Outer Limits 4x4 Board

is it posible to get 4x4 converted from leaf to coils in QLD, and rwc?

Yep.

Nice reply but i think that you shouldnt put that much info in the one post, its hard to digest all the technical specs in the one reading. Is there anyway you can shorten your reply with less information ?

rustynuts wrote:Nice reply but i think that you shouldnt put that much info in the one post, its hard to digest all the technical specs in the one reading. Is there anyway you can shorten your reply with less information ?

A bit more info on what you want would have give a better reply. what fourby have you got. companys like calbah do coil conversion kits for crusier's, hilux's, patty's, f trucks, jeeps.
As long as the suspension set up complies with the DOT you should be laughing.
no more than 1/3 incress in bumpstop hight etc. an engineer will laugh at you if you ask him to approve a crusier with coil conversion sit atop of 6 inch lifted springs.

rustynuts wrote:Nice reply but i think that you shouldnt put that much info in the one post, its hard to digest all the technical specs in the one reading. Is there anyway you can shorten your reply with less information ?

i dont see the issue, he asked a simple question and got a simple answer. He is correct, it is possible to get a RWC (safety certificate) for a coil conversion.

rustynuts wrote:Nice reply but i think that you shouldnt put that much info in the one post, its hard to digest all the technical specs in the one reading. Is there anyway you can shorten your reply with less information ?

yeah its easy, "y" stands for yes or even " " would suggest it is possible

even would do the job

possible, hard but possible. radius arms front or wrangler 3 link thingy they have, on the stadard diffs (of the suspension setup) most of all find mod plater/engineer who has done it before, no one can tell you as much about it as they can.

most important, prior approval. they wont even look at it if you just walk in, mod plates or not.

That implies that someone here has done it within a least the last 1-2 years.

If so, Great !!!

Who are they and who did the work (fabricator and engineer) ??

I have a smurf that I would like to do SAS (bundy coil front) on, agreed I want to go from IFS to SAS coils but if the engineer knows what coil setups require surely it's not that hard.
I have found guys that I think can do the job but no engineers I have spoken to or been recomended to talk to seem to have done it before
I tried talking to Superior engineering and they didn't say "no" but were not keen to do it "you need to find someone who has done it before". Similar responses from others.

I am chasing similar info.

Don't mean to hijack your thread suzicrazy.

balzackracing wrote:no more than 1/3 incress in bumpstop hight etc. an engineer will laugh at you if you ask him to approve a crusier with coil conversion sit atop of 6 inch lifted springs.

True witch means if you have say a 40 series and fit 80 diffs and coils and run the standard springs even though the 4x4 is 150mm higher you are still classed as running standard suspension.

try Lee at Japanese 4x4 Spares & Repairs at Burpengary Ph: (07) 3888 0877

sean calcino on the gold coast i believe has done it. and someone else has too, kevvy knott maybe i cant remember if it is him or even close atm. in queensland no matter what anyone says on here i have just not even a week ago spoken to an engineer who said "diffs must be the SAME not 50mm smaller or larger, if the original car had discs allround this must be kept the same on the new diffs, if discs are being put on back as part of new discs brakes must be upgraded from the drum booster and master aswell.

coils must be standard to the diffs being used in the conversion. the need to use the standard bundera mounts on the radius arms coils and shock mounts will either help or hinder your plans.

find the number for sean calcino and give him a ring, he will either give you all the info you need or will give you the number of someone else who will sort everything out.

i tried to get bundy diffs under my sierra i spoke to seven yes seven engineers and they all said no way in hell unless i was going to pay an engineer/ draftsman to draw my chassis and all the mods calculated spring rates brakes steering angles etc... and ask qld transport for approval and wait for there responce (up to a year wait) $5000 later i could MAYBE have permission to start ???

but three of them would put hilux on the suzuki leaf same diff same brake but different springs go figure.
coil rides so much better but leaf it is.

