Limited slip differential and all wheel steering?
12-11-01, 11:52 PM
#1
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Limited slip differential and all wheel steering?
Aight, here is my question. I know that some RX-7's came with these things, but my question is which ones did. I have a 1991 Convertible and I don't think that mine has either of these, but I am curious if it does and I am curious which ones do. If anyone that knows could tell me I'd be much oblidged.
12-12-01, 12:00 AM
#2
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every 86-91 rx7 has the rear toe steering. they move a tiny bit (like a couple degrees) under hard breaking and cornering. the system sucks and it is highly recommended you replace the toe steer bushings with soild ones. they are $50 plus the labour.
some came with LSD's. don't know if the verts did.
some came with LSD's. don't know if the verts did.
12-12-01, 12:41 AM
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I'm not sure which models LSD came on, but mazda made a habit of putting it randomly on cars that wasn't supposed to have it. at any rate, better check anyway. jack the car up on the differential (put something behind the front tire first), put in neutral and take the E brake off. spin one of the back tires and look at the other. if it goes the same way, LSD if it goes the other, nope.
12-12-01, 05:47 PM
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I thought all Verts had LSD? As for the "all wheel steering", well its not as great as it sounds. Actually it sucks. All it is, is a rear bushing that is allowed to flex allowing the rear wheels to change toe position while under hard cornering. It gives the car an unsettled feeling when taking a TIGHT corner. It makes the rear of the car feel like it is starting to oversteer when its actually not. Mazdatrix sells the rear-steer toe eliminator bushing which prevents this.
12-12-01, 06:36 PM
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Hey, I have an 88 gxl. Does anyone know if this came with the LSD? I just don't have the time to get under the car right now and thought maybe someone out there knows off the top of their head. Also for you out there who have performed the TB mod, have you been able to keep your cruise control(if you had it obviously)? I want to do the mod but I want to see if there is a way I can keep the CC. Thanks for all of your help.
12-12-01, 07:12 PM
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Originally posted by fasthack
Hey, I have an 88 gxl. Does anyone know if this came with the LSD? I just don't have the time to get under the car right now and thought maybe someone out there knows off the top of their head. Also for you out there who have performed the TB mod, have you been able to keep your cruise control(if you had it obviously)? I want to do the mod but I want to see if there is a way I can keep the CC. Thanks for all of your help.
Hey, I have an 88 gxl. Does anyone know if this came with the LSD? I just don't have the time to get under the car right now and thought maybe someone out there knows off the top of their head. Also for you out there who have performed the TB mod, have you been able to keep your cruise control(if you had it obviously)? I want to do the mod but I want to see if there is a way I can keep the CC. Thanks for all of your help.
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12-12-01, 11:41 PM
#9
Banned. I got OWNED!!!
yes you do have lsd, all gxl's came with lsd
That said, from what I understand, most of the convertibles, 5sp or automatic, came with a 3.9 open differential, instead of the 4.1 LSD found on gxl 5 speeds. IT does bolt right up, just get the proper speedo drivegear out of the tranny that the rearend was mated to.
12-13-01, 01:31 AM
#10
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The LSD rear end should have a yellow-painted metal tag on the fill plug telling you to use LSD gear oil.
http://www.3rotor.com/images/your_ro...boschpumps.jpg
http://www.3rotor.com/images/your_ro...boschpumps.jpg
12-13-01, 02:01 AM
#11
Originally posted by hypntyz7
YES! Thank GOD! Finally someone other than me who agrees that all gxl's came with lsd rearends! There are a couple of gxl owners on this borad who seem to believe that thye did not, and even though I have owned/worked on 30+ FC's and never seen a gxl withOUT a LSD, refuse to believe that its possible, especially for a higher mileage car, that the rearend was replaced with a non-lsd that was easier to find, or maybe the original owner didnt know any better.
That said, from what I understand, most of the convertibles, 5sp or automatic, came with a 3.9 open differential, instead of the 4.1 LSD found on gxl 5 speeds. IT does bolt right up, just get the proper speedo drivegear out of the tranny that the rearend was mated to.
YES! Thank GOD! Finally someone other than me who agrees that all gxl's came with lsd rearends! There are a couple of gxl owners on this borad who seem to believe that thye did not, and even though I have owned/worked on 30+ FC's and never seen a gxl withOUT a LSD, refuse to believe that its possible, especially for a higher mileage car, that the rearend was replaced with a non-lsd that was easier to find, or maybe the original owner didnt know any better.
That said, from what I understand, most of the convertibles, 5sp or automatic, came with a 3.9 open differential, instead of the 4.1 LSD found on gxl 5 speeds. IT does bolt right up, just get the proper speedo drivegear out of the tranny that the rearend was mated to.
hmmm, ok so vert's, gxl's, GTUs's, T2's and are we missing anything? What about series 4 sports?
12-13-01, 02:01 AM
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Thank for all the info guys! I will check for the LSD when I put my new mufflers on later in the week. I will probably be doing the TB mod at the same time as fasthack, as we both represent the rotary in New Orleans.
12-13-01, 02:03 AM
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Originally posted by hypntyz7
YES! Thank GOD! Finally someone other than me who agrees that all gxl's came with lsd rearends! There are a couple of gxl owners on this borad who seem to believe that thye did not,
YES! Thank GOD! Finally someone other than me who agrees that all gxl's came with lsd rearends! There are a couple of gxl owners on this borad who seem to believe that thye did not,
12-13-01, 02:40 AM
#14
Banned. I got OWNED!!!
