Jump to content


Photo

IRS Rear Springs


  • Please log in to reply
6 replies to this topic

#1 GMH-01X

GMH-01X

    Never follow the crowd

  • Members
  • PipPipPipPipPip
  • 975 posts
  • Name:Aaron
  • Location:The Shed
  • Car:1977 Hatchback
  • Joined: 26-November 13

Posted 28 June 2020 - 07:12 PM

Hey Guys

What IRS Commodore Rear springs have people used in there Torana

Standard factory, King springs SSL & from what model Commodore

I know Camira springs are used as well but not sure I want to go that low

Cheers Aaron

#2 LXCHEV

LXCHEV

    Lotsa Posts!

  • Members
  • PipPipPipPipPipPip
  • 2,930 posts
  • Name:Brett
  • Location:Melbourne
  • Car:'76 LX - 383 Chev
  • Joined: 08-November 05

Posted 30 June 2020 - 12:39 AM

I ran Commo IRS rear springs in the back of my LX for 20 years. From memory they were VP - stock factory springs. No need to buy lowered or super lows, they’ll slam the rear. I believe Camira are just a touch lower again.

Just note, they won’t stay captive unless you install short throw shocks. I never worried, but if I jacked the car up, with jack stands under the body and then lowered the diff housing, they’d just about fall out - so always needed to locate them again when jacking back up.

They’re also progressive rate and I had incredible launches drag racing with those springs. Unreal stance. Not bad for a $30 set of springs from the wreckers! Plenty of photos from the earlier days in my thread.

#3 Heath

Heath

    I like cars.

  • Members
  • PipPipPipPipPipPipPip
  • 17,083 posts
  • Name:Heath
  • Location:South Eastern Suburbs, Melbourne
  • Joined: 07-November 05
Garage View Garage

Posted 30 June 2020 - 05:02 PM

The ones I had in my old Torana were standard springs from a VQ Statesman rear end (IRS).

 

They were certainly stiff enough to not be matched well to my shocks. If I were to do it again, I'd have more damper going on! Some tighter valved Bilsteins etc.

 

Also, I do not remember them being a progressive rate spring. Are you sure about that Brett? 


Edited by Heath, 30 June 2020 - 05:02 PM.


#4 UCSLE

UCSLE

    Forum Fixture

  • Members
  • PipPipPipPipPip
  • 544 posts
  • Name:troy
  • Location:perth
  • Car:Goggomobil
  • Joined: 23-June 09

Posted 30 June 2020 - 08:27 PM

i got some IRS springs for my my UC and they don't look like they are going to fit  , bought them sight unseen and it turns out they are stock height irs kings springs 

 

afaik you have to modify the stock springs but you can't do the same mod with the aftermarket springs ? . 



#5 GMH-01X

GMH-01X

    Never follow the crowd

  • Members
  • PipPipPipPipPip
  • 975 posts
  • Name:Aaron
  • Location:The Shed
  • Car:1977 Hatchback
  • Joined: 26-November 13

Posted 30 June 2020 - 08:29 PM

I ran Commo IRS rear springs in the back of my LX for 20 years. From memory they were VP - stock factory springs. No need to buy lowered or super lows, they’ll slam the rear. I believe Camira are just a touch lower again.
Just note, they won’t stay captive unless you install short throw shocks. I never worried, but if I jacked the car up, with jack stands under the body and then lowered the diff housing, they’d just about fall out - so always needed to locate them again when jacking back up.
They’re also progressive rate and I had incredible launches drag racing with those springs. Unreal stance. Not bad for a $30 set of springs from the wreckers! Plenty of photos from the earlier days in my thread.


Thanks for your reply Brett, you’ve answered all my questions needed, I will be installing a shorter shock with the set up I’ll have running the IRS springs & funny enough I’m picking up a pair for $40
I did scroll through your build thread to check out the stance of the LXCHEV.... Beautiful car

Cheers Aaron

#6 Heath

Heath

    I like cars.

  • Members
  • PipPipPipPipPipPipPip
  • 17,083 posts
  • Name:Heath
  • Location:South Eastern Suburbs, Melbourne
  • Joined: 07-November 05
Garage View Garage

Posted 01 July 2020 - 01:27 PM

i got some IRS springs for my my UC and they don't look like they are going to fit  , bought them sight unseen and it turns out they are stock height irs kings springs 

 

afaik you have to modify the stock springs but you can't do the same mod with the aftermarket springs ? . 

 

Sounds weird to me. The pigtail shrinks down to a small diameter, and you certainly need to cut the centre out so that it fits around the spigot of the Torana suspension (top and bottom).



#7 LXCHEV

LXCHEV

    Lotsa Posts!

  • Members
  • PipPipPipPipPipPip
  • 2,930 posts
  • Name:Brett
  • Location:Melbourne
  • Car:'76 LX - 383 Chev
  • Joined: 08-November 05

Posted Yesterday, 11:15 PM

Yep spot on Heath - I forgot to mention the mod of trimming them down just enough in order to locate onto the Torana mounts.

And I’m still fairly sure they are progressive rate, but could be wrong. I just had a quick glance at the Kings Springs website, and their ads for VP IRS rears are all listed as progressive rate.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users