stronger Constant-velocity joints (cv's) subaru brumdy

the gumbi brumby · Post by **the gumbi brumby** » Sun May 09, 2010 2:44 pm

i have 1990 brumby, lifted on 27's
it had a lot to do with my driving style at the time but i have destroyed 3 rear outer cvs.
im not having any trouble with the shafts i need stronger cups.
any help is appreciated, im thinking either somthing stronger off somthing elce? or a hose clamp around the cup to stop it bananaing
cheers
and a quick vid[youtube]89Sx93E8fMM[/youtube]

Dane · Post by **Dane** » Mon May 10, 2010 6:50 am

I broke one this weekend. Too much grip with new tyres. Cup cracked and died. I'll watch with interest on how you go.

someguy · Post by **someguy** » Mon May 10, 2010 12:40 pm

My outer CV's go quickly too.

But mine don't crack/knock when turning mine knock when going 40km/h or slower in a straight line. (pretty annoying but its an excuse to go fast, sorry officer my car sounds like shit when im driving too slow :P)

knock, knock, knock, knock.

Ordered a new one on ebay which will hopefully turn up soon

2coupedup · Post by **2coupedup** » Mon May 10, 2010 12:47 pm

only cracked one i ever had was front left with L-arm conversion with extra spring lift so big angle... even still it only broke when in front wheel drive and took off too quick so the front wheel bounce effectively broke the bearing cage...

oh and nice vid gumby brumby but i think you need a limo rear or weld it :P then you'll kill those spots when u have no traction at the front end and only 1 rear is spinning...

cheers

the gumbi brumby · Post by **the gumbi brumby** » Mon May 10, 2010 4:58 pm

i have been using drive pro shafts, 150 somthing each from my local drive shaft specialist and he said he cant got anything stronger.
2coupedup, this limo read you speek of, what is it? welding is my next option.
ive worked out why i keep breaking them, its when i flex out, going up hill, 1 rear spins and i either roll back or it comes back to earth, it just bananas the outer. i will get some pics on here soon and more vids

2coupedup · Post by **2coupedup** » Mon May 10, 2010 7:52 pm

limo rear as in if you are lucky enough to score a lsd for the rear in the right ratio for you g\box, i assume 4sp d\r box so probly 3.7 ratio diff...

if you weld the rear diff you have to remove a cv shaft. to prevent binding on road/ hard surfaces...

i want to weld mine but its my daily driver so not practical...

cheers

YouTube · Post by **El_Freddo** » Mon May 10, 2010 9:19 pm

2coupedup wrote: i want to weld mine but its my daily driver so not practical...

I welded mine in my daily driver. The biggest thing to get over is having to get out to put the shaft in to go 4wd'n. The next big thing to get over is where you can get it... stuck.

As for the LSD. If you find one that is not the same diff ratio you can swap out the centre into your current rear diff. There's a thread on here somewhere, think it was written by Andrew_T.

Bugger about the cups shattering - sure your rear diff is hanging low enough so that the shaft isn't on an extreme angle when the wheel is at full drop? That could be the real issue here... I didn't break any shafts while running the welded diff - and I gave it some! It only came out for a trip to the snow...

Cheers

Bennie

tony · Post by **tony** » Tue May 11, 2010 1:12 am

Just be aware that when the cv blows it protects the diff from blowing. like a fuse. I would be reluctant to beef up the rest of the driveline as it is a lot cheaper and easier to fix cvs than diffs.

2coupedup · Post by **2coupedup** » Tue May 11, 2010 6:55 am

good call tony, if only it was the inner joint blowing, much easier to replace...

cheers

the gumbi brumby · Post by **the gumbi brumby** » Tue May 11, 2010 10:45 am

yes i do have the diff hanger at the correct height. my diff hanger bushes are a little sad tho

Morcs · Post by **Morcs** » Sat May 22, 2010 6:34 pm

I made some sleeves that press on around the cv cups out of some steam pipe of similar id as the od of the cvs.

Never had another breakage after that mind you these were in my brumby with rwd only with about 240hp going to rear wheels this was just a tad slippery on every surface in anything under 3rd