86 Sport NA diff question
05-31-06, 11:01 PM
#1
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86 Sport NA diff question
Did the sport models come with an open diff or LSD? How can the LSD's be identified?
If it comes with an LSD, How do you test for proper function? I know the earlier LSD's were the clutch type and that they wear out but how can you tell if it is?
Bummer to have to ask but cant find much info on the sport model off the FAQ or am I missing something in my searches?
If it comes with an LSD, How do you test for proper function? I know the earlier LSD's were the clutch type and that they wear out but how can you tell if it is?
Bummer to have to ask but cant find much info on the sport model off the FAQ or am I missing something in my searches?
05-31-06, 11:22 PM
#2
Mazdaspeeding
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I was investigating one for my friend and I believe they are open diff. GXL's and Turbos only(shootin from the hip) Test by lifting the car and turning the wheels opposite=open same=lsd
05-31-06, 11:26 PM
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If by sport model, you mean GX, it did [i]not]/i] come with a LSD.
You can check the sticky thread that outlines what standard features came with the different models of FCs.
** edit
ahh too slow
You can check the sticky thread that outlines what standard features came with the different models of FCs.
** edit
ahh too slow
05-31-06, 11:28 PM
#4
Former Moderator. RIP Icemark.
Found in the FAQ for FC sticky thread, found at the top of this section:
Please read the FAQ for FC sticky thread before posting. It has the answers to many commonly asked questions, such as the one this thread was started with.
Did my 2nd Gen RX-7 come with a Limited Slip Differential?
Only the following USA model 2nd gen RX-7s had a LSD from the factory:
86-88 GXL
87-91 T2
88 GTU
89-90 GTUs (however not the 89-90 GTU)
It is also rumored that a few rare 91 coupes with both the A (upgraded the interior trim, added a power sunroof, tilt steering wheel, cruise control, and 4 piston front disc brakes and vented single piston rear brakes) and the B package (leather seating, a CD player, and rear cargo cover) came with a LSD, but you should note that Mazda denies that any FC other than the T2 came with a LSD in 91). You can also tell by looking at the differential as there will be a LSD tag on S4 cars with a LSD.
Only the following USA model 2nd gen RX-7s had a LSD from the factory:
86-88 GXL
87-91 T2
88 GTU
89-90 GTUs (however not the 89-90 GTU)
It is also rumored that a few rare 91 coupes with both the A (upgraded the interior trim, added a power sunroof, tilt steering wheel, cruise control, and 4 piston front disc brakes and vented single piston rear brakes) and the B package (leather seating, a CD player, and rear cargo cover) came with a LSD, but you should note that Mazda denies that any FC other than the T2 came with a LSD in 91). You can also tell by looking at the differential as there will be a LSD tag on S4 cars with a LSD.
05-31-06, 11:34 PM
#5
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Originally Posted by Icemark
Found in the FAQ for FC sticky thread, found at the top of this section:
Please read the FAQ for FC sticky thread before posting. It has the answers to many commonly asked questions, such as the one this thread was started with.
Please read the FAQ for FC sticky thread before posting. It has the answers to many commonly asked questions, such as the one this thread was started with.
.
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06-01-06, 07:44 AM
#8
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I did read that part of the FAQ, As a matter of faqt. But I thought it was fucqing futile because I didn't see the sport model mentioned for specs. Faqt is the sport hardly gets mentioned. Thot I was missing something there. Faqryinoutloud. It's not like I didn't look. I lalways look before I'd ask in case search ***** abound. lol. Unlike some noobs that keep asking the same questions about exhaust mods and such crap.
Matter of faqt reading this part of the faq that I thot was fuq'd made something even more confusing.
Quote:
Did my 2nd Gen RX-7 come with a Limited Slip Differential?
Only the following USA model 2nd gen RX-7s had a LSD from the factory:
86-88 GXL
87-91 T2
88 GTU
89-90 GTUs (however not the 89-90 GTU)
^^^^^^^^^^^^^^^^^^^^^^^^^^WTFuq is this faqt? Isn't that a contradiction in itself? Or am I reading this faqt wrong? To me it reads like inclusion and exclusion in the same statement. Besides that, I've always held the impression (maybe incorrectly) that the Sport model was the closest thing to a GTU without the badge. Not that it makes any difference here.
I applaud Icemark for his diligence reminding us to do the FAQ thing first, But the rest who thot I asked cause I was lazy can fuqqidaboutit.
