Another Bump stop question.. but different

Neogixxer Mar 27, 2018

  1. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    I’ve read and read but haven’t seen anyone ask this question. Ok so the bump stop gap determines the ride quality an what not. You need at least a.5 gap.

    Here’s what I have as far as tire/suspension:
    - Calmini UCA
    - Bilstein Shocks
    - Low profile bump stops
    - 15 rims with 33 BF tires

    My truck is lifted 2in with the suspension plus a body lift with I dunno 2in I guess.

    My question:
    Ok if I reindex my torsion bars but keep my same lift height. With the torsion reindexed , could I come down more on the lift to create more bump gap space for a softer ride??? Like with a 1in or .075 bump gap space ???

    Or I can rephrase the question. More than .5 gap space (1in let’s say) would create a softer ride right?

    I’m asking cause my rig rides like my lower 350z on the road which is ridiculous. The tires are at 40 psi too. Like little tiny pot holes I hit hard.
     
  2. Gen X

    Gen X Bought an X Supporting Member

    Messages:
    61
    Location:
    Ashburn, VA
    I was under my truck yesterday working on tracking down a noise and noticed my bump stops are jammed on my UCAs, absolutely no space. I had work done recently and they must have cranked the torsion bars. But, it rides great. Not what I would have expected. It was a little hard right after getting it back from the shop, but softened. I had new shocks put on so think they just broke in. No idea why my teeth aren't getting rattled on bumps? Unless things get rough, I'm just going to leave it.
     
  3. granitex

    granitex Skid Plates Founding Member

    Messages:
    1,389
    Location:
    Columbus OH
    It is not going to crate a softer ride per say, it is going to eliminate the harshness encountered by hitting the bump stops. Shocks and spring weight are what control the actual harshness, along with the tire choice that you are running.
     
  4. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    ?
     
  5. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    My shocks are new and my low-profile bump stop isn’t OEM, it’s kinda hard and cheap froM Amazon.

    Maybe the heavy duty torsion from 4x4 parts and a OEM bump stop?? I’m not looking for a BMW quality ride but just a less harsh ride
     
  6. Prime

    Prime Some Kind of In Charge? Admin

    Messages:
    33,538
    Location:
    Suffolk, VA
    When you say harsh, does it feel like the suspension jerks when you go over bumps? Or is it just a lot of bounce?
     
  7. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    My bearings are brand new and my shocks are too. It’s harsh as in I’m driving with no suspension on a road filled with potholes

    I’m thinking it’s the bump stops, there hard plastic and they are low profile so I don’t technically have a .5 gap compared to the stock bump stops that are a lot taller.

    It’s a .5 gap from the low profile bump to the UCA. With a OEM bump stop on there, it would be less of a gap if I had it on.
     
  8. SRStaff

    SRStaff Bought an X

    Messages:
    142
    Location:
    Central Alabama
    Oh, yeah, that will ride horrid! You need that 1/2" bumpstop gap from the OEM bumpstop height. All you are doing is slamming on the poly low profile bumpstop. The OEM rubber bumpstop will compress to the same height as the poly low profile bumpstop and be much more tolerable hitting.
     
  9. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Where can I find the OEM bump stop? They are a little harder to find then I thought
     
  10. SRStaff

    SRStaff Bought an X

    Messages:
    142
    Location:
    Central Alabama
    Get the OEM bumpstops from the dealer. The 40psi you are running in your tires is not helping either. Need to drop the pressure some. I bet that dash sounds great chattering every time you hit a pothole.
     
  11. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Oh yah, the dash sounds horrid when I hit a pothole. Haha

    I’m glad I finally have a straight answer about my crap low-profile bump stops and their gap space.

    So I’m gonna re-index the torsion bars, get some OEM bump stops, make my gap space little higher then .5 in, and low my tire pressure to about 35psi.

    Then that should help some with my issue, hopefully, haha
     
  12. SRStaff

    SRStaff Bought an X

    Messages:
    142
    Location:
    Central Alabama
    35psi should be a good pressure to run. Just watch how the tires wear. I run over 1/2" on my OEM bumpstops do to the poorly maintained roads here.
     
  13. Prime

    Prime Some Kind of In Charge? Admin

    Messages:
    33,538
    Location:
    Suffolk, VA
    On tire pressure, you need to chalk test.

    Leave the tires at 40lbs. Draw a chalk line across the tread of the tire. Drive a bit. Look at the wear. If your tires are over inflated, the chalk will be gone in the middle and not on the outside edges of the tread. Remove 2psi and test again. Repeat as necessary until the entire chalk line is gone from each tire.
     
    TheFauxFox likes this.
  14. Neogixxer

    Neogixxer Test Drive

    Messages:
    37
    Location:
    Vegas
    Good tip, thanks guys
     
  15. SRStaff

    SRStaff Bought an X

    Messages:
    142
    Location:
    Central Alabama
    Make sure you get an alignment first. Once you lower your front to get the proper gap for your bumpstops; your alignment will be out of wack and the chalk test is pointless. But what Prime said on the chalk test is on point since all tires are a little different on pressure when it comes to the chalk test along with what weight you have put on the vehicle.
     

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