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Guest Message by DevFuse
 

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Will XT rear LSD fit on Loyale?


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8 replies to this topic

#1 91justy4wd

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Posted 28 October 2012 - 11:28 AM

I was wanting to install a rear LSD in my Loyale. Will the rear LSD from a XT be a direct bolt in? I assume I would able to use the same half shafts. If I am thinking correctly, this would allow me to have push button AWD/full time 4wd.

#2 tractor pole

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Posted 28 October 2012 - 11:51 AM

It is a bolt in install but you have to make sure that the rear diff ratio matches your transmission diff ratio. if I am not mistaken, Loyales generally have a 3.90 rear diff, unless it is a turbo model then it should have a 3.70 diff.

keep in mind that the turbo transmissions will require a 25 spline front axle shaft and the non turbo will have 23 spline

#3 91justy4wd

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Posted 28 October 2012 - 12:31 PM

My car is non turbo. What rear differentials would be a direct swap? I would prefer a LSD, but a regular open rear diff would be an option.

#4 tractor pole

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Posted 28 October 2012 - 01:55 PM

a direct swap would be a 3.9 VLSD from a legacy SS(I think)
the VLSD is a viscous type, it uses a silicone fluid instead of clutch packs.

they are kind of hard to find but then again so is a LSD rear diff.

Welcome to the forum

btw the search function will yield a lot more info than I could ever provide.
this subject has been covered in depth countless times.

TP

#5 91justy4wd

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Posted 28 October 2012 - 02:17 PM

Thanks TP. I will do a forum search.

#6 WoodsWagon

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Posted 28 October 2012 - 09:20 PM

The full time 4x4 transmission isn't worth swapping, the rear LSD certainly is. You take the limited slip carrier out of that diff, grind a bit on the housing of your loyale diff, and put your ring gear on the limited slip carrier. It's not complicated work. If you can pick up that diff cheap, do it. They sell for $300 on ebay to the datsun guys.

A dual range 2wd/4wd transmission out of a 86-89 gl wagon/3dr coupe/sedan is what you'd want.

#7 indigowarpz

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Posted 30 October 2012 - 04:24 PM

quick question - i haven't searched, but what about the RX lsd?

#8 Logan K

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Posted 05 November 2012 - 12:00 AM

quick question - i haven't searched, but what about the RX lsd?


Thats the same diff, 3.7

#9 Twitch de la Brat

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Posted 05 November 2012 - 03:42 AM

A quick discourse on Subaru Drivetrains.
All EA stuff (Loyale, GL, XT, RX) from 1981 to 1994 (last year of the loyale) is swappable. You just need to match turbo vs non-turbo. There may be a few oddballs here and there, but they're very rare to come across. As long as its EA81/82 it'll cross over.

The first gen Legacy stuff is a little different, but most of the diff stuff is the same, or similar enough it can be made to work with little effort.

So, as for your question of will this diff fit here and that diff fit there, as long as you match turbo with non-turbo and keep track of your diff ratios and generations, you'll be fine.

A little searching goes a long way, plus there are several FAQ's located through the forum that deserve some reading.

Twitch




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