The making of a diff jig - PROGRESS

[Pube]

whiteline make something they call a traction bracket P/N KTA111 for $165. I think the pic in the web store doesnt seem to be the right one though

[brett_celicacoupe]

wtf is a traction bracket?

link me someone please

[EVOSTi]

but why buy traction brackets when you will be welding new mounts on anyway? its a bandaid solution.

[Big T]

Traction Brackets:



And they go on like this:



But Evosti has a point... if you make the brackets the same way as on his E-series, these are redundant.

Eddie.

[Pube]

At this point I will be making a jig to suit the stock mounts. I have learnt by past experience to stick to the phrase "keep it simple, stupid". Modifying the jig for different mounts and making up different mounts takes time and trial and error. For me the stock mounts will do the job and maybe some time down the track I will install sme bolt-on traction brackets and maybe one day I will finish my car

[Hen]

I'll try and take photos of the diff jig that I used (built by ImprovedAE86). It's very simple and worked well. Diff bolted straight in first go, though I never considered tube warping etc.

And from memory, F series tubing is 75mm diameter. Though it's pretty hazy, plus I think there is a step somewhere along it's length.

Hen

[The Witzl]

Eddie - what did the bolt-on traction brackets cost you?

[SIKTOY]

Pube
How is the progress going on the jig ill need a F series done soon

Ben

[Big T]

About $170AU + shipping from the US. I got them shipped with a whole bunch of other stuff so cant tell how much they'd be on their own. They'd probably weigh around 2-3kg or so.

Eddie - what did the bolt-on traction brackets cost you?

[TA-022]

Pube
How is the progress going on the jig ill need a F series done soon

Ben

Get in line buddy!

[GasedT18]

hummm,

I should have G series diff arriving this weekend - it was a quick purchase - no idea what ratio it is it has TA22 mounts on it & I have a T18 series 2 - roll bar yay. The diff may be too narrow for my use in anycase but I didn't realise that relocating mounts was so expensive - I would have thought it would take a competent welder about 3 hours and even less if I supplied new mounts and did the clean up work or am I way off beam here?

I recall reading on this forum someone mentioning seeing a diff being straightened by being put in a very large press - they said they were amazed at how much the thing flexed.
I have in mind that heating one side of the diff while welding relaxes the metal as well as causing heat expansion and tenison on the other side would induce bowing. Heating the other side or 'ringing' around the axle housings vis-a-vis big butane torch before and after welding would reduce stresses. How it's done in practice I've no idea but if welding new mounts requires staightness checking using specialized tooling and straightening is commonly required then I am staring to see why it might cost what it does.

I'd be delighted if a Toymods member can do this work well and some additional general welding work paid by the hour. The issue of warping the diff housing has to be cleared up though.

David

[SIKTOY]

Get in line buddy!

what happend to all the man love I gave you does that count for nothing

[TA-022]

this is business.. man love comes after

besides me and Pube had man love before you and i did.

[Pube]

haha looks like I might cop some man lovin (yay)! As far as geting the diff straightened, im not sure how that will turn out but after I have done the welding ill try and check for straightness if I can. The actual straightening may have to b done by a professional. Getting mounts swapped by a diff joint can take weeks or more! Im just trying to cut out that process and therefore lower the cost. Many diff joints dont really like taking on these kind of jobs as they chew up man power for minimal profit. They are more interested in straight diff rebuilds, drive in and drive out repairs where they can get the most amount of cash in the least amount of time.

As far as the jig goes, I havent started! Hopefully in the next 2 weeks I should have some progress. Im a bit of a perfectionist so im not going to slap any ordinary jig together. It will take a bit to get right s try and be patient

[Pube]

Here is what I have come up with. So far so good. I will be cutting the old brackets off next week to see if the jig actually works!