Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Why do people install the shocks like this?

Discussion in 'The Garage' started by TX Mudder, Feb 9, 2003.

  1. TX Mudder

    TX Mudder 1/2 ton status

    Joined:
    Jul 10, 2000
    Posts:
    2,514
    Likes Received:
    0
    Location:
    Houston
    [​IMG]

    Those are the DT 8403's, just like what I am going to put on.
    Why do people put them on upside down?
    I can't figure that out.

    The other thing I can't figure out is:
    Why would they put those long travel shocks on a stock height rig? Look at the leaf springs - those are flat stockers.
    Here's the whole story.

    -- Mike
     
  2. 89K1500Chevy

    89K1500Chevy 1/2 ton status

    Joined:
    Nov 9, 2002
    Posts:
    645
    Likes Received:
    0
    Location:
    Georgia, Fayetteville
  3. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    Those are stock springs after a spring over on a Jeep I think...

    Mounting them upside down helps protect the shock body from getting damaged. A lot of shocks cannot be mounted this way (my RS5000's can't)

    Rene
     
  4. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    >Why do people put them on upside down?

    they are manufacturer-approved to run with the shock body on top or bottom... peeps prolly put them that way so that water/gunk/grime doesnt seep past the seals. Just a guess.

    j
     
  5. beater74

    beater74 1/2 ton status

    Joined:
    May 29, 2001
    Posts:
    1,749
    Likes Received:
    0
    Location:
    atlanta
    who says they are up side down. i got some bilstien 1600 and will be mounted the same way.
     
  6. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    </font><blockquote><font class="small">In reply to:</font><hr />
    who says they are up side down.

    [/ QUOTE ]

    Some shocks are manufactured to be mounted in only configuration. Most of the shocks that inhabit the off-road world are setup to be ran with the shock body on the lower portion while the open end is on top. If a shock is not setup properly according to manufacturer's suggestions, the valving will be F'ed up and your ride will be discombubalated.
     
  7. beater74

    beater74 1/2 ton status

    Joined:
    May 29, 2001
    Posts:
    1,749
    Likes Received:
    0
    Location:
    atlanta
    yes i know all that. what i'm trying to say is many shocks can be mounted either way. just because the body is one the top dosen't mean they are up aide down.
     
  8. ntsqd

    ntsqd 1/2 ton status

    Joined:
    Nov 28, 2002
    Posts:
    3,381
    Likes Received:
    0
    Location:
    So. CA
    Sprung-over Sami. Sami's are the only rig I know of with the caliper mounted in that location.

    Mounting them like that reduces unsprung weight. Something to care about if you're going fast. Something to not worry about if you're going slow.
     
  9. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    Rancho 9000's can be mounted like that, and i mount mine like that to keep junk out of the seals and so that the adjuster is on the top.
     
  10. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

    Joined:
    Jan 21, 2001
    Posts:
    20,716
    Likes Received:
    2
    Location:
    Undisclosed Location
    /forums/images/graemlins/rolleyes.gif /forums/images/graemlins/rolleyes.gif
     
  11. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    those are DTs... if the engys at DT say they are a-ok to mount that way.. its a-ok. lets leave the engineering to the engineers! /forums/images/graemlins/tongue.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/laugh.gif

    j
     
  12. trouble1

    trouble1 1/2 ton status

    Joined:
    Sep 28, 2002
    Posts:
    346
    Likes Received:
    0
    Location:
    travelling, probably lost
    discombubalated.
    I Have not seen that word in a while /forums/images/graemlins/thumb.gif
     
  13. TX Mudder

    TX Mudder 1/2 ton status

    Joined:
    Jul 10, 2000
    Posts:
    2,514
    Likes Received:
    0
    Location:
    Houston
    It's discombobulated.

    I didn't think the DT shocks were made to run either way. I've emailed the tech guys at Doetsch so we'll see what they have to say.
    -- Mike
     
  14. BigBurban350

    BigBurban350 1/2 ton status

    Joined:
    Jun 9, 2002
    Posts:
    711
    Likes Received:
    0
    Location:
    Michigan
    Some shocks are valved to extend quickly for potholes and dampen on the compression stroke. Check with the manufacturer before fliping them over. The shocks would basically be useless when hitting bumbs because the damping effect of the shock will not be there. /forums/images/graemlins/usaflag.gif /forums/images/graemlins/burb.gif /forums/images/graemlins/usaflag.gif
     
  15. jeffro

    jeffro 1/2 ton status

    Joined:
    Jul 2, 2002
    Posts:
    406
    Likes Received:
    0
    Location:
    Scurry, TX
    If they are made to run rod-end-down that's OK. I'd do it to keep the reservoir off of the sbring when that side is drooping. As for the length, it's all about droop.
     
  16. TX Mudder

    TX Mudder 1/2 ton status

    Joined:
    Jul 10, 2000
    Posts:
    2,514
    Likes Received:
    0
    Location:
    Houston
    Doetsch emailed back and said the prerunner line of shocks (which the 8403s are) can be run either way. Well, now i know.
    They can't be valved 50/50 so I still will run mine the right way.
    -- Mike
     
  17. Lonnie

    Lonnie 1/2 ton status

    Joined:
    Dec 5, 2001
    Posts:
    138
    Likes Received:
    0
    Location:
    Pittsburgh, PA
    Mounting the shock in this manner also reduces unsprung weight to improve handling in racing applications. The heavy part of the shock is bolted to the frame leaving less mass on the suspension allowing it to react faster (only the piston &amp; rod move with the suspension). Great for race cars, but I doubt it would make a difference considering most of us run tires/wheels that are about 100+# each. It definitely makes a noticable improvement on motorcycles that use inverted forks.
     
  18. BIGRIG

    BIGRIG 1/2 ton status

    Joined:
    Feb 29, 2000
    Posts:
    488
    Likes Received:
    0
    Location:
    Independence, MO
    Couple diff.reasons.. looks diff., my 9000's are up like that to keep the dials from getting trashed, and helps keep the dirt out of the seals.
     
  19. Greg72

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

    Joined:
    Mar 5, 2001
    Posts:
    15,683
    Likes Received:
    1,392
    Location:
    642 Days to BB2018
    Mike,

    </font><blockquote><font class="small">In reply to:</font><hr />
    They can't be valved 50/50 so I still will run mine the right way.


    [/ QUOTE ]

    Huh? Compression is still compression.....whether the shock is inverted or not, same with rebound.

    The design of the shock may not allow it to run upside down effectively, but if you're talking about a shock that's spec'ed to run either way I think the point is moot.

    /forums/images/graemlins/smile.gif
     

Share This Page