I think RSman has made the most valid point that it is how you treat it.
 
RS2000, can you comment on your driving style? i.e were your hard launches that broke 12 diffs at the drag strip? and what exactly broke?
 
Out of interest, I have an LSD in mine (so not as much concern re spider gears), pretty light wheels and a very light flywheel/clutch combo (which makes a big difference to the peak torque moment on take off). And i'm mechanically sympathetic, i.e when I do a burnout/launch I don't just dump clutch, I feed it very quickly (burnout) or modulate it into high revs to get me going as quick as possible with minimal wheel spin.
 
Cheers

Quote=evobda2
You cutting down the existing hilux axles up or replacing with new shorter ones e.g. eurospeed?
 
Evobda2, I'm taking the diff to Rodtech, north east of Adelaide .

I personally have not broke a diff centre or axle mainly cause I swap the gears with lsd and fit all new bearings, as well as fitting anti tramp bars (a main cause of breakage).
One thing I have done is bend an axle hitting a curb doing a broady .!

I can vouch for the Mazda B series diff. Have been using one for over 10 years with turbo pinto and now cossie. Always on semi-slicks and never had a single problem with it.
The B1600/1800 is 10mm longer than English axle, so no need to shorten axles and housings, but do need to shorten tailshaft slightly as nose of diff is a bit longer than English and change to Mazda flange/UJ.
Orginally had it hooked up with leafs and upper links, now have converted to 5 link.
A bit heavy (17kg more than english from memory) but same weight as a Borg Warner.
I have pulled centres from everything from the original B1800 to B2200/Bravos and thus have centres from 4.44 to 3.73 which is handy.
I'm not a fan of the BW's due to not being able to easily change the ratio since they are a rear loader.
I must say though, I do wonder how good the semi-floating kits for the English axles are these days - they were a bazillion dollars when I put my Mazda in so didnt consider them - but now they are pretty cheap and would save a lot of weight compared to the Mazda/Hilux/BW options. The other great thing about the new semi floating axles is that some of them have barrel splines on the end so you can wind neg camber in, which would be great for circuit stuff.
 
Ash

Anybody using an ATB LSD?  I've read they are pretty good for street use, and would eliminate the weakest part of the English axle.

Perhaps ask, whats your budget. that might sway you one way or the other. I argue a Hilux is a cheap 350HP capable solution when compared to the English. I argue the Hilux is more convenient than the BW for a race car which may have ratio swaps and regular maintenance
The small penalty you pay for weight is offset by the warm feeling your wallet has still being full!
 
JP

Strangely enough all my cars inc zetec mk1 have a Quaife ATB lsd. My mk2 which had 112kw@tyres has a ATB without a problem and it's been used on street for 14yrs ..I changed the oil every yr . The downside is they dont fully lock at high speed so if in a corner and a wheel lifts,, you will spin the wheel that's off the ground. Upside is wet weather driving is like normal except when you give it large you will swap ends if not ready to catch it. They are also quiet unlike the Ford Motorsport lsd...clunk clunk clunk on slow tight corners.