Node, the list goes more like this:
4.1 LSD:
ALL GXLS 86-90 and most 91 coupes
ALL T2s, though they arent compatible with NA cars
86-8 sport, 88 GTU, 89-90 GTUs(gtus had 4.3)
No 4 lug car came stock with an lsd, and form what i understand most verts did NOT have an LSD either.
Automatic cars, whether vert, 4 lug, 5 lug, gxl, whatever came with 3.9 ratios, the GXL would have had a 3.9 LSD.Ive been told most of the 5speed verts came with the 3.9 also, non lsd.
4.1 LSD:
ALL GXLS 86-90 and most 91 coupes
ALL T2s, though they arent compatible with NA cars
86-8 sport, 88 GTU, 89-90 GTUs(gtus had 4.3)
No 4 lug car came stock with an lsd, and form what i understand most verts did NOT have an LSD either.
Automatic cars, whether vert, 4 lug, 5 lug, gxl, whatever came with 3.9 ratios, the GXL would have had a 3.9 LSD.Ive been told most of the 5speed verts came with the 3.9 also, non lsd.
12-13-01, 03:36 PM
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argggg... dude how many times do I have to say 89-90 GXL DON'T HAVE A LSD. The only LSD that came on 89+ NA was on the GTUs, it uses a viscous tpye LSD, not a 86-88 types which are prone to wear out. the 86-88 do have the LSD stock, the 89+ don't. if you are so sure about the LSD on a 90 GXL, come and find one on my car. Please do so, I've been wanting it for the longest time so i can parellel park in teh snow without wacking the curb when the car turns sideway. I have a 90 GXL.
http://www.marx7.org/graphix/gallery/gen2/89spec2.jpg
There, a picture to back up what I said. It clearly says they dont have LSD unless it is a Turbo. That was from a 90 brochure. GTUs DID HAVE LSD with a 4.3 rear end.
To prove my point more, grab a 89-91 shop manual. It will say the only NA differential that has limited slip is the ones with 4.30 gearing..
http://www.marx7.org/graphix/gallery/gen2/89spec2.jpg
There, a picture to back up what I said. It clearly says they dont have LSD unless it is a Turbo. That was from a 90 brochure. GTUs DID HAVE LSD with a 4.3 rear end.
To prove my point more, grab a 89-91 shop manual. It will say the only NA differential that has limited slip is the ones with 4.30 gearing..
12-14-01, 02:07 PM
#16
Banned. I got OWNED!!!
Care to exp;lain how Ive personally parted out 2 89/90 GXL's and BOTH had LSD? Maybe since your car is high mileage it had the rear replaced with a non-lsd unit? Are you the origninal owner?
Like I said, Ive owned or parted out about 33 FCs so far. OF those about 12 were gxls. On EVERY SINGLE GXL Ive had or seen has had LSD, including 89-90. How many FC's have *YOU* owned/had Tom?
Like I said, Ive owned or parted out about 33 FCs so far. OF those about 12 were gxls. On EVERY SINGLE GXL Ive had or seen has had LSD, including 89-90. How many FC's have *YOU* owned/had Tom?
12-15-01, 01:55 AM
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Okay, so while repacing my mufflers today I spun the wheels. With the car in neutral when I spun one wheel nothing happened. In gear however, when I spun one wheel the other turned the opposite way. That means that I don't have the LSD right?
12-16-01, 10:59 AM
#20
Former Moderator. RIP Icemark.
Originally posted by rxspeed87
you guys keep saying that the sports had an LSD
what are you talking about???
I have not seen a sport with one yet and mine sure as hell doesn't have one
you guys keep saying that the sports had an LSD
what are you talking about???
I have not seen a sport with one yet and mine sure as hell doesn't have one
No SE, base, or Luxury coupes had them.
No GTU after 5/88 had them. Only GTUs models did.
No 'verts had them.
No GXL Built after 5/88 had a LSD. ONLY pre-89 models (series 4) did. I suspect when someone says that every one he has owned has had one on a 89-90 GXL, that he or she is not testing correctly, or that either the dealer or someone has refitted the rear end with one.
t_mak@mail.plymouth.edu is completely correct.
And I personally like the Rear toe axle. When the bushings are in good condition you will never see the toe shift at anything under .8G. Unless you are racing on a track at 110% you will never notice the shift, except that the rear end will tuck in just a little when you are close to loosing it (which is a very good thing and keeps a lotta RX7s from being wrecked by less experienced drivers, hitting a tree backwards).
Last edited by Icemark; 12-16-01 at 11:06 AM.
12-16-01, 09:44 PM
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Originally posted by Icemark
No sports did not have them.
No SE, base, or Luxury coupes had them.
No GTU after 5/88 had them. Only GTUs models did.
No 'verts had them.
No GXL Built after 5/88 had a LSD. ONLY pre-89 models (series 4) did. I suspect when someone says that every one he has owned has had one on a 89-90 GXL, that he or she is not testing correctly, or that either the dealer or someone has refitted the rear end with one.
No sports did not have them.
No SE, base, or Luxury coupes had them.
No GTU after 5/88 had them. Only GTUs models did.
No 'verts had them.
No GXL Built after 5/88 had a LSD. ONLY pre-89 models (series 4) did. I suspect when someone says that every one he has owned has had one on a 89-90 GXL, that he or she is not testing correctly, or that either the dealer or someone has refitted the rear end with one.
