1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

aftermarket LSD

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Old Jan 6, 2003 | 03:56 AM
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From: cerritos ca
aftermarket LSD

i have no LSD and i was wondering where can i get a aftermarket one and for how much??
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Old Jan 6, 2003 | 11:00 AM
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MazdaComp sells a Torsen unit, but I'm not sure on price. I know it's a bit salty, though. Your better bet would be to find someone parting out a GSL from the same year as your car and buy the rear end. That way you don't have to worry about changing driveshafts or brakelines...

--Danny
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Old Jan 6, 2003 | 11:15 AM
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A Gleason TorSen unit isn't a Limited SLip - it's a 'no-slip'. It mechanically sends the torque to the wheel with the most traction, whereas a limited slip allows some slippage before essentially connecting the two axles into a solid one and sending equal toque to both wheels irrespective of traction.

TorSens can be expensive, but it's definately a case of 'you get what you pay for'
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Old Jan 6, 2003 | 11:26 AM
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OK, my mind just went blank, whats type of LSD do GSL's have? I can't remember what its called.
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Old Jan 6, 2003 | 11:37 AM
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Viscous coupling, I believe - using fluid to allow a certain slip before lockup
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Old Jan 6, 2003 | 02:17 PM
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You will definatly pay for a Torsen rear end but it is the way to go if you are looking for performance. If you are drag racing(dumping the clutch) you will destroy this unit! If you are autocrossing, roadracing, or looking for nice cornering go with the Torsen.....Mazdaspeed Developement, Guru, or a Miata Torsen unit. If you are drag racing stick with the viscous type.....just build up the stock unit with some oversized discs. in it.............my $.02.
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Old Jan 6, 2003 | 02:50 PM
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Check out the the guys at Guru Motorsport $795 plus about $40 for the fedex to the US.

www.gururmotorsports.com
Actually I think Gforce in the states and mazdatrix is starting to sell them, but you can still buy them direct.

The product offering is heaps stronger and better set-up than a normal "torsen", i.e. when you lift a wheel Torsens tend not to bite, the TBD from Guru does.
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Old Jan 6, 2003 | 02:51 PM
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sorry web address is www.gurumotorsports.com
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Old Jan 6, 2003 | 02:54 PM
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This is along similar lines, how else can the GSL rear end be upgraded? Bigger axles? if so where can you get them? What else can be done to improve it?
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Old Jan 6, 2003 | 03:05 PM
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Originally posted by twister
Check out the the guys at Guru Motorsport $795 plus about $40 for the fedex to the US.

www.gururmotorsports.com
Actually I think Gforce in the states and mazdatrix is starting to sell them, but you can still buy them direct.

The product offering is heaps stronger and better set-up than a normal "torsen", i.e. when you lift a wheel Torsens tend not to bite, the TBD from Guru does.
I think RX7.com is going to start selling them. I saw one there that they had......very very nice.....this is the unit I am putting in!!!
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Old Jan 6, 2003 | 07:10 PM
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We do have one of the GURU's in stock for a first gen -
not sure of the price (sent to us "for evaluation - VERY nice unit). Call if you are interested.

Dave --
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Old Jan 6, 2003 | 08:48 PM
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From: cerritos ca
aighte cool thanks for all the help !
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Old Jan 6, 2003 | 09:37 PM
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Originally posted by 1st7heaven


I think RX7.com is going to start selling them. I saw one there that they had......very very nice.....this is the unit I am putting in!!!
very very nice is right!

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Old Jan 6, 2003 | 10:45 PM
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Hahaha, Adsy - You must have some sort of ESP deal going on for people talking about Guru stuff.
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Old Jan 7, 2003 | 01:40 AM
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Originally posted by S2-13BT
Hahaha, Adsy - You must have some sort of ESP deal going on for people talking about Guru stuff.
nah was just surfing this time round...

but don't it look nice??
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Old Jan 8, 2003 | 07:45 PM
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You guys trying to beat each other with posts?
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Old Jan 8, 2003 | 08:56 PM
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Originally posted by twister
You guys trying to beat each other with posts?
yes and he is loosing on AusRotary.com too
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Old Jan 9, 2003 | 12:09 AM
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Damn you Adsy.
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Old Jan 9, 2003 | 09:05 AM
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Originally posted by Manntis
Viscous coupling, I believe - using fluid to allow a certain slip before lockup

Shame on you manntis! Viscous couplings are generally used in AWD cars, acting as a center differential to help prevent the front differential from being locked to the rear differential when driving. They're NOT used in the GSL rear. The GSL differential is a clutched limited slip differential, no more, no less.
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Old Jan 9, 2003 | 11:10 AM
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so true...
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Old Jan 9, 2003 | 11:31 AM
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Okay, so I'm spoiled by having owned an Audi

I stand corrected.
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Old Jan 9, 2003 | 04:41 PM
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Mazdaspeed also makes an LSD for the first gen and it seems to still be available believe it or not. I wish this picture was bigger but you can still see clearly "SA22C" as when of the applications:



Unfortunatly I can't tell if it's 1, 1.5, or 2 way....
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