Different lsd types
#1
Different lsd types
Hi
Do you know if someone makes a better plate type lsd for the Jag diff than the original one. I am looking for the design whitch uses the "cross bolt" withc actuates a angle ramp to press on the discs. The oem type just uses the gears to press the disc pack I think.
Ole Mobeck
Do you know if someone makes a better plate type lsd for the Jag diff than the original one. I am looking for the design whitch uses the "cross bolt" withc actuates a angle ramp to press on the discs. The oem type just uses the gears to press the disc pack I think.
Ole Mobeck
#2
#3
Yes you are right, I see it now when I look again at the drawings. But I would really like to find one that dont push with the gears.
If the cross shaft pushed on the boss between the gears and discpack, and the ramps was on that boss I would be wery happy.
Is that available from someone? This is how ZF,Cusco, xtrac and many other aftermarket motorsport lsd work
Ole Mobeck
If the cross shaft pushed on the boss between the gears and discpack, and the ramps was on that boss I would be wery happy.
Is that available from someone? This is how ZF,Cusco, xtrac and many other aftermarket motorsport lsd work
Ole Mobeck
#5
Found one!!
Jaguar Gripper Diffs
The Quaife and TrueTrac is fine for Street and clubsport, Perfect actually. But for 100% motorsport I prefer a plate type diff With ramps and preload.
Ole Mobeck
Jaguar Gripper Diffs
The Quaife and TrueTrac is fine for Street and clubsport, Perfect actually. But for 100% motorsport I prefer a plate type diff With ramps and preload.
Ole Mobeck
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ronbros (01-13-2015)
#6
My car has a Dana diff, is the Truetrac a direct bolt-in replacement, or are they other things that have to be fixed?
Greg
#8
Found one!!
Jaguar Gripper Diffs
The Quaife and TrueTrac is fine for Street and clubsport, Perfect actually. But for 100% motorsport I prefer a plate type diff With ramps and preload.
Ole Mobeck
Jaguar Gripper Diffs
The Quaife and TrueTrac is fine for Street and clubsport, Perfect actually. But for 100% motorsport I prefer a plate type diff With ramps and preload.
Ole Mobeck
and is mild and would be good for my wife to drive with..
I have not had my wife drive the XJS yet but I have had a little fun with it powering out of curves.... I am hoping she will not be as inclined to press the power on as much as me... I do not want her to be surprised like with the Volvo wagon that time coming off the interstate and doing a nice spin down into the grass of the off ramp loop... I was in the back with the baby in the car seat and tried to talk her through counter steering, excreta then I just told her hands up let her go everything will be just fine.. that Volvo was a little @$$ happy. I solo II'ed it once or twice and one of the road racers came up to me in the pits and said "you were getting a little WIDE there in the slalom" I replied " Yes, but I kept the Front Front and the Back Back ... " then they realized "Yeah..." years ago a 240 DL
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FerrariGuy (12-04-2022)
#9
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upgraded my 1978 JAg XJS Dana 44 diff with 1959-62 Corvette(not 57-58) LSD discs, they actually fit my Dana diff case, difference was thinner plates than Jag, so more plates(more surface area), but one plate was a Bellville spring type! very special LSD lube oil.
also changed to 3.73:1 gear ratio.
of course GM dont know much about things anyway((or maybe they do). seems its Called Dana/Eaton corp.
came out with the 1957 corvette with an LSD, was a very good upgrade!
how do i know, bought new in 57 a Corvette fuel injection,4 speed ,with LSD, HD ceramic brakes,didnt stop for sh%t when cold , but oboy when you got them up to temperature!!
you know thinking back(whew) that car could peg the 145mph speedo, many times.
also changed to 3.73:1 gear ratio.
of course GM dont know much about things anyway((or maybe they do). seems its Called Dana/Eaton corp.
came out with the 1957 corvette with an LSD, was a very good upgrade!
how do i know, bought new in 57 a Corvette fuel injection,4 speed ,with LSD, HD ceramic brakes,didnt stop for sh%t when cold , but oboy when you got them up to temperature!!
you know thinking back(whew) that car could peg the 145mph speedo, many times.
Last edited by ronbros; 01-13-2015 at 06:28 PM.
#10
- must be 19 spline - these are getting rare - one of the remaining available diffs is the Auburn cone type diff
- the Jaguar crown gear has 7/16" bolts and the Dana 44 diff will have 3/8" holes.
- the fix is to drill out the 3/8" holes to 29/64"
Summit Racing is currently selling the Auburn for $315, free shipping and $75 coupon on future orders.
Free shipping probably does not include France
Last edited by plums; 01-13-2015 at 10:42 PM.
