meximan

iTrader: (37)

so heres my dilemma. i have a 91 fc. and im trying to figure out if i got lsd or not. now ive read some of the posts about it, and got to this post about "91 coupes having lsd ect ect" now the car was painted before i bought it so it doesnt havea label as to what model, but i am told gxl. it does have the nice fabric and seats, but it does not have a switch saying "adjustable suspension" or what not. so that confuses me. its power everything, wiper. oh yes this car is na too forgot to mention that. now i read on the forum to spin the wheels and if they go same way it got lsd if opposite it doesnt. i spun one wheel and the other turned opposite. so i was guessin my car doesnt have lsd. now i brought it up to my friend who is pretty good with rx-7's. he said that doesnt really matter, his corolla has lsd but still turns opposite, unless he spins it really fast. so he thinks my car should have lsd...so this is kinda where im at, what the heck do i got? if i were to look at the pumpkin or diff, would it have a lsd label on it? im tryin to figure this all out before going to get a s4 lsd to swap in place of mine if not. also s5 gxl's, i heard that for a tubro swap since the gxl is basically mini turbo model taht it shares same rear end, im not sure about that either from waht i have read, but if so thats one step less i have to do for turbo swap. thanks for your comments!

mort2002

iTrader: (1)

ok your car shouldnt have a LSD. only the turbo and GTUs modles had LDS is S5.IMO you would be better off going with a S4 LSD anyways. i swapped out my viscous LSD for a clutch LSD last winter. but if you do an S4 LSD you will need the half shafts too..

your car is equiped similar to the S5 turbo, but the drive train is still the smaller N/A drive train. the turbo has all the power options just like the GXL.

all of this info is located at this thread posted at the top of the 2nd gen tech.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/specifications-what-did-2nd-generation-rx-7-come-w-options-standard-features-249616/

Icemark

Nope such thing as a GXL in 91. Please read the Standard features and options thread found in the sticky section at the top of this section.

He is either smoking crack or has a viscous LSD that is in poor shape.

Again he does not know what he is talking about.

The GXL is not a Turbo by any means. It does not have the same rear end, or driveline at all. The GXL models (which were only available from 86 through 90- NOT 91) used the same drive line as any other non turbo. Of the GXL's only the 86-88 GXL had a LSD, and it was a clutch type LSD but still was the smaller 7" ring gear found on every other non turbo FC and same differential front flange found on every non turbo model.

So to make it short...

1. If you have a 91 FC without a turbo, you don't have a LSD.

2. If you have a rare A&B package non turbo you might have a LSD (although in all honestly I think the members that thought they had one on a A&B package coupe, just were clueless)... but we already know you don't have leather, so you don't have a B package, so you don't have a LSD.

3. Your buddy is probably not your best choice of info on a cars.

meximan

iTrader: (37)

thank you for your replys, mort you said my car is similiar to the turbo models minus the drivetrain, so, if doin a turbo swap motor engine and drivetrain, would the rest of the rear end still work? in doin a na lsd swap to swap my s5 viscous POS :P to s4 i need halfshafts. do you know in turbo models if thats the same also, if i go s5 to s4 in a tII rear end is it straight swap or do you need halfshafts for s4 also? im gonna try the tire test again tommaro. and where the heck is prosser WA? lol , thats cool ur in wa another guy to meet!

Omixeo

iTrader: (1)

Refer to the above statement.

meximan

iTrader: (37)

OK once again i read the 91 section, Package A- i have all of those listings of characteristics....now again its said taht package a and B are rumored to have lsd.

Icemark

BUT you don't have the B package (no leather)... SO NO LSD. A and B package... not just one or the other.

Besides according to Mazda not a single 91 non turbo built had a LSD. But you already tested and showed that you didn't have a LSD... Not a viscous LSD, not a clucth LSD... YOU DON"T HAVE A LSD!

And again, there is nothing in common between the Turbo and Non turbo drive lines. Why are you not getting that. You will need to replace the rear end, or have a custom drive shaft built if you want to retain your non turbo rear end and do a turbo swap. If you swap a Turbo rear end in, you will need to swap half shafts.

Not seeing why you are not getting these things. Is it just wishful thinking, or an inability to understand what you have?

Maybe to make it simpler:

The only thing common between your non turbo coupe model and a Turbo is the basic body and that you have 5 lug wheels.

meximan

iTrader: (37)

What the hell....this **** pisses me off. OK first off i came on this forum to learn something about rx-7's. i like rx-7's i enjoy workin on my own cars as a hobby NOT as a Career. I do not have any Schooling in mechanics, I AM A CAR ENTHUSIAST, just like many of u started. Now i read threads all the time that are like "read this read that" CHECK THE FAQ's, and put people down about it. thats bull in my mind, IF IM WILLIN TO LEARN SOMETHING , TEACH ME. if you owned a shop and i came in and asked you questions about what something does or a product you have, are you going to tell me, go ask someone else or go read some books? If you dont want to answer my question dont post anything, if i dont understand something help me, dont knock me down for it.
Now in your mazda guide for the year 91 , it says package a is optional, or ...package b is optional but you must have package a too. i said i think i have package A based off everything it lists, package a could have been purchased by itself, i never said i had package b. I read the FAQ's, i had questions about it so i asked. i did the tests, burnout, one tire on teh ground and turn the other, ect. i do 2 tire burnouts, i left one wheel on the ground and one in the air and it moves...so if mazda guide is right, and this rumor i heard and am asking about, about package a having lsd, is then false. i dont see what i have done wrong...other then try and learn something about my car. ..

racerlinkfc

Don't sweat it man im doing a somewhat similar swap im putting in an 88 s4 turbo 2 rear end in my 86 n/a rx7 i have the base model with the four lug wheels. im currently swithing over my brakes,spindles and everything else i might need to have the 5 lug and turbo calipers. i've been told that i will need a custom driveshaft made. which is something im not worried about if you have anymore questions you should try and contact one of the vendor spots on the forums. i would recommend rotaryshack or mazdatrix they might give you the info you need and better explain things your maybe not getting good luck to you man .

