4459 Subaru LSD questions...

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   I picked up an open 4.111 R160 from a Lagacy Wagon today at the junkyard. I picked it up for $25 bucks. I've been reading up on the subaru rear end swap, and lsd stuff, on dime quaterly...
I've read that people have taken the LSD unit, and used it with different gears (such as 4.11)... The above said swaps are generally the clutch type LSD though... They're pretty much impossible to find, and if you DO find one, they will generally cost you your first born... Well maybe not that much, more like an arm or a leg .
So here's what I'm getting at. The Subaru Viscous LSD (VLSD) is more readily available, and cheaper. I've read they aren't as good as a clutch type, but it's still better than nothing. The DQ article says they are good for going in a straight line, or from dead stops in slippery condidtions... Most of my racing will be at the drag strip, so I think it would suit me fine.
Can the Subaru VLSD unit be swapped into a different open case with different gears, OR could different gears be swapped into the VLSD care? I'd really like to get these 4.11s set up with limited slip... Anyone ever play around with the VLSDs?

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RacnJsn95 Enthusiast Joined: 28 July 2004 Posts: 240	Topic: Subaru LSD questions... Posted: 08 September 2006 at 5:35pm
	I picked up an open 4.111 R160 from a Lagacy Wagon today at the junkyard. I picked it up for $25 bucks. I've been reading up on the subaru rear end swap, and lsd stuff, on dime quaterly... I've read that people have taken the LSD unit, and used it with different gears (such as 4.11)... The above said swaps are generally the clutch type LSD though... They're pretty much impossible to find, and if you DO find one, they will generally cost you your first born... Well maybe not that much, more like an arm or a leg . So here's what I'm getting at. The Subaru Viscous LSD (VLSD) is more readily available, and cheaper. I've read they aren't as good as a clutch type, but it's still better than nothing. The DQ article says they are good for going in a straight line, or from dead stops in slippery condidtions... Most of my racing will be at the drag strip, so I think it would suit me fine. Can the Subaru VLSD unit be swapped into a different open case with different gears, OR could different gears be swapped into the VLSD care? I'd really like to get these 4.11s set up with limited slip... Anyone ever play around with the VLSDs?
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Bleach Guru Joined: 04 December 2002 Location: United States Posts: 4806	Posted: 09 September 2006 at 2:55pm
	I'm not sure people on this forum are much into LSD or ring and pinion swaps but I know very little myself. Here's what I know. I believe the pinion gears are built into the LSD pack. On the Datsun R200 the factory LSD unit only comes (in stock form) in 3.7 gears. That is 10 teeth on the LSD and 37 on the ring. The only other gearset that has 10 teeth on the pinion is the 3.9 so you can swap the LSD pack into the 3.9 which has 39 teeth on the ring. This drops your LSD gearing slightly in that case. The 3.54 and 4.11 have different numbers of teeth on both the ring and pinion and the ring won't mesh properly if just dropped into the LSD unit.... so my guess is that you can't just put the LSD pack into other R160 units. NISMO sells LSD units new but they are set for a certain gear ratio when you buy them. I've never actaully looked into this swapping myself but have heard from people who have done it and put 3.9 R200 LSD units together for their Z.
	Ratsun.net
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yello620 Enthusiast Joined: 22 July 2005 Location: United States Posts: 312	Posted: 10 September 2006 at 12:37am
	The pinion gear and the ring gear are a matched set and cannot be mismatched. but no reason that they shouldnt be able to swap out also. So just because the 3.7 and the 3.9 pinion both have 10 teeth, does not mean that they have the same gear cut pattern, they might, but i have never heard of one like that that would interchange. Jason
	1976 620 L20b 4spd 04 xterra wheels 2056015's lowered 3.5", Front disk brakes.
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RacnJsn95 Enthusiast Joined: 28 July 2004 Posts: 240	Posted: 10 September 2006 at 1:15pm
	From looking at pictures it looks like you can take out the carrier, and unbolt the ring gear... In theory if I could get an LSD carrier, and bolt the ring gear to it, and put it back in the 4.11 case with the pinion gear it should work... http://kmhafer.datsun510.com/Subaru.htm If you read that it says it's been done... and doesn't seem that difficult... I started this thread to see if anyone knew if it could be done with the 1990+ Subaru VLSD, instead of just the clutch type LSD. I did some more research and it looks like it's not possible, unless you modify the subaru half shafts to work in the Datsun car of your choice.
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