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Thread: Welded Diff
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04-25-2009, 02:22 PM #1
Welded Diff
What exactly is that?
I hear that term a lot with drifters.
Any benefits for it?
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04-26-2009, 01:55 PM #2
Its a cheap way to create a spooled rear -- without the spool. The spider gears are welded up so both wheels drive. When we raced dirt back in the day a lot of guys did this to their cars (we ran a spool). It is absolutely not streetable.
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04-26-2009, 02:31 PM #3
aka a lincoln locker!!!!
take a good ole lincoln welder and weld your side and pinion gears together
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04-27-2009, 11:42 AM #4
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04-27-2009, 11:48 AM #5
The wheels are locked together and there is no slip. As you turn a corner, the outside wheel needs to turn more as it is covering a greater distance. On dirt, or when the rear is broke loose in a slide, this does not matter. On the street, you either break stuff or it simply skids one of the tires in corners.
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04-27-2009, 03:59 PM #6
have you ever drove a solid axle atv? notice how it tears up the grass on the inside tire?? same thing on perma locked axle there is no differentiating going on
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04-27-2009, 04:05 PM #7
I've seen 1 car on the street with a spool gear and I hope to never ride in one. The whole car would jump under the binding while he was pulling out onto the street.
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04-27-2009, 04:48 PM #8
- Join Date
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2001 3.8 Black - sold- 2000 SS Black M6
yeah, with a welded up rear the inside tire would squeel around every turn. it might be something fun to do with your old rear if your getting a new one. once you do it, it wont last long....good for going in a straight line though
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04-27-2009, 05:33 PM #9
If you want a streetable setup, check out a Powertrax Lock-Right for the rear. It has a mechanical engagement that locks the wheels together for straight line performance. In corners, the unit disengages and you can hear an audible "click - click - click". No clutches and no cones -- friend has one in his '70 Dart that is a whole lot of fun. Made by Richmond: http://www.powertrax.com/powertrax/lockright.html
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04-27-2009, 06:17 PM #10
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04-27-2009, 06:44 PM #11
Well I took the car drifting for the hell of it the other day and ran into some problems.
It seems like when I make turns I am only spinning one wheel and the other just rolls. When I do a burnout both wheels spin no problem but making turns it just seems like only one wheel has any power. (I will post a video later) and yes traction control was off. I also have no front sway bar if that makes a difference.
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04-28-2009, 04:41 AM #12
I wouldn't recommend a Powertrax Lock-Right in a drift setup -- probably tear the hell out of the unit eventually. It's best for straight line traction where both wheels are turning the same.
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04-28-2009, 05:18 AM #13
Well I am not looking to get the power trax. I am eventually going to go with a mustang 8.8 rear. But in the mean time wnat to know why when I make turns only 1 wheel spins.
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04-28-2009, 08:46 AM #14
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- Dec 2007
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White- 2001 Z28
Why is only one wheel spinning? Because your either don't have a limited slip, or it's just worn out and not putting any power to the outside rear wheel.
What you want is a limited slip, not a spool. There are different types, all the way to a Locker (which is either all the way open or locked like a spool). Or there are various stages of LSD's like Truetrac, Eaton, Auburn, etc. These days I'm having pretty good luck and durability with the Eaton unit and it's carbon clutches which are much more durable than anything else before.Sam Strano
SCCA National Champion (x6)
SCCA ProSolo Class Champion (x5)
2009 SCCA ProSolo Overall Champion
Owner--Strano Performance Parts
814-849-3450
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04-28-2009, 11:43 AM #15
My car does the same thing, we both have Auburn differentials.
If I take off hard in a straight line, it will lay 2 strips of rubber.
However, if I'm in a turn and I hit the gas, the inside rear tire will break loose and start spinning.
I think its due to the clutch material on the cones wearing out in the diff. If the speed differential is too great (like in a turn) it doesn't have enough friction available to keep both wheels spinning at the same speed.
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04-28-2009, 12:11 PM #16
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04-28-2009, 02:08 PM #17
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04-28-2009, 02:30 PM #18
I can't say for sure whether its normal or not, I haven't owned the car since new, so I don't know.
Its probably not normal though, a limited slip should function as a limited slip regardless of the load variation on each wheel.
Only way to fix it would be to get a new differential. A good choice would be a Detroit TruTrac, which is a very strong unit and won't wear out like an Auburn (clutch type diff) will.
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04-28-2009, 04:05 PM #19
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