First Gen Transmission
10-02-10, 01:14 PM
#1
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First Gen Transmission
Hey guys,
Recentally the transmission in my GSL SE has started to make grinding noises. I am worried this will mark the end of it soon. I have the option to get a GSL transmission, would this work on my SE? Would the gears be the same? Would i notice a difference?
Thanks,
Nathan
Recentally the transmission in my GSL SE has started to make grinding noises. I am worried this will mark the end of it soon. I have the option to get a GSL transmission, would this work on my SE? Would the gears be the same? Would i notice a difference?
Thanks,
Nathan
10-02-10, 01:18 PM
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im pretty sure the transmission bolts right in there...and i think the gears are gonna be a little shorter...if anything....your tranny might not even be bad, it just might be the throwout bearing
10-02-10, 01:33 PM
#3
HMMM>>>>>>> Right from the Archives!
https://www.rx7club.com/1st-gen-archive-71/transmission-transmission-interchange-information-783499/
Noise symptoms---
http://www.mazdatrix.com/g2.htm
Gearing-
http://www.mazdatrix.com/g1.htm
Amazing isn't it?
https://www.rx7club.com/1st-gen-archive-71/transmission-transmission-interchange-information-783499/
Noise symptoms---
http://www.mazdatrix.com/g2.htm
Gearing-
http://www.mazdatrix.com/g1.htm
Amazing isn't it?
Last edited by Rx-7Doctor; 10-02-10 at 01:36 PM.
10-02-10, 01:53 PM
#4
Wrkn Toyota, Rootn Wankel
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Someone mentioned to me that a member had made some sort of Franken transmission out of a second gen case, Miata gears and RX7 gears. Anyone know anything about that?
10-02-10, 02:04 PM
#5
HMMMMMMMM>>>>> Sounds like a "2nd Gen" question?
Oh wait, I actually spent 60 seconds and went to the 2nd gen section and found this 1 month old thread.
https://www.rx7club.com/showthread.p...ighlight=miata
Forgot to add you owe me $60.00 for research time. LOL
Oh wait, I actually spent 60 seconds and went to the 2nd gen section and found this 1 month old thread.
https://www.rx7club.com/showthread.p...ighlight=miata
Forgot to add you owe me $60.00 for research time. LOL
10-02-10, 02:23 PM
#6
The gsl tranny will bolt right in if it is 84/85, gearing difference is so slight you won't notice.
HOWEVER! A s5 low mileage tranny swap utilizing your gslse tail section is the ideal choice. You'll get a lower mileage unit plus the taller 5th gear will cut engine rpm by 500 at highway speeds. The 12a's lack the power to take advantage of this but the power and torque of the 13b SE is perfect!
HOWEVER! A s5 low mileage tranny swap utilizing your gslse tail section is the ideal choice. You'll get a lower mileage unit plus the taller 5th gear will cut engine rpm by 500 at highway speeds. The 12a's lack the power to take advantage of this but the power and torque of the 13b SE is perfect!
10-02-10, 02:37 PM
#7
It does not matter what year GSL it is! They all fit!
The S4 transmission from 87-88 has the tall 5th and the 89-91 S5 models without a LSD rear end have the same tall 5th. The LSD S5 equipped models do not have the taller 5th.
The S4 transmission from 87-88 has the tall 5th and the 89-91 S5 models without a LSD rear end have the same tall 5th. The LSD S5 equipped models do not have the taller 5th.
The gsl tranny will bolt right in if it is 84/85, gearing difference is so slight you won't notice.
HOWEVER! A s5 low mileage tranny swap utilizing your gslse tail section is the ideal choice. You'll get a lower mileage unit plus the taller 5th gear will cut engine rpm by 500 at highway speeds. The 12a's lack the power to take advantage of this but the power and torque of the 13b SE is perfect!
HOWEVER! A s5 low mileage tranny swap utilizing your gslse tail section is the ideal choice. You'll get a lower mileage unit plus the taller 5th gear will cut engine rpm by 500 at highway speeds. The 12a's lack the power to take advantage of this but the power and torque of the 13b SE is perfect!
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10-02-10, 03:29 PM
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I replaced my GSL trans with an SE trans, aside from 5th being taller in the SE trans there's no noticeable difference. Makes for a nice improvement in highway cruising. 3000RPM at 120km/h vs 3500.
10-02-10, 09:33 PM
#9
Wrkn Toyota, Rootn Wankel
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HMMMMMMMM>>>>> Sounds like a "2nd Gen" question?
Oh wait, I actually spent 60 seconds and went to the 2nd gen section and found this 1 month old thread.
https://www.rx7club.com/showthread.p...ighlight=miata
Forgot to add you owe me $60.00 for research time. LOL
Oh wait, I actually spent 60 seconds and went to the 2nd gen section and found this 1 month old thread.
https://www.rx7club.com/showthread.p...ighlight=miata
Forgot to add you owe me $60.00 for research time. LOL
10-03-10, 09:33 AM
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I wish I could get a super tall 5th for the highway in my SE. I haven't found a really tall gear in any Mazda, though, to swap.
10-03-10, 08:31 PM
#12
the gearing between an 84-85 GSL and GSL-SE transmission is identical other than 5th gear, which is taller in the SE. the 12A trans is a direct bolt on unit to the 13B in the SE. the only external difference is that the SE transmission has a dual vented bellhousing.
10-09-10, 12:27 PM
#13
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alright, i poured some transmission fix into it and it seems to have helped a bunch. I may be able to get a few thousand more out of it yet. Thanks for the info.
Nathan
Nathan
10-09-10, 09:57 PM
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i have a gsl trans in my se, when the se one failed. there is a small differnce. the gears are differnt but 3rd or 4th i belive...... and i can feel a small differnce in driving too, but i'm **** when is comes to my rides. i plan on rebuilding the se trans one of these days.....but for now the other trans work just fine.
10-09-10, 11:51 PM
#15
I don't get it? The question has been answered. What is the purpose of saying the same thing that has already been said?
Their is only a difference in the 81-83 transmission gearing in gears 1-3, 4th gear is always the same . The 5th gear on the Se and the 81-83 models is almost identical, it is the 84-85 12a models that have a taller 5th.
Their is only a difference in the 81-83 transmission gearing in gears 1-3, 4th gear is always the same . The 5th gear on the Se and the 81-83 models is almost identical, it is the 84-85 12a models that have a taller 5th.
i have a gsl trans in my se, when the se one failed. there is a small differnce. the gears are differnt but 3rd or 4th i belive...... and i can feel a small differnce in driving too, but i'm **** when is comes to my rides. i plan on rebuilding the se trans one of these days.....but for now the other trans work just fine.