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Greg in France (01-18-2015)
#11
Any Dana 44 diff will fit with the following restrictions:
- must be 19 spline - these are getting rare - one of the remaining available diffs is the Auburn cone type diff
- the Jaguar crown gear has 7/16" bolts and the Dana 44 diff will have 3/8" holes.
- the fix is to drill out the 3/8" holes to 29/64"
Summit Racing is currently selling the Auburn for $315, free shipping and $75 coupon on future orders.
Free shipping probably does not include France
- must be 19 spline - these are getting rare - one of the remaining available diffs is the Auburn cone type diff
- the Jaguar crown gear has 7/16" bolts and the Dana 44 diff will have 3/8" holes.
- the fix is to drill out the 3/8" holes to 29/64"
Summit Racing is currently selling the Auburn for $315, free shipping and $75 coupon on future orders.
Free shipping probably does not include France
http://www.summitracing.com/int/parts/aub-5420112 ("designed for 3.73 gear ratios and down")
or this one:
http://www.summitracing.com/int/parts/aub-5420111 ("designed for 3.92 ratio and up")?
My car had 2.88 ratio, but I never know what up and down actually means when talking about diffs, are the advertisers talking numerically high/low or actual high/low?
Lastly is 10 bolt pattern correct (I do understand about the bolt hole widening).
Greg
#13
Total bargain, and cheaper than a rebuild by miles! they will not ship internationally, but I am sure someone in the US will help. Many thanks Plums. A question, is it this one:
http://www.summitracing.com/int/parts/aub-5420112 ("designed for 3.73 gear ratios and down")
or this one:
http://www.summitracing.com/int/parts/aub-5420111 ("designed for 3.92 ratio and up")?
My car had 2.88 ratio, but I never know what up and down actually means when talking about diffs, are the advertisers talking numerically high/low or actual high/low?
Lastly is 10 bolt pattern correct (I do understand about the bolt hole widening).
Greg
http://www.summitracing.com/int/parts/aub-5420112 ("designed for 3.73 gear ratios and down")
or this one:
http://www.summitracing.com/int/parts/aub-5420111 ("designed for 3.92 ratio and up")?
My car had 2.88 ratio, but I never know what up and down actually means when talking about diffs, are the advertisers talking numerically high/low or actual high/low?
Lastly is 10 bolt pattern correct (I do understand about the bolt hole widening).
Greg
is the one you normally want.
It also happens to be their heavier duty unit with a higher preload. That is normally
more expensive. But, I guess with 19 spline units being lower demand, they build
just that one and don't charge the premium.
You have to be very careful with the 2.88
My understanding is that Jaguar used 3 different carriers and the 2.88
is unique unto itself. It may require a spacer.
Check out posts by IcsAmerica:
https://www.jaguarforums.com/forum/x...upgrade-87356/
https://www.jaguarforums.com/forum/x...estion-123617/
https://www.jaguarforums.com/forum/x...f-head-123057/
https://www.jaguarforums.com/forum/x...rential-94945/
In that last one, he basically says that the one I pointed at will be fine with the 2.88, but you may
want to check with him directly.
I think you will need the generic DANA 44 bearings, so order them at the same time.
And on top of that, Don B has a photo album detailing his rebuild over at jag-lovers.
Ten bolts must be correct since IcsAmerica has already done it.
JEPC also calls for quanity 10.
There are other vendors, including ebay vendors that do ship internationally.
Just search Auburn + part number. Pages of them. Depending on shipping,
a higher purchase price might still work out cheaper if they have bulk
shipping discounts on their shipping account.
Or find the European distributor. You could contact Auburn, or they might
have a distributor listing on their site.
++
Last edited by plums; 01-14-2015 at 04:54 AM.
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Doug (01-14-2015),
Greg in France (01-14-2015)
#14
#15
auburn catalog page
The following page annotated in red is an extract from the 2013 catalog.
There are 4 possible fitments as well as a set of setup bearings.
The HP is the street version whereas the PRO carries a much heavier
preload.
The second illustration shows the deck height of the short and tall carriers
as used in DANA 44 applications. The safest way to order the right part
is to meaure your existing application before ordering.
illustration credit:
Differential Carrier Breaks | West Coast Differentials
++
There are 4 possible fitments as well as a set of setup bearings.
The HP is the street version whereas the PRO carries a much heavier
preload.
The second illustration shows the deck height of the short and tall carriers
as used in DANA 44 applications. The safest way to order the right part
is to meaure your existing application before ordering.
illustration credit:
Differential Carrier Breaks | West Coast Differentials
++
Last edited by plums; 01-18-2015 at 12:51 PM.
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#16
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ronbros (01-24-2015)
#18
#19
The Stig
Top Gear tame racing driver
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#20