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How to crank torsion bars

Discussion in 'Chevy Trucks' started by AFM Contracting, Dec 14, 2006.

  1. AFM Contracting

    AFM Contracting Member
    Messages: 92

    how do you crank the torsion bars for some extra lift? any pictures? thanks, also the rear end of my truck is level with the front, whats the best way to fix this? I was thinking of having the springs re-arched.
     
  2. starc

    starc Senior Member
    Messages: 229

    Not usually the best of ideas unless you want to snap the torsion bar. Adding leafs to the back is not usually a problem. Instead of doing that you should have bought the next size up truck. Trying to make a 2500 series into a 3500 series ends up in broken parts as far as the front end goes.
     
  3. millsaps118

    millsaps118 Senior Member
    Messages: 694

    Follow your T-bars back to where they go into the cross member, there will be a 3/4 bolt sitting inside the channel of the cross member directly where the T-bar goes into the torsion key. Turn the bold counter clock wise (in) to raise, clock wise (out) to lower. Repeat on the other side. Make sure you do them equally.

    Simple job, good luck!:drinkup:
     
  4. matt-max

    matt-max Member
    Messages: 55

    and get an alignment afterwards or at least mark where the bolts were and turn them back to that point in the spring or your front tires will be toed in way too much and wear out quickly
     
  5. millsaps118

    millsaps118 Senior Member
    Messages: 694


    matt-max, good point....You shouldn't need an alignment if you do it right.

    AFM--One more thing if you do it, don't turn them in allllll the way. 5-6 turns is about all you want to go. I only turned mine in 3 turns but I have Timberins, when the plow comes off I set them back to where they were.
     
  6. jcesar

    jcesar Senior Member
    from Mi
    Messages: 492

    When you crank them up, Lift the entire front of the truck off the ground. Then use a c clamp to relieve the pressure on the bars. Only turn them 3 to 5 turns, and do it equally.

    Good Luck
     
  7. Detroitdan

    Detroitdan PlowSite.com Addict
    Messages: 1,937

    I think you only need the c-clamp if you are removing the keys. I have a similar truck and I just jacked mine til the front tires cleared then cranked five turns. And I think its clockwise, not counter clockwise. righty-tighty. I got an inch and a half with five turns, holds the plow a little better, and I left it there all summer with no noticeable wear and no alignment. go to FSC.com, off road forums, sticky for torsion bar keys. Ton of good info and a step by step with photos for changing/adjusting keys.
     
  8. 4speed

    4speed Member
    Messages: 93

    Here is a good link that explains any torsion bar questions.
    http://www.offroad-tech.com/tech/tb401/
    This year I removed my timbrens and tossed them in the trash. I put 4 turns on my t. bars and my truck handles my blizzard 800 better than ever.
     
  9. mayhem

    mayhem PlowSite.com Addict
    from Peru MA
    Messages: 1,016

    Mine turned the other way. Lefty loosy, righty tighty.
     
  10. Gicon

    Gicon Senior Member
    from MA
    Messages: 989

    Have you guys ever heard/seen a Torsion Bar Snap. It sounds like a gun shot. It is very very scary. We had one go in one of our H2 Hummer Limousines. The vehicle was a 200" Stretch so it was quite long, and there was a lot of pressure. We had cranked up the torsion bars initially. It was a while afterwards, than it blew out. Game over....
     
  11. millsaps118

    millsaps118 Senior Member
    Messages: 694

    Sorry....your right I got my bearings mixed up, I was picturing it in my head the wrong way.
     
  12. millsaps118

    millsaps118 Senior Member
    Messages: 694


    I've heard of people saying that they will snap like a tooth pick! There's a lot of torque and tension on those little bars so it's not uncommon for that to happen once you start messing around with 'em.
     
  13. diehrd

    diehrd Senior Member
    from NY
    Messages: 199

    Not true at all..The only way to break a TB would be to take the truck jumping in dunes or on pavement..The biggest issue with cranking a TB is the geometry of the front end.
     
  14. businessjeff

    businessjeff Banned
    Messages: 17

    The easiest is to take it to a frame shope and they will probably charg about 80-90 to lift it and for the alingment. If you have someone do it, get it alinged afwards of coars. MOST IMPORANTLY before you crank the sides up evenly measure from the floor to the bottom of the fender flare or something. Whats to say that the tbars were even in the first place. On my 04' chevy they were off by about .5 inch.

    The rear end a few different ways some give u a sitffer ride.
    -Add leafes, can be pricey $100-300
    -Arch springs, need new u-bolts and such $100
    -Make your self some longer shackels, probably the cheapest method $15
    -Block the rear for about $50-60
    *Do the work yourself save you the cash. I.E. bring in your springs to add a leaf or arch them dont let the shop charge you to take them off its way to easy.

    *****!!!!!!!Torch the ubolts dont EVER save them or try and Impact them off. Ubolts are a one time deal never reuse them. Have new ones made for like $20 w/hardware.
     
  15. Antnee77

    Antnee77 PlowSite.com Addict
    from RI
    Messages: 1,056

    Just an FYI, but the 3500 and 2500HD GMT-800 trucks have the same front suspension, provided they both have a snow plow prep package.
     
  16. ABM

    ABM Junior Member
    Messages: 27

    I lift mine up from the plow frame in the front (Boss) and then crank them all the way up... then back them both out a couple of turns. I then take it for a ride and let the front end settle, then park it back on the concrete and measure to the same point on the fender on each side to make sure that it's level... if not I adjust and retest until it is.

    I know that when they installed the plow they had them cranked all the way up and without the plow on it was rough riding and hard to keep it going straight down the road because the suspension didn't have any give.

    In the spring I usually let it down some. I never have had the front end realigned and haven't had any wear issues with the tires.