No offense Ice'
but where the fuq on the diff is the tag for an LSD? Is it visible from the back of the diff? Coz I've had already had a couple of neck injuries and am not about to go crawl under the car on my back just to fuqquin' find out. I'll wait for the next time it's up on a lift.
Matter of faqt reading this part of the faq that I thot was fuq'd made something even more confusing.
Quote:
Did my 2nd Gen RX-7 come with a Limited Slip Differential?
Only the following USA model 2nd gen RX-7s had a LSD from the factory:
86-88 GXL
87-91 T2
88 GTU
89-90 GTUs (however not the 89-90 GTU)
^^^^^^^^^^^^^^^^^^^^^^^^^^WTFuq is this faqt? Isn't that a contradiction in itself? Or am I reading this faqt wrong? To me it reads like inclusion and exclusion in the same statement. Besides that, I've always held the impression (maybe incorrectly) that the Sport model was the closest thing to a GTU without the badge. Not that it makes any difference here.
I applaud Icemark for his diligence reminding us to do the FAQ thing first, But the rest who thot I asked cause I was lazy can fuqqidaboutit.
No offense Ice'but where the fuq on the diff is the tag for an LSD? Is it visible from the back of the diff? Coz I've had already had a couple of neck injuries and am not about to go crawl under the car on my back just to fuqquin' find out. I'll wait for the next time it's up on a lift.
Last edited by ErixHvn; 06-01-06 at 08:01 AM.
06-01-06, 07:59 AM
#9
The GTU and GTUs are 2 different things.
The sport model wasn't mentioned because of the following words:
'ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY'
It would also help if you didn't make up random *** words... just a thought.
The sport model wasn't mentioned because of the following words:
'ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY'
It would also help if you didn't make up random *** words... just a thought.
06-01-06, 08:10 AM
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Originally Posted by My5ABaby
The GTU and GTUs are 2 different things.
The sport model wasn't mentioned because of the following words:
'ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY'
It would also help if you didn't make up random *** words... just a thought.
The sport model wasn't mentioned because of the following words:
'ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY'
It would also help if you didn't make up random *** words... just a thought.
Besides, If it bothers you that much then why the hell did you even answer this thread???? It wasn't like I asked you specifically for this info. I just figured I'd get some clarification from someone in the know who doesn't have to be a ****. Go stick your nose in someone else's behind. Oh BTW, that post of yours about the banjo bolt PD had been answered in so many other threads I was really surprised you didn't know how to search that one out.
Last edited by ErixHvn; 06-01-06 at 08:25 AM.
06-01-06, 08:27 AM
#11
Originally Posted by ErixHvn
Chill out man, See, now that difference in the "s" has been pointed out it becomes clear. Thanks for that but who the hell died and made you class monitor? Was trying to inject a little humor into the thread, Sorry if the "random *** words" bother you. Just my thought.
Originally Posted by ErixHvn
Besides, If it bothers you that much then why the hell did you even answer this thread????
However, it does confuse me as to why me giving you advice about how to make your questions easier to answer gets scoffed at.
Originally Posted by ErixHvn
It wasn't like I asked you specifically for this info. I just figured I'd get some clarification from someone in the know who doesn't have to be a ****. Go stick your nose in someone else's behind.
Glad it was appreciated.
06-01-06, 09:37 AM
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My5ABaby.
It's all in the 'tude dude, Your implying that I didn't search in an earlier post (" Sadly, he needs to. Good job people searching/reading the stickies .") didn't help. And where else was any of your answers helpful at all about identifying an LSD? I bought my used and don't know if the orig. owner had one put in after. Sold it to me as having the LSD. The problem I had was that your stating the obvious ("ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY") just makes for a smartass comment implying I can't read either. The FAQ barely even mentions the sport model anywhere if I remember correctly and I was wondering if it was omitted by accident. My FSM didn't have any info on identifying/testing either if you care to know. And as I mentioned, I'd have a difficult time crawling on my back because of a neck injury and would like to spare myself for other endeavors. Didn't mention that on the original post because I didn't need anyone's pity.
At least Melicha8 was able to give a helpful suggestion since I asked about identifying one. Thanks man. That helps since I cant find a tag anywhere, At least with a mirror. I'd still like to know the tag's exact location.
Dude, If I took offense for what I percieved was a smartass commentary, Would it be at all surprising? If my perception was wrong you have my most sincere and humble apology here on the forum. My Bad. I'm sorry.