there is plenty of mods you can do to your leaf to make them work better

if you had a coil sierra you can put bundy diffs in with out to much drama

then again you might find a engineer that will say something different good luck and if you do succeed please pm me as i'll use him too

guys i can't really see the problem ..... you talk about engineers and crap for qld regs ..... of course you need to get it engineered if u are making the links and mounts at home.... but have done a few conversions at home, trick is to use factory mounts, ie chassis trailing arm mounts, trailing arms etc... getting my drift, after this aprt from changing the diffs/mdification to suspension... if you no the code get welds tested and signed off, because they are classed as factory items(as long as the diffs in this case are classed as over engineered ie changing from drum to disk brakes).... remember QLD transport will always give you the runnaround its a government agency .


just my 2c on my own experience

cheers
simon

have a read, very interesting. tell you the do's and donts dont's
this is the national code of practice

http://www.dotars.gov.au/roads/safety/b ... eb2006.pdf

theres a lot of other things on there too.
http://www.dotars.gov.au/roads/safety/b ... _ncop.aspx

thats about as much help as i can give.
cheers duane

Modified Toy wrote:

balzackracing wrote:no more than 1/3 incress in bumpstop hight etc. an engineer will laugh at you if you ask him to approve a crusier with coil conversion sit atop of 6 inch lifted springs.

True witch means if you have say a 40 series and fit 80 diffs and coils and run the standard springs even though the 4x4 is 150mm higher you are still classed as running standard suspension.

why would the car be 150mm taller?

id say it would bve very close to standard.


In QLD it is not possible for an engineer to approve a suspension modification. However, a suspension redesign (which is what going from leafs to coils, or going from one coil spring system to a 5 link or something) is possible and very doable by an engineer.

QLD transport will laugh at you if you try to lift it more than 2"(over standard), and so will most engineers.

muddymav wrote:have a read, very interesting. tell you the do's and donts dont's
this is the national code of practice

http://www.dotars.gov.au/roads/safety/b ... eb2006.pdf

theres a lot of other things on there too.
http://www.dotars.gov.au/roads/safety/b ... _ncop.aspx

thats about as much help as i can give.
cheers duane

dotars are not in effect in QLD yet, and im told wont be for a further 12 months.

Shadow wrote:

muddymav wrote:have a read, very interesting. tell you the do's and donts dont's
this is the national code of practice

http://www.dotars.gov.au/roads/safety/b ... eb2006.pdf

theres a lot of other things on there too.
http://www.dotars.gov.au/roads/safety/b ... _ncop.aspx

thats about as much help as i can give.
cheers duane

dotars are not in effect in QLD yet, and im told wont be for a further 12 months.

Does this mean I need to get moving now , or wait 12 mths ???

it was more a guideline. you build to these specs and you souldnt have a problem as they are adopting these rules and regs. well thats the case in vic anyway. but you shouldnt have a prob as stated above,your merely redesigning the suspension,a mate done it on a 40 shorty, leafs to coils, no drama what so ever. but i guess you live in qld dont you

Dougster wrote:

Shadow wrote:

muddymav wrote:have a read, very interesting. tell you the do's and donts dont's
this is the national code of practice

http://www.dotars.gov.au/roads/safety/b ... eb2006.pdf

theres a lot of other things on there too.
http://www.dotars.gov.au/roads/safety/b ... _ncop.aspx

thats about as much help as i can give.
cheers duane

dotars are not in effect in QLD yet, and im told wont be for a further 12 months.

Does this mean I need to get moving now , or wait 12 mths ???

dotars will more than likely relax some rules in QLD, rather than make them tougher.

Suspension redesign is always going to be possible, as there is a real need for it for commercial reasons.

Shadow wrote:

Modified Toy wrote:

balzackracing wrote:no more than 1/3 incress in bumpstop hight etc. an engineer will laugh at you if you ask him to approve a crusier with coil conversion sit atop of 6 inch lifted springs.

True witch means if you have say a 40 series and fit 80 diffs and coils and run the standard springs even though the 4x4 is 150mm higher you are still classed as running standard suspension.

why would the car be 150mm taller?

id say it would bve very close to standard.


