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IRS vs Solid axle airbag suspension

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by Suspect101, Sep 11, 2019.

  1. Suspect101

    Suspect101 New Member

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    Do either irs or solid axle airbag suspension go lower than the other, my vs ute is solid axle and I heared from a mate that the IRS can basically lay the diff on the ground and solid only goes so far, what do you guys think??
     
  2. vs-lover

    vs-lover Well-Known Member

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    You can't fit IRS into a ute anyway unless you re-engineer the body anchor points.

    Also suspension height is totally governed by the spring height and nothing to do with the actual suspension components fitted.
     
  3. Suspect101

    Suspect101 New Member

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    vs-lover Oh i know that the vu utes are IRS and how would I get the car to lay the diff on the ground for a vs ute with solid axle
     
    Last edited: Sep 11, 2019
  4. _R_J_K_

    _R_J_K_ Well-Known Member

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    Can slam the IRS, but you run into a lot of problems (huge camber wear, bush/alignment/possible CV problems) because of Holden's crappy IRS design and the fact that you're making it so low.
     
  5. Suspect101

    Suspect101 New Member

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    Can I slam it the same height with solid axle?
     
  6. losh1971

    losh1971 Well-Known Member

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    Take the wheels off.
     
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  7. _R_J_K_

    _R_J_K_ Well-Known Member

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    Really doubt it. Without adjustable trailing arms you will also start running into pinion angle issues and axle tramp problems.
     
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  8. Suspect101

    Suspect101 New Member

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    So would i be better off bagging a vu ute with IRS?
     
  9. losh1971

    losh1971 Well-Known Member

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    its a bit unclear what you are actually try to achieve. You will **** the air bags if you go too low. You can probably lower it as far as the bump stops, without getting pinion angle issues. Anything much lower is going to be a **** to drive, because you will be pounded from every slight bump in the road.
     
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  10. woteva

    woteva NEED 4 SPEED

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    Is this what you want ?

    funniest_memes_did-the-alignme-5509814b0f5ec.jpeg
     
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  11. Suspect101

    Suspect101 New Member

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    Trying to get a ute to do this
     
  12. Trevor loves holden.

    Trevor loves holden. Active Member

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    [​IMG]
     
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  13. Skylarking

    Skylarking Well-Known Member

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    @Suspect101, I don’t really understand what you mean by “slam the diff on the ground” when you talk of solid axle. With a solid axle design, the diff is fixed into the same plane as the wheel centres and can’t be altered. So the diff ain’t movin’ in a solid axle design and it’s impossible to lay the diff on the ground. If you want the diff closer to the ground, take off the wheels as @losh1971 stated.

    Depending on how much clearance is above the solid axle diff and how it is connected to the vehicle, you may be limited by how much the body could be dropped. It’s based on the clearance above the diff or the spring height (as @vs-lover sated above) and other mechanical issues.

    You could do lots of engineering work around the solid axle attachment and suspension points and some body work to creat clearance if they are lacking. This would allow the vehicle to lay on the ground but you’ll never be able to lay the diff on the ground with a solid axle, never.

    To me the real question is why would you want to do such butchery anyway? You’ll likely compromise the vehicle integrity and safety and it almost certainly won’t be roadworthy.
     
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  14. Trevor loves holden.

    Trevor loves holden. Active Member

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  15. losh1971

    losh1971 Well-Known Member

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    That makes it clearer, airbags are normally added to increase ride height in a ute when fully loaded.
    What you need firstly is a big sticker on the back window with MANG, written on it and go from there.
     
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  16. losh1971

    losh1971 Well-Known Member

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  17. vs-lover

    vs-lover Well-Known Member

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    and have the Coppers pull you over everytime you set foot on the road, just ask a Silvia owner that's done modifications, they'll certainly give you the good oil.
     
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  18. Deuce

    Deuce Super Stock

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    You are looking at it all wrong skylark. You CAN lay the diff on the ground, you just need to bring the ground up to the diff, not diff down to the ground.
    OP, take your ute off roading and you surely will get the ground on your diff.

    Thank you, glad I could help.
     
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  19. Trevor loves holden.

    Trevor loves holden. Active Member

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    [​IMG][​IMG]See its not hard to lower to the ground, glad I can help too.
     
  20. vs-lover

    vs-lover Well-Known Member

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    Wow !

    one very snapped axle !! That would've been fun being behind the wheel at the time when it happened ?

    Must admit I've put my 2001 2.7 Hilux under more load than that and it handled it with no issues whatsoever and that's a 4 banger.

    Obviously that's how the Hilux got its credibility.............Unbreakable !
     
    Last edited: Sep 12, 2019

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