It's all in the 'tude dude, Your implying that I didn't search in an earlier post (" Sadly, he needs to. Good job people searching/reading the stickies .") didn't help. And where else was any of your answers helpful at all about identifying an LSD? I bought my used and don't know if the orig. owner had one put in after. Sold it to me as having the LSD. The problem I had was that your stating the obvious ("ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY") just makes for a smartass comment implying I can't read either. The FAQ barely even mentions the sport model anywhere if I remember correctly and I was wondering if it was omitted by accident. My FSM didn't have any info on identifying/testing either if you care to know. And as I mentioned, I'd have a difficult time crawling on my back because of a neck injury and would like to spare myself for other endeavors. Didn't mention that on the original post because I didn't need anyone's pity.
At least Melicha8 was able to give a helpful suggestion since I asked about identifying one. Thanks man. That helps since I cant find a tag anywhere, At least with a mirror. I'd still like to know the tag's exact location.
Dude, If I took offense for what I percieved was a smartass commentary, Would it be at all surprising? If my perception was wrong you have my most sincere and humble apology here on the forum. My Bad. I'm sorry.
06-01-06, 09:58 AM
#13
Originally Posted by ErixHvn
My5ABaby.
It's all in the 'tude dude, Your implying that I didn't search in an earlier post (" Sadly, he needs to. Good job people searching/reading the stickies .") didn't help.
It's all in the 'tude dude, Your implying that I didn't search in an earlier post (" Sadly, he needs to. Good job people searching/reading the stickies .") didn't help.
Originally Posted by ErixHvn
And where else was any of your answers helpful at all about identifying an LSD? I bought my used and don't know if the orig. owner had one put in after. Sold it to me as having the LSD. The problem I had was that your stating the obvious ("ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY") just makes for a smartass comment implying I can't read either. The FAQ barely even mentions the sport model anywhere if I remember correctly and I was wondering if it was omitted by accident. My FSM didn't have any info on identifying/testing either if you care to know. And as I mentioned, I'd have a difficult time crawling on my back because of a neck injury and would like to spare myself for other endeavors. Didn't mention that on the original post because I didn't need anyone's pity.
Originally Posted by ErixHvn
At least Melicha8 was able to give a helpful suggestion since I asked about identifying one. Thanks man. That helps since I cant find a tag anywhere, At least with a mirror. I'd still like to know the tag's exact location.
https://www.rx7club.com/showthread.p...t=lsd+ident%2A
https://www.rx7club.com/showthread.p...t=lsd+ident%2A
Originally Posted by ErixHvn
Dude, If I took offense for what I percieved was a smartass commentary, Would it be at all surprising? If my perception was wrong you have my most sincere and humble apology here on the forum. My Bad. I'm sorry.
06-01-06, 10:08 AM
#15
Former Moderator. RIP Icemark.
Originally Posted by ErixHvn
. Good job people searching/reading the stickies .") didn't help. And where else was any of your answers helpful at all about identifying an LSD? I bought my used and don't know if the orig. owner had one put in after. Sold it to me as having the LSD. The problem I had was that your stating the obvious ("ONLY THE FOLLOWING USA MODEL 2ND GEN RX-7S HAD A LSD FROM THE FACTORY") just makes for a smartass comment implying I can't read either. The FAQ barely even mentions the sport model anywhere if I remember correctly and I was wondering if it was omitted by accident. My FSM didn't have any info on identifying/testing either if you care to know. And as I mentioned, I'd have a difficult time crawling on my back because of a neck injury and would like to spare myself for other endeavors. Didn't mention that on the original post because I didn't need anyone's pity.
I don't know how much more clear it can be. We put those threads up there so that people can help themselves. Let face it, you didn't look!
But I guess it comes down to... You can lead a horse to water, but you can't make it drink.
Last edited by Icemark; 06-01-06 at 12:27 PM.
06-01-06, 10:35 AM
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I bought mine used and don't know if the orig. owner had one put in after. Sold it to me as having the LSD that he said came factory. As I stated in a post earlier. I needed a way to identify it and test it's function. That's why I asked. I also mentioned that I searched the faq but couldn't get anywhere on identifying tags.
So why is everyone assuming I didn't read the Faq, And I assure you I don't frivolously post a question without checking and searching. If you'd care to read my orig. post again I asked
Did the sport models come with an open diff or LSD? How can the LSD's be identified?If it comes with an LSD, How do you test for proper function? I know the earlier LSD's were the clutch type and that they wear out but how can you tell if it is?
Bummer to have to ask but cant find much info on the sport model off the FAQ or am I missing something in my searches? As I mentioned on my first post and I did search and what I found gave me cause to ask. Or do I just have to give everyone all the circumstances of why I even bothered to ask. Geez.