Icemark

No, two people answered your question and you refused to read it. That is what pisses me off people that claim they want to learn something and then ignore the facts in front of them. Your questions were answered in the first two replies in this thread. BUT instead of you listening/reading... instead of paying attention, you chose to ignore those answers. So when you say you are willing to learn ...well, WHY THE **** ARE YOU NOT READING THE REPLIES? On top of that you could have found the same info already posted in countless spots here... but then you already have proven you don't read...

Okay I don't know how much clearer... Of the few people claiming that they had a LSD they had both the A and B package... not just the A package. You only have A package... so you don't have a LSD even if they really did exist in the 91 non turbos (which Mazda also says didn't exist anyway).

Okay again (since you didn't read the 2nd gen archive) lets do some schooling (and you can go back to your buddy and tell him this too since he appears not to know anything).

With a working clutch type or viscous type LSD if you jack the rear end up and spin one wheel, the opposite will spin the same direction or not at all.

With a open differential, if you jack the rear end up, and spin one wheel, the opposite will spin the opposite direction. This is the same thing that will happen with a burnt out, wasted and generally used all the hell up LSD (just like your buddy claims to have).

Almost anyone can break both wheels loose on a FC. This would mean two burn out streaks. This does not mean that you have a LSD, but rather that you have poor traction. A 15 year old suspension with tiny 205 width tires (the stock size on a S5 non turbo) is the reason... not because you have a LSD.

A burn out does not mean you have LSD (and for the life of me I can't figure out why anyone would think it does... ). So it is not a test for a LSD.

Now since you have ignored most of the replies in this thread, I doubt you will read any of this, but one hopes you do so you can school your buddy and yourself.

NZConvertible

So you think you should have the right to ask questions that have been asked and answered dozens of times before? That's what the FAQ and other sticky threads are put there for. If someone tells you to read the FAQ that's probably because they already have and the answer to your question is in there. Why should we waste our time repeating answers for you?

This is not a shop. Don't except to be treated like a customer on a discussion forum. Around here the "customer" is quite often wrong and will be told so.

You questions were answered at least a couple of times. If you don't want to read and accept the answers to your questions, don't post anything...

...in a straight line. Try doing that with the wheel turned to full lock and you'll do nothing but spin the inside wheel. That's how you test an LSD.

Wh1t3 C0m3t

hmmmm, my '90 GXL spins the other wheel the same way if jacked up, and has always behaved like a car w/ lsd, but from what i'm reading it doesn't?

meximan

iTrader: (37)

<edited for Flaming>

RX3SP

iTrader: (62)

It could have an LSD in it. Even if it didn't come from the factory with one doesn't mean that someone didn't install one at some point.

meximan

iTrader: (37)

yup, ive had it for about a yr.

Roen

iTrader: (2)

I started off the same way you did, except I read a lot of stickies, that's why my post count is so low. They're very clear, and I never had any questions of what does my car have. I could easily find the answers you're looking for in 5 minutes. If you're here to learn, learn the method on how to find the information you're looking for. Don't expect anyone to spoon-feed you information. Put yourself in the others' shoes. Would you really like to respond to 5000 posts on "Does my car come with power locks from the factory?"It's the same thing.

You have a 91, you don't have BOTH the A & B package. You do not have LSD from the factory. You may have LSD if a previous owner put on an aftermarket one.

For the turbo conversion you need:

Turbo engine
Turbo clutch
Turbo flyhweel
Turbo transmission
Turbo driveshaft
Turbo half-shafts
Turbo differential
Turbo starter
Turbo clutch slave

Your friend might know how to drift, but that doesn't mean he knows anything about mechanics. Especially his statement about you having an LSD? That proves a whole lot to many people.

You might just have a shot aftermarket viscous LSD. Or you could just be imagining it.

Turbo2FC3S

iTrader: (1)

werd

you also need senors, harness, cpu and other small things to convert to turbo.

just like roen, i started off searching, my post count is even lower than his. i've found answers to practically all my questions by searching the forum. either way, it sounds like you either have a shot LSD or the most obvious, you dont have LSD at all, so either way you might want to replace your shot LSD or open diff. with a new/good one.

microdrifter001

bashing a guy for asking technical questions...........awesome

NZConvertible

This idiot knows a lot more about these cars than you do. Ignoring the advice you're given and calling people names is a good way to get ignored the next time you need help.

Test it like I said and you'll know staight away if you have a functioning LSD or not.

TehMonkay

iTrader: (-1)

Maybe im reading it wrong but i think he said he understood that he doesnt have an lsd before he started getting irritated. But it looks as though icemark read it wrong and thought meximan was just repeating himself.

Slow Rotor

I didnt read all the posts but if you wanna know if your car has an lsd just go do a burnout and see if it leaves 1 or 2 lines, easy as that

papiogxl

iTrader: (6)

Not quite, many open diff cars have been known to leave 2 marks, (this happens if both have break traction at the same time)

red rex

hmmm well i find this kind of odd because my 91 T2 doesn't have an LSD in it, i jacked up the back and as i spin one tire the other turns the opposite way, i think i might have screwed! or i'm just stupid haha

red rex

gotten screwed*****

Roen

iTrader: (2)

i think your lsd may just be shot. VLSD's when worn behave almost like an open diff. It's the same as my GTUs. Diff's are wear and tear parts. They don't last forever.