In QLD it is not possible for an engineer to approve a suspension modification. However, a suspension redesign (which is what going from leafs to coils, or going from one coil spring system to a 5 link or something) is possible and very doable by an engineer.

QLD transport will laugh at you if you try to lift it more than 2"(over standard), and so will most engineers.

Thats the point the spring mounts might be fitted in a different way from chassis to chassis or chasiss are different designs witch will adjust ride hight but the point is in nsw you are only allowed to lift a vehicle so far and this way you a lifting a vehicle but you are running standard spring so you are classed as not raising the vehicle...

i had a bundera chassis with diffs and a sierra chassis and the engineers would not let me swap i've seen it done many times but the engineers i found would not budge i gave up in the end.
if any one knows an engineer who would be interested I'd give it a go again because my sierra has no springs or diffs under it as I'm working the spring packs to match the hilux diffs!?

changing from leaf suspension to coil suspension is not the same thing as putting a live axle under an IFS vehicle or swapping in different diffs.

Changing suspension type is using the same diffs, etc just changing your suspension type so I can't see why it wouldn't be achievable even in QLD but the other changes are a whole different thing that don't seem to be applicable in QLD going by all the threads about it.

i think you guys are missing the whole point,........ if you use the diffs, suspension (ie stock coils in this case) factory mounts etc including linkages it can be done in QLD. iam not just talking about mounts

eliteforce32 wrote:i think you guys are missing the whole point,........ if you use the diffs, suspension (ie stock coils in this case) factory mounts etc including linkages it can be done in QLD. iam not just talking about mounts

At the very minimum an approved person would need to mod plate it.

no way around that at all..

Thanks for the informative replies ........ keep em comming

HEY BUD I LUKE - LUKEYS 4X4 CUSTOMS - DO COIL CONVERSIONS ON HILUX`S. IN THE PAST I HAVEN`T HAD ANY PROBLEMS WITH ENGINEERING INCLUDING CHANGING DIFF TYPES ETC. THE NEW RULES AS FROM SEPTEMBER 2006 IN N.S.W WAS THAT ANY VEHCILE RAISED MORE THAN 75MM OVER STANDARD WOULD REQUIRE A SWERVE TEST AT 110KM/H. SOME ENGINEERS SAY NO. THE ENGINEER I USED IN THE LAST 3 MONTHS LOVES WHAT WE DO AND STATES THAT THE METHODS I HAVE USED ARE GREAT. NOT TRYING TO TALK MYSELF UP , BUT AT THE END OF THE DAY THE ENGINEER IS ONE OF THE HARDEST AROUND AND ALL MY BRACKETRY IS CUSTOM MADE. 100% ROAD LEGAL. SURELY QLD REGS AREN`T THAT BAD, CHEERS....

lukes4x4 wrote:SURELY QLD REGS AREN`T THAT BAD, CHEERS....

completely different than NSW or the rest of OZ

yeah finally someone is picking up what im saying .... shadow thats what im getting at

lukes4x4 wrote:HEY BUD I LUKE - LUKEYS 4X4 CUSTOMS - DO COIL CONVERSIONS ON HILUX`S. IN THE PAST I HAVEN`T HAD ANY PROBLEMS WITH ENGINEERING INCLUDING CHANGING DIFF TYPES ETC. THE NEW RULES AS FROM SEPTEMBER 2006 IN N.S.W WAS THAT ANY VEHCILE RAISED MORE THAN 75MM OVER STANDARD WOULD REQUIRE A SWERVE TEST AT 110KM/H. SOME ENGINEERS SAY NO. THE ENGINEER I USED IN THE LAST 3 MONTHS LOVES WHAT WE DO AND STATES THAT THE METHODS I HAVE USED ARE GREAT. NOT TRYING TO TALK MYSELF UP , BUT AT THE END OF THE DAY THE ENGINEER IS ONE OF THE HARDEST AROUND AND ALL MY BRACKETRY IS CUSTOM MADE. 100% ROAD LEGAL. SURELY QLD REGS AREN`T THAT BAD, CHEERS....

Dude, stop shouting (turn caps lock off)

Layto....