And for all who assumed that I didn't bother to search at all here's what got me confused to begin with. https://www.rx7club.com/showthread.p...lsd+diff+sport So before anyone else jumps on the bandwagon by assuming I didn't do the search and make another wrong conclusion. Pisses me off to have a bunch of people get on my case because they didn't read the whole thread and assume that I just contribute to the usual noob clutter about **** that's been answered a thousand times before. So back off!!
So why is everyone assuming I didn't read the Faq, And I assure you I don't frivolously post a question without checking and searching. If you'd care to read my orig. post again I asked
Did the sport models come with an open diff or LSD? How can the LSD's be identified?If it comes with an LSD, How do you test for proper function? I know the earlier LSD's were the clutch type and that they wear out but how can you tell if it is?
Bummer to have to ask but cant find much info on the sport model off the FAQ or am I missing something in my searches? As I mentioned on my first post and I did search and what I found gave me cause to ask. Or do I just have to give everyone all the circumstances of why I even bothered to ask. Geez.
And for all who assumed that I didn't bother to search at all here's what got me confused to begin with. https://www.rx7club.com/showthread.p...lsd+diff+sport So before anyone else jumps on the bandwagon by assuming I didn't do the search and make another wrong conclusion. Pisses me off to have a bunch of people get on my case because they didn't read the whole thread and assume that I just contribute to the usual noob clutter about **** that's been answered a thousand times before. So back off!!
Last edited by ErixHvn; 06-01-06 at 11:03 AM.
06-01-06, 11:10 AM
#18
Dont all the fc that come with lsd are clutch type???????
you can tell if it has a lsd by going under the car and looke at the diff, thier should be some square peice of metal that should have a sticker that says "limite slip differentail gear oil" well thats how i found out my 88Gxl has a lsd
you can tell if it has a lsd by going under the car and looke at the diff, thier should be some square peice of metal that should have a sticker that says "limite slip differentail gear oil" well thats how i found out my 88Gxl has a lsd
i guess you can tell by havin the car jacked up in the back, and haveing both wheels in the air, and spinning one wheel, if the other spins the same direction, then it has lsd. I got a n/a clutch type lsd just installed, but when i tried that, the wheels moved in the same direction, but sometimes the other wheel dosnt move at all when i spin one. is it worn out? i just broght it not too long ago also.
So, jack up the rear end, release the parking brake and turn one wheel. If the opposite wheel turns in the opposite direction then it's an open diff. If the other wheel turns the same way or doesn't turn at all, it's an LSD. Good luck.
probably the quickest way will be to check for the "LSD fluid only" tag on the fill plug of the diff.......
otherwise the jacking up and spinning the wheels method is next....
otherwise the jacking up and spinning the wheels method is next....
06-01-06, 11:18 AM
#19
In order of reliability use the following methods to check for LSD
-Open up the pumpkin:
(Though LSD is present, it could be worn out, damaged)
-Firewall plate indicates LSD:
(Though it indicates presence, differential could be swapped)
-LSD Sticker on pumpkin:
(Though it indicates presence, differential could be swapped)
-Jack up car and rotate one wheel, other wheel should rotate the same direction:
(Though LSD is present, it could be worn out, damaged)
-2 Marks during burnout:
(Could be open)
-Open up the pumpkin:
(Though LSD is present, it could be worn out, damaged)
-Firewall plate indicates LSD:
(Though it indicates presence, differential could be swapped)
-LSD Sticker on pumpkin:
(Though it indicates presence, differential could be swapped)
-Jack up car and rotate one wheel, other wheel should rotate the same direction:
(Though LSD is present, it could be worn out, damaged)
-2 Marks during burnout:
(Could be open)
Easiest way to tell (without being an expericanced driver and doing it by feeling) is to open the diff and see if the unit has cooling holes for clutchtype or is a sealed V-LSD unit.
06-01-06, 11:21 AM
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My5ABaby. Thanks Dude. Didn't find the tag with the mirror. I don't know if anyone's removed it when servicing the diff. Haven't done it since I owned the car. I guess I'll have to jack it up and turn the wheels.
Sorry if I got defensive w/ you but I just get that way when I feel like I got jumped on by those who jump to conclusions and then get more to jump on the bandwagon.
For those who still think that I'm the kind to clutter the forum with uneccesary posts can satisfy their curiosity by searching out my post. You'll soon see that I'm not the sort who will waste your time for something stupid.
Sorry if I got defensive w/ you but I just get that way when I feel like I got jumped on by those who jump to conclusions and then get more to jump on the bandwagon.
