J-spec and non J-spec transmission difference?
Thread Starter
I am the Architect
Joined: Aug 2002
Posts: 164
Likes: 0
From: Wpg, MB, Canada
J-spec and non J-spec transmission difference?
Is there an actual difference between a J-spec and a North American transmission?
Are they not the exact same transmission?
Are they not the exact same transmission?
Wankler
Joined: Apr 2003
Posts: 1,565
Likes: 2
From: Kobe, Japan
From 91-95 yes, probably. After that, who knows. I've never seen any listed changes.
However, I have seen quite a few japanese FD 'troubleshooting' lists, and while many of the problems are the same (hoses, solenoids, etc), the 5th gear synchro issue has never been mentioned.
bottom line: I don't know either
However, I have seen quite a few japanese FD 'troubleshooting' lists, and while many of the problems are the same (hoses, solenoids, etc), the 5th gear synchro issue has never been mentioned.
bottom line: I don't know either
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Originally posted by WHIPSrx7
The explanation for the 5th gear synchro has an easier answer: After 1995, Mazda created an upgraded/improved 5th gear synchro. I just replaced my old one with the improved one.
The explanation for the 5th gear synchro has an easier answer: After 1995, Mazda created an upgraded/improved 5th gear synchro. I just replaced my old one with the improved one.
Thread Starter
I am the Architect
Joined: Aug 2002
Posts: 164
Likes: 0
From: Wpg, MB, Canada
So then there should be no conflicts with putting a J-spec transmission into a North American FD. It should be a direct bolt in. The reason I ask is that I have an auto and would like to do a transmission swap in the future and thought that if I could get a hold of a 96 plus transmission I could avoid the 5th gear synchro problem.
Originally posted by AUM
So then there should be no conflicts with putting a J-spec transmission into a North American FD. It should be a direct bolt in. The reason I ask is that I have an auto and would like to do a transmission swap in the future and thought that if I could get a hold of a 96 plus transmission I could avoid the 5th gear synchro problem.
So then there should be no conflicts with putting a J-spec transmission into a North American FD. It should be a direct bolt in. The reason I ask is that I have an auto and would like to do a transmission swap in the future and thought that if I could get a hold of a 96 plus transmission I could avoid the 5th gear synchro problem.
You may have already seen this site, but just in case, this is what I'm going off of. Notice that the TSB mentioned is dated 1-94. From this, I think that anything 94 or newer would already have the 5th gear synchro issues addressed. Also, I think there is some discussion of switching from Auto to Manual on this same site.
Do a search on this forum as well, I think the topic of JDM vs US Domestic transmissions have come up before.
Last edited by Sgtblue; Apr 14, 2004 at 02:51 PM.
Grumpy Lurker
Joined: Feb 2001
Posts: 462
Likes: 0
From: LA
There is seriously more to life and RX-7's than J-Spec and non-j-spec nonsense.
http://www.rotorsportsracing.com/per...drivetrain.htm
http://www.rotorsportsracing.com/per...drivetrain.htm
Rotary Freak
Joined: Oct 2002
Posts: 1,625
Likes: 0
From: Salem, IN
Originally posted by cagefreak
What about the "spirit r" 6 spd tranny? I've been wondering if it would be possible to put it in our cars. I have a 93 touring, just a thought.
What about the "spirit r" 6 spd tranny? I've been wondering if it would be possible to put it in our cars. I have a 93 touring, just a thought.
i just bought a used JDM tranny and will be installing it tomorrow. i'll let everyone know what i think of it after it's in and running
TIMEATK
Joined: Jun 2001
Posts: 208
Likes: 0
From: Silicon Valley, Ca.
Originally posted by spoolin93r1
the spirit-r has the exact same 5 speed as the rest of the newer FD's
i just bought a used JDM tranny and will be installing it tomorrow. i'll let everyone know what i think of it after it's in and running
the spirit-r has the exact same 5 speed as the rest of the newer FD's
i just bought a used JDM tranny and will be installing it tomorrow. i'll let everyone know what i think of it after it's in and running
Was wondering how the install went and how the jdm tranny feels.
airplane apex seals
Joined: Mar 2004
Posts: 552
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From: either sunnyvale or san jose
i have jdm tranny and can't feel a difference but doesn't mean there might not be one. i though the only difference between a us and jdm was just the turbos, at least when it comes to the trans and engine
Rotary Freak
Joined: Oct 2002
Posts: 1,625
Likes: 0
From: Salem, IN
Originally posted by cagefreak
Was wondering how the install went and how the jdm tranny feels.
Was wondering how the install went and how the jdm tranny feels.
PV = nRT
Joined: Jan 2003
Posts: 2,250
Likes: 0
From: New Zealand (was California)
Originally posted by AUM
So then there should be no conflicts with putting a J-spec transmission into a North American FD. It should be a direct bolt in. The reason I ask is that I have an auto and would like to do a transmission swap in the future and thought that if I could get a hold of a 96 plus transmission I could avoid the 5th gear synchro problem.
So then there should be no conflicts with putting a J-spec transmission into a North American FD. It should be a direct bolt in. The reason I ask is that I have an auto and would like to do a transmission swap in the future and thought that if I could get a hold of a 96 plus transmission I could avoid the 5th gear synchro problem.
PV = nRT
Joined: Jan 2003
Posts: 2,250
Likes: 0
From: New Zealand (was California)
Originally posted by cagefreak
right on, thanks for the input.
I personally was thinking about getting the GURU racing Dog Box setup. Anyone have this setup?
right on, thanks for the input.
I personally was thinking about getting the GURU racing Dog Box setup. Anyone have this setup?
Do you have any idea what you'll be getting into?
