Outer Limits 4x4 Board

my current project has been stopped with the g60 mwb shell sitting next to the gq shorty chassis

in order for it to comply i need
A) to get all welds x-rayed
B) do 7 years of mechanical engineering and weld it myself
C) get an engineer to weld it for me

is really stressed as i only really have to do is move a few mounts

any help would be very appreciated as this would have been a very kool build

what does the engineer say to do??, what does it cost to get the x-ray done??
hoppy

another vote for C

C - cut it , stretch it, tack it then get a certified welder to weld it properly
Most enginners are happy if you can provide proof the work was done by a certified welder.

you don't need a engineer to weld them, someone with the right tickets will do , IE a boiler maker or a fitter welder.

I think they are having you on. We built an entire car from scratch with not one x ray and thats in qld. I have had heaps of mounts etc approved that I welded myself. and not sure of g60 age but pre 73 there are no design rules so anything goes

bru21 wrote:I think they are having you on. We built an entire car from scratch with not one x ray and thats in qld. I have had heaps of mounts etc approved that I welded myself. and not sure of g60 age but pre 73 there are no design rules so anything goes

Not sure how you managed that. My blue plater said that all welds on any major chassis mods (e.g. suspension mounts, etc) must be done by a ticketed welder - and that was on a 1968 land rover.

REV_310 - check with your engineer... He would probably require a ticketed welder, not an engineer. Most mechanical engineers I know couldn't weld to save themselves.

A mech eng degree at uni takes 4 years, but you don't learn how to weld, nor finish the degree with any welding accreditation.

A tafe course in welding would be much shorter.

I re read it and noted that its a body swap. In my opinion thats even less reason to need the welds x rayed as its not a serious modification - ie an approved person can approve it. in qld you can get this approved at approved persons - not engineers. $77 will get it passed. don't use engineers, use approved persons.

cheers justin

bru, i dont know for sure if its changed yet but; late last year i was investigating puting a new body on a nissan GU chassis and was told it is going to be a no go soon. so i dont know when the law is changing but they are stopping the body swap as its too easy to get dodgey shit through.

BUT the engineer said all that seperates a custom chassis to an oem chassis is a section of numbers.

the shell is 74 and the chassis is 89ish. its not really a body swap the front will be 5 linked and 7"sus - 2"body tossing up between v8 or diesel 6. but yeah just doing my homework the current progress is for motivation ie my yard is cluttered by 3 rather large pieces

will still be possible to do a body swap but it will involve re registration / approval as an icv. having built an icv - apart from the massive amounts of paperwork there are few limitations. they are so picky about light position etc, but beaming and torsion is just a test and if it passes so be it. we did the lane change and break test and any boosted brake system will pass.

cheers bru

nsw could possibly be different

I've been in NDT for 12 years so I have a bit of knowledge about X-Ray.

If the chassis where you need to cut it is a closed box section, it's not going to be very feasible to inspect it with X-Ray. Its possible, but you won't get a very good result, and it would be very difficult to produce a code compliant radiograph from this kind of part configuration.

If it's a C channel, It can be inspected, but will need to be supported with MPI examination for the doubling plates or any areas unable to examined with X-ray.

However, if it's only mounts and they're fillet welds, the engineer doesn't know what he's talking about. Fillet welds can't be examined with X-Ray and can only really be inspected with MPI, a cheap method. Should be a minimum charge for an NDT lab - $250, or less, and you can weld repair anything they don't like immediately and they'll re inspect it.

IMHO, Engineers use X-ray as a frightener to scare people away from this kind of work. Most engineers have no idea how to request X-ray work, they have no idea what can and can't be inspected with X-Ray and don't know what codes apply (or how to apply them.) The correct code is AS 1554:1 2004 SP, a pretty lenient code.

If it is a buttweld and can be X-rayed, personally, I'd get a qualified welder to weld the job. If you weld it and get it X-Rayed, there's always the possibility it won't pass and you'll have to repair the defect and then have it re X rayed.

You'll be paying a minimum of $350 per visit, more likely $500-600 per visit for an NDT crew to X-Ray it, unless you use a company that can fit a whole chassis in their exposure bay.

I hope this helps a bit to get a sense of what your dealing with. I was told by an engineer that spring plate fillet welds had to be X-Rayed (totally impossible) and when this was pointed out he didn't pursue any other NDT.

Steve.

firstly thank you very much. i was hoping an engineer would come out of the closet. what does NDT stand for. it is c chassis as in two c's interlocked. i will probably be lopping a foor from the rails, shifting a dung back, moving body mounts and maybe moving an engine and gearbox mount.

non destructive testing?

REV_310 wrote:non destructive testing?

not when he is in a Zook

Yep, sorry about that. (Oh, I'm not an engineer, but I have been in NDT for years and do lots of welding.. not a certed welder either though )

NDT= Non desctructive testing

MPI = magnetic particle inspection (also known as "magnafluxing")

If it's 2 interlocking C's, it can't be x-rayed. The procedure will be to cut and weld it, MPI the weld, then fit doubling plates and MPI the plate welding.

If the engineer will pass the whole lot (without any NDT) if welded by a ticketed welder, just get a welder to weld the job,(there's lots of mobile welders available) prep and tack the whole job to the specs of the engineer and get the welder in for one visit - should only a be a couple of hours.

Steve.
Steve.

haha keep in mind i'm 18 assistant secretary of brisbane waters 4wd club and this is what i'm up too so far and also have my daily driver gq patrol. and no i am not a mummy's boy. my parents hate me i mean i take up shite loads of room haha