Super Diffs

Super1302 Officially Full-On Dubber

361 posts · joined Jul 2008 · 1 Feb 2014, 4:24 pm

#982095

how good are 4 spider super diffs, this is fitted in a box I got from a mate who got it done at Dunhams. (Shimmo built).
question also, what are they like under racing conditions, drag or be it circuit.

Cheers

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 1 Feb 2014, 5:20 pm

#982100

traction wise the same, just a lot stronger than 2 spider gear diffs

BiX Veteran Volks Folk

2,499 posts · joined Sep 2002 · 2 Feb 2014, 6:03 pm

#982198

I ran/have one in my gear box. As steve said, no advantage in traction, but should make the box stronger. Combine with a heavy duty side plate and should hold the diff together longer. But if the engine is stock or close and your not flogging it, a super diff may not be needed.

I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!

coletrickle Wolfsburg Wizard

661 posts · joined Apr 2009 · 2 Feb 2014, 9:22 pm

#982220

I had the spidergears seize on their shafts due to burnouts,apparently with the extra cross shaft you loose some of the oiling holes i had dangerous redo the box and i coated everything inside withthe same coating you see on pistion skirts the diff copped it on the shafts,spider gears,the gear thing the fulcrum plates sit in and fulcrum plates.I've an easy 75 k on it now and no sign of nothing bad.The Grouch and Bluey both had issuses with the fulcrum plates and axle spades due to lack of oil(Both cars are low and are hiway haulers)The Grouch got coating on the spades and fulcrum plates,Bluey had modifcations to the diff by dangerous and coated fulcrum plates afaik no probs and matty is a burnout slut!Dave or matty can tell u about the mods,but i think that the coating is a good thing.I think Dave said that wheelspin the traction cause the spidergears to seize om the cross shafts.

Super1302 Officially Full-On Dubber

361 posts · joined Jul 2008 · 3 Feb 2014, 2:54 pm

#982256

I should be right then, hardly any burnouts, should be good for circuit work then?

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 · 3 Feb 2014, 3:15 pm

#982260

coletrickle wrote:apparently with the extra cross shaft you loose some of the oiling holes

They can be modded for extra oiling holes, Dangerous did it with my Super Diff when he fitted it.

coletrickle Wolfsburg Wizard

661 posts · joined Apr 2009 · 3 Feb 2014, 8:27 pm

#982292

Super1302 wrote:I should be right then, hardly any burnouts, should be good for circuit work then?

Just realised my reply is a little missleading,matty busted my superdiff doing burnouts,he had issues with his just doing sustained hi-speed on the hi way I think daimo's was the same cause but not 100% sure on that.sustained hi speed with out the oiling mods was the cause i belive but a call to dave would confirm that.The coating on thepeices i mentioned are justsome extra insurance,hope thats a bit clearer.

Super1302 Officially Full-On Dubber

361 posts · joined Jul 2008 · 4 Feb 2014, 9:56 am

#982325

i'm not sure if the one i have is done, i think dunhams may have done it!
hope so. might have to ring to see what they actually do to them

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 4 Feb 2014, 11:08 am

#982330

I had one for more than 150,000k's...........no mods done to the diff and never had a problem 👍