Banjo lsd 3:36 to 2:78
#1 _Drag lc_
Posted 22 February 2019 - 09:58 PM
Can anyone shed some light on if I can do this or not?
So I’ve just picked up a bargain 3:36 lsd complete $100 and a single spinner 2:78 so what I’d like to do is get the lsd carrier from the 3:36 and put it in the 2:78 housing is that do able I can see the long bolt and short bolt housings. But as long as I keep the gear set with the right housing it should all be good right?
Cheers H
#2
Posted 22 February 2019 - 11:17 PM
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#3
Posted 23 February 2019 - 07:29 AM
Thank you for the diff parts page Clay.
The case is different between 3.55/3.36 and 3.08/2.78 ratios. The offset of the crown wheel mounting flange is engineered to suit the differing thicknesses/sizes of the 3.55/3.36 and 3.08/2.78 crown wheels and pinions.
I can't remember which way it is, however in one instance you would have to install a shim between the crown wheel and the flange and in the other instance you would need to machine some off the flange.
The Carriers are also designed to accept certain ratio sets. The Carrier for the 3.08/2.78 ratios has the two long bolts the Carrier for the 3.55/3.36 ratios does not.
The easiest way is to keep the Carriers and Cases with their intended ratio sets.
Edited by S pack, 23 February 2019 - 07:30 AM.
#4
Posted 23 February 2019 - 09:39 AM
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#5
Posted 23 February 2019 - 07:01 PM
Today I removed my long bolt LSD centre (only because its wrong date code for my XU1) and it had 3:36 gears. Not sure why as reading forums suggest long bolt centres were only used for 3.08 and 2.78. So mabey it works this way but not the other i.e can't put 3.08/2.78 in a short bolt housing?
#6
Posted 24 February 2019 - 08:00 AM
Today I removed my long bolt LSD centre (only because its wrong date code for my XU1) and it had 3:36 gears. Not sure why as reading forums suggest long bolt centres were only used for 3.08 and 2.78. So mabey it works this way but not the other i.e can't put 3.08/2.78 in a short bolt housing?
That is most likely the only way it works. You can put a 3.55/3.36 Case & gear set into a 3.08/2.78 Carrier. From memory it is the 3.08/2.78 crown wheel that is a fair bit beefier than the 3.55/3.36 so the Carrier is designed with more clearance for the crown wheel, hence the bulge and the two long bolts.
Edited by S pack, 24 February 2019 - 08:01 AM.
#7
Posted 24 February 2019 - 11:39 AM
Hi there,
Can anyone shed some light on if I can do this or not?
So I’ve just picked up a bargain 3:36 lsd complete $100 and a single spinner 2:78 so what I’d like to do is get the lsd carrier from the 3:36 and put it in the 2:78 housing is that do able I can see the long bolt and short bolt housings. But as long as I keep the gear set with the right housing it should all be good right?
Cheers H
Sounds like you should just sell the centre to me for $200 + freight & your headaches gone mate. I wouldn't mind a cheap spare. Gary.
#8
Posted 24 February 2019 - 01:01 PM
#9
Posted 24 February 2019 - 01:55 PM
#10 _Drag lc_
Posted 24 February 2019 - 02:17 PM
#11
Posted 24 February 2019 - 08:00 PM
Just put the single spinner in the car as its unlikely you will ever be able to break into a wheel spin if your car has an XU1 gearbox. That 3.36 LSD is worth keeping together as is probably worth $500 as they Are getting rare
#12
Posted 24 February 2019 - 08:51 PM
#13 _Drag lc_
Posted 24 February 2019 - 09:15 PM
I’ll put a bit more thought into this .
It’s not as if I’m going to drive it to Perth or anything.
Yes the 3:36 lsd is probably worth keeping together.
Cheers.
#14
Posted 24 February 2019 - 09:56 PM
#15 _lawn bowls_
Posted 24 February 2019 - 10:28 PM
i have a 2.78 lsd corse spline banjo for sale if anyone is interested.
#16
Posted 14 May 2019 - 08:02 PM
Thx wazza
#17
Posted 14 May 2019 - 08:40 PM
Brad, is no way the engine is doing 3800 @ 100KMh with a standard height tyre and a 3.55 gear set.
Taking a bit of a guess at the correct tyre height for a 175SR13 the car should be doing less than 3200 @ 100KMh, 3800 works out at a little over 120 KMh
I think I'd be checking the accuracy of the Tach, or the speedo.
To manage 3800 @ 100KMh takes in the order of 4.3:1 gear set with the standard tyre height (I'm using 23.6" tall as the height as an estimate)
As for the opening post, unless the car is gonna live on the highway I'd not even consider the 2.78, maybe 3.08, but really a 3.36 is a nice compromise between cruse RPM and speed, 3.55 is a little short for most people to be happy with, unless you're a lout or some such thing
#18
Posted 14 May 2019 - 09:16 PM
Attached Files
Edited by hanra, 14 May 2019 - 09:16 PM.
#19
Posted 14 May 2019 - 09:28 PM
My Mini K did 145KMh stone motherless flat, no idea what RPM, no tach in the K, and the poor tired little 1100 screaming its head off, mostly in protest, they were some fun years while I had that
#20
Posted 14 May 2019 - 09:46 PM
https://youtu.be/WfXziXqNGd0
Edited by hanra, 14 May 2019 - 09:47 PM.
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