Quaife ATB diff - will it kill my driveshafts

Alex · January 28, 2009, 07:21:45 PM

I've sorted myself out with a Quaife ATB diff today, which I'm very happy about!

One thing worries me though, I'm still running GT driveshafts.

Have I just bought myself a one way ticket to a snapped driveshaft?

giorgio · January 28, 2009, 07:30:27 PM

I have to check ETKA but I think GT shaft are same as normal polos.

More importantly the inner CVs are the same. My G chewed through one of these in about 20 seconds [no exaggeration]

That may be more the nature of my clutch so you may be ok.

Go G40 since the box is coming off

hayesey · January 28, 2009, 07:40:15 PM

have been running LSDs and driveshafts from a non-g40 for years and never snapped one. Where they tend to fail is the same on a g40 shaft and non-g40 shaft anyway which is just before the spline part on the outer end.

Alex · January 28, 2009, 07:42:18 PM

I think I'll try it, fuck it, if I break a driveshaft I'll be as out of pocket as I would be from changing it on spec.

Is anyone making them any more though?

Oh yeah, and what's a standard clutch good for power wise?

lance · January 28, 2009, 07:47:27 PM

i have had mine uprated pick it up next onth ill take photos for you all,
standard clutch should take about 160 bhp.

hayesey · January 28, 2009, 07:59:55 PM

a clutch would be rated more by torque than bhp. I remember Paul Borthwick used to get on just fine with 170bhp on a standard clutch. Just an uprated one will last longer.

Alex · January 28, 2009, 08:09:06 PM

Something else to look into then!

Alex · January 28, 2009, 08:10:16 PM

Sorry, I didn't explain that, I reckon after a cam, headwork and a rolling road remap (all coming up) it'll be around 160bhp. Probably a bit under.

hayesey · January 28, 2009, 08:12:11 PM

yeah I'd probably be happier using something along the lines of a helix organic clutch at that point.

Alex · January 28, 2009, 09:33:56 PM

I had a feeling you were going to say that! Not a massive problem, worth it in the long run too.

Dan · January 28, 2009, 09:47:14 PM

Alex, are these Diffs readily available or availble to order from Quaife ?

Alex · January 28, 2009, 10:33:50 PM

They're in stock, yes.

polo classic · January 29, 2009, 02:41:48 PM

Quote from: hayesey on January 28, 2009, 07:40:15 PM
have been running LSDs and driveshafts from a non-g40 for years and never snapped one. Where they tend to fail is the same on a g40 shaft and non-g40 shaft anyway which is just before the spline part on the outer end.

You must be lucky (or drive like a granny) then, I thought the record with a plate diff was 2 weeks for the stock shafts

hayesey · January 29, 2009, 02:46:45 PM

I don't drive it like a granny at all, I guess I've just been lucky. I've ruined a couple of ATVs and snapped a gemini diff in half but driveshafts have been fine.

hayesey · January 29, 2009, 02:49:06 PM

did all the cup cars have uprated driveshafts then? I thought they were all standard