Does anyone know if its legal or not to shorten rear bump stops to increase suspension travel on a lowered vehicle?

Dunno about how legal but my old KE35 went through at least two RWC after I sold it with cut down bump stops.

I'm getting issues with reset leaf springs in the KE36 and HUGE bump stops that I think are overkill.

 

The previous owner removed the helper spring which is probably why I'm having issues.

the engineer I saw had no issue with it (victoria)

i would say as long as no part of the diff hits any part of the body once you've cut the bump stops you should be right.

 

i believe that is all theyre there for, but it may be different in Badelaide.

Yeh as long as you've still got the total overall clearance.

 

This is what the DTEI have to say, this bulletin went out this month.

 

Rubber or other resilient bump stops must be provided where the suspension and/or axle are likely to bottom out or result in the spring being coil bound (i.e. no clearance between coils at full bump.)

 

To me this just says that you need to have bump stops, and they need to be such that they prevent any hard interface. No mention of the minimum height or the legality of moving them, it purely states they are needed and the purpose they serve.

 

I'd go ahead and modify based on that. Legally it seems to be fine.

 

Read This

 

Also tells you about determining your minimum heights, the appropriate use of Lowering Blocks (yep - legal!) AND that you can run any wheel/tyre combo as long as it's within 15mm of design sizes! Mad!

I always thought it was illegal to remove or modify the bump stops

I reckon it doesnt make a diffrence. As long as your within your bump stop clearance limits and no part of the suspension or drive line makes contact with the floorpan at full compression, there shouldnt be an issue.

 

When i bought my KE30 the previous owner flipped the leaves in the rear and had to remove the bump stops. Needless to say i had some wicked imprints in the rails from the top of the u bolts.

Like it says on the DTEI bulletin, (as of October 2009), you need to provide bump stops that prevent bottoming out when you modify the suspension.

i think modifying them by cutting them down is a grey area but replacing them with a shorter one is fine,

most are two hole which can be easily drilled out to fit your hole spacing. a trip to the wreckers would have it

sorted...

I doubt it would be the bumpstops that the police would be worried about, the will just say its defected for being too low, fix it.

Mine went through engineering with cut down bumpstops. I did do it nicely though and reshaped them so they looked like a factory item. As mentioned above, i got knocked back for being too low in the rear rather than the bumpstops......

In Qld the legal anount is 1/3rd, who knows how big they were to start with though!

Did the same as Kangaroosa. Cut then with a hacksaw and then made them look standard shape with a grinder :D

Bumpstops love linishers :D