Outer Limits 4x4 Board

just wondering if aluminium lift blokes are able to be passed by qld transport. i can get a set cheap but just wondering if there legal.
who has hem in their 4x4 and have their been any probs with them

i sort of know the process in getting it approved as i have a 4x4 currently with approved body lift but theyre made of poly/nylon( red ones). i just want to know if alloy ones are legal.

thanks in advance
jason

My bodylift was approved using aluminium blocks. All the paperwork said metal blocks only, but there's been a number of reports here of Qld Transport approving blocks made of various engineering plastics.

When mine was being inspected I was told engineering plastics are only acceptable if a crush tube is installed. Others have posted that no tube required, somebody else questioned how they would check?

Personally, I'd be happy to use aluminium again.

YMMV.

Scott

just make sure they are as wide as the original mounts

a mate used some aluminium blocks that were about 1 inch diameter and one has pushed through the floor

ive got plastic ones in mine with a metal cruch tube insert, they seem fine

ther 50mm lift x 50mm diameter.
i have plastic (red ones) on my surf and they seem fine, but as said i can get alloy ones cheap so i might chuck a lift under the feroza. unless anyone has had bad a experience with alloy ones or know if the cant be approved

the plastic ones are cheap as

mine cost $112 postaged to me off ebay and bolts were $22 from bunnings

vorno_18 wrote:the plastic ones are cheap as

mine cost $112 postaged to me off ebay and bolts were $22 from bunnings

these are $40 the plastic ones on my surf were $25 each from ontrack 4x4

i had no probs with ally ones on the mq and they where 2nd hand so iam not sure how long they had been under the last truck but no probs and still going strong ive sold it but still see it every now and then

vorno_18 wrote:just make sure they are as wide as the original mounts

a mate used some aluminium blocks that were about 1 inch diameter and one has pushed through the floor

ive got plastic ones in mine with a metal cruch tube insert, they seem fine

Do you have any concerns that the plastic/nurethane will possibly wear quicker than the steel crush tubes and eventually the crush tubes will punch through the floor? Or do you use a steel washer over the top of the block?

Theory is neither alloy or HDPE (Plastic) would wear as the body shouldnt actually move. If it does you have bigger issues than the wear rate


Had alloy for two lifts and plastic before that. No noticable difference.

A crush tube is a sensible requirement but not strictly necessary for any 2" lift. unless the lift is still in there 10 years later (unlikely - probably be in the tip by then) then it's engineering overkill.

Yeah thats a fair enough statement. Cheers.

Of course the body will move, as the chassis flex's it will cause the body to move. I would use alloy/ steel over polyurethane for that reason even if they do last longer than rubber.

Glad this came up, I was about to post the same question. I have spoken to an engineer in Brisbane who advised that the polyeurathane with steel crush tube is ok as is steel but the alloy is too soft.

This is for a 50mm lift for a 1990 rangie.

Cheers Guy

Hobie18 wrote:an engineer in Brisbane advised that the polyeurathane with steel crush tube is ok as is steel but the alloy is too soft.

What sort of alloy? Lead?

When I did mine Qld Transport paperwork stipulated steel or aluminium alloy. I used aluminium, and have no regrets.

Any engineers here able to calculate the compression strength of a 65mm diameter aluminium block? How much force will be required to permanently deform it?

Scott

vorno_18 wrote:the plastic ones are cheap as

mine cost $112 postaged to me off ebay and bolts were $22 from bunnings

Mine cost nothing. I allready had a hole saw


Hmmm, still no pics hey

Ludacris posted my poly-urethane 2" blocks with crush tubes out today, I personally have had concerns about the rubber degrading over time and would have gone alloy if the availablility and cost was similar.
Installing saturday arvo, will have a good look at them when they arrive...
(GQ SWB).

The alloy ones cause a metal fatigue or friction when they rub the body chasis. The blocks I sell come with galvanised crush tubes and are made of polyurethane. They will last a lot longer than 10 years. Queensland transport do not have any issues with them being used. Kits cost $150. 10 blocks and bolts.

LudaCris

Why the facination with alloy if there is any doubt just get some 50mm round bar (steel) and drill out the holes on a lathe? Strong as they come and cost me $45- $50 from metaland