For those who still think that I'm the kind to clutter the forum with uneccesary posts can satisfy their curiosity by searching out my post. You'll soon see that I'm not the sort who will waste your time for something stupid.
Last edited by ErixHvn; 06-01-06 at 11:33 AM.
06-01-06, 11:22 AM
#21
Originally Posted by ErixHvn
My5ABaby. Thanks Dude. Didn't find the tag with the mirror. I don't know if anyone's removed it when servicing the diff. Haven't done it since I owned the car. I guess I'll have to jack it up and turn the wheels.
Originally Posted by ErixHvn
Sorry if I got defensive w/ you but I just get that way when I feel like I got jumped on by those who jump to conclusions and then get more to jump on the bandwagon.
06-01-06, 08:30 PM
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Thanks jekjekj.
Definitely dont see that tag. Never bothered to look before either until just this recently. Unfortunately when I bought the car years ago I couldn't tell the difference between an open and an LSD. Back then I was just another excited RX owner and not an enthusiast. Now that I think of it I know the original owner told me it was ordered from the dealer with an LSD so he could auto-X with it. And I know that I've turned the rear wheel when it was up in the air. The opposite wheel turned in the opposite rotation if I remember correctly but I cant be 100% sure since it's been a while. Before I jump to conclusions about the possibility I got ripped off, I'll break out the jack stands tomorrow if I have time just to be sure.
Would hate to think that I might have gotten ripped because I didn't know what to look for and how to tell the difference. But since I've had 2 tranny rebuilds since I've owned it (first one I got ripped too. Bearings failed after 12K and took out 5th gear teeth) I cant be sure if the tranny repair guy serviced the diff and didn't replace the tag.
Question though, Would a worn LSD behave like an open diff if the clutch plates are worn out? Right now there is some gear noise coming from back there when the vehicle is in motion but it comes and goes. Might try LSD oil if it turns out I really have one.
I've been pretty happy with the way this car has lasted over the miles (140k+) and years but there's just so many unusual noises from all over the vehicle it's been a nightmare to try to track them all down. I'd like to get to the trouble spot before it breaks down.
Definitely dont see that tag. Never bothered to look before either until just this recently. Unfortunately when I bought the car years ago I couldn't tell the difference between an open and an LSD. Back then I was just another excited RX owner and not an enthusiast. Now that I think of it I know the original owner told me it was ordered from the dealer with an LSD so he could auto-X with it. And I know that I've turned the rear wheel when it was up in the air. The opposite wheel turned in the opposite rotation if I remember correctly but I cant be 100% sure since it's been a while. Before I jump to conclusions about the possibility I got ripped off, I'll break out the jack stands tomorrow if I have time just to be sure.
Would hate to think that I might have gotten ripped because I didn't know what to look for and how to tell the difference. But since I've had 2 tranny rebuilds since I've owned it (first one I got ripped too. Bearings failed after 12K and took out 5th gear teeth) I cant be sure if the tranny repair guy serviced the diff and didn't replace the tag.
Question though, Would a worn LSD behave like an open diff if the clutch plates are worn out? Right now there is some gear noise coming from back there when the vehicle is in motion but it comes and goes. Might try LSD oil if it turns out I really have one.
I've been pretty happy with the way this car has lasted over the miles (140k+) and years but there's just so many unusual noises from all over the vehicle it's been a nightmare to try to track them all down. I'd like to get to the trouble spot before it breaks down.
06-02-06, 01:31 PM
#24
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Verified via the jack and turn wheel method, Wheeeeee, I do have the LSD!
Thanks to those who helped. There was no outside markings, tag, sticker etc.
that indicates an LSD at all but the wheels definitely turn in the same direction when in neutral. Now I'll have to change the diff oil w/ LSD fluid. Hope that helps with the noise I hear from back there.
I appreciate those who cared enough to advise without jumping to conclusions about my not reading the FAQ. My5ABaby, Despite our earlier differences you stuck in there to help. Shows you're a good man Charlie Brown. Thanks again.
Thanks to those who helped. There was no outside markings, tag, sticker etc.
that indicates an LSD at all but the wheels definitely turn in the same direction when in neutral. Now I'll have to change the diff oil w/ LSD fluid. Hope that helps with the noise I hear from back there.
I appreciate those who cared enough to advise without jumping to conclusions about my not reading the FAQ. My5ABaby, Despite our earlier differences you stuck in there to help. Shows you're a good man Charlie Brown. Thanks again.
