wb and rear overhang.
     
  9. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: Front

    There not longer. They are the same length. Need to remember the factory set up the spring is inverted so when the front would dive, the factory set up the rear eye would go forward not back. The stop actully came into play when the suspension was extending.
    Might get the longer spring shackles if you having frame contact. ORD has a beefy set.

    Women dig dents and flat paint!
    coloradok5.com/gallery/Grim
    75 Jimmy, Dollar
    Grim-Reaper
     
  10. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Re: Front

    LOL, BELIEVE me I know that! [​IMG] I was referring to this comment.
    <blockquote><font class="small">In reply to:</font><hr>

    the springs are a lot more flexible, and about 1" longer than stock

    <hr></blockquote> I looked into many different options for longer front springs and couldn't find a good one that didn't involve "mixing and matching till you get it right", significant experimentation and fab (using Ramcharger springs), or lots of $$$ (Alcan, National). That's why I was curious where he got springs "1 inch longer than stock".

    As for as differences in the behavior of arched, flat, and reverse arched springs, I understand that stuff. (In fact, this prompted me to make a new post on my front suspension plans rather than steal this post as I was just in the process of doing before I chopped out the content for the other post [​IMG]).

    Russ

    85 K30 CUCV, 350 TBI, TH400, 205, D60/C14, 4.56 Locked, 4" lift, 42" tires
    Some day: massive cutting, shorter wb and rear overhang.
     
  11. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: Front

    Hmmm maybe he's running a spring from a 73 up on his 72 down truck. I know the part numbers are different. Maybe the 72 down are shorter from the factory.
    I have worked on a buds 72 and noticed those stops. never seen them on a 73 up. He had a set of warn (stiffer than rancho even) spring. I noticed that there were marks where they had hit.
    Maybe people think the springs are longer because of the positive arch verses the stock springs negative arch.
    I gave the shop that sold me my Raunchy's a bunch of grief because while they are supose to be stock length and the center pin is supose to be in the stock location. Well my front axle is back at least 1 inch. I bottom a stock length shaft with 4 inches of lift.

    Women dig dents and flat paint!
    coloradok5.com/gallery/Grim
    75 Jimmy, Dollar
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  12. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Re: Front

    Russ.....

    You're right....I did get custom springs! Check your new thread for the details.......I want to keep you in suspense a while longer! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  13. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Re: Front

    Grimmy,

    Actually they ARE 1" longer than stock.....I had them made that way.....

    I put the story in Russ' new thread called "Custom Front Suspension"...I believe. It's got suspense, drama and intrigue...and a main character whom you already know very well!!! (Not me....someone ELSE!) [​IMG]

    Now that I've hyped it.....you can go check it out!



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     

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