VX Rear Bump Stops

[MartyMonaro]

I have recently lowered my 2005 CV8 VX V2 Monaro… I had the springs professionally reset very low. The guards do not rub & it looks great! But the bump stops are fully bottomed out!
Does anyone know where I could purchase some smaller/lower bump stops? These are located on the top of the rear springs.
Thank you!

 

[Aus78Formula]

The bump stops are probably holding the current height, not the springs!

 

[MartyMonaro]

Yip, I’m aware of that! But that’s not my question… I want to know if I can purchase smaller/lower bump stops?
I can’t believe, with the amount of people that lower commodores, that no one produces aftermarket bump stops for lowered cars!

 

[rambunctious]

Hereyago
Maybe some here, have a captain cook.
https://www.bing.com/search?q=lower...C54742B89C2A038E3A6CDCF3&ghsh=0&ghacc=0&ghpl=

 

[MartyMonaro]

Hey, just a bit of an update on the bump stops… so shorter bump stops are not available, & the bump stops are really just ‘covers’ over the steel spring locators.
So I ended up cutting off the lower steel bump stop, machined them down by 15mm, then welded them back in place.
NOTE: The spring isolating pads cover the welds, so the welds can not be seen.
This worked extremely well, & I now have full travel again.
Car rides perfectly & got a WOF with no issues.
Cheers

 

[Immortality]

So are these stock height?

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TBH, I've never measured.

 

[MartyMonaro]

Hey mate, Yeah the SuperPro bump stops measure 60mm high... & as per attached image, my original ones measure about 57mm high.
So the original ones & the SuperPro ones were all made the same height... but I assume my old ones have been squashed down by about 3mm.
So if you purchase the SuperPro ones... it will not help!

Only way I found to fix this... was to cut the bump stops off (bottom ones only!) & make them a bit smaller

I've attached a picture of the rear drive-height
... took a heap of guard rolling & removal of the plastic inner guards etc...
But it does not rub, & drives as smooth as ever!

 

[Immortality]

Thanks for the reply.

 

[Ginger Beer]

Curious, what bottoms out first, the bump stop or the damper

As for the dampers, what are you running?

 

[MartyMonaro]

Hey Mate, The bump stops are still first to 'bottom out'
But I honestly haven't felt it bottom out since I cut the bump stops down
After the bump stops were cut, I tested the 'travel' & with the bump stops touching each other... I still have about 15-20mm travel left in the shock.
To ensure the springs are still captive & enough travel, I purchased & installed: Monroe GT Sport - rear shocks (part number 15-0566)
And Monroe GT Sport - front struts (part number 35-0576 left & 35-0575 right)
The car rides just like the original shocks (not too firm).
And rather than purchasing 'super low springs' I just sent my original springs to 'Archers Auto Springs' (Rotorua NZ)... & they set them to whatever you request.
From memory I lowered the front springs by 45mm & the rear by about 65mm