2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

gears

Old Sep 17, 2001 | 09:21 PM
  #2  
HN's Avatar
HN
Full Member
Tenured Member 10 Years
 
Joined: Mar 2001
Posts: 183
Likes: 0
From: las vegas
4.10 is stock on all t2's. power band is totally different along with tranny ratios. i too was a ford man untili drove a t2.
Reply
Old Sep 17, 2001 | 09:23 PM
  #3  
Dak's Avatar
Dak
Information Regurgitator
Tenured Member: 25 Years
Liked
Loved
Community Favorite
 
Joined: Feb 2001
Posts: 1,994
Likes: 208
From: Sparta TN. United States
All of the TII's sold in the states had a 4.10 gear from the factory.Should be no problem on the highway.My GTUs has a 4.30 and it does just fine.
Reply
Old Sep 17, 2001 | 09:57 PM
  #4  
Flobb's Avatar
Rattle can retard
Tenured Member: 20 Years
 
Joined: Jul 2001
Posts: 660
Likes: 0
From: St. Peters, MO
Well Dak, you covered it. GTUs had 4.30 and everything else 2nd gen was 4.10

At least that's what I've learned in my time on the forum.
Reply
Old Sep 17, 2001 | 10:14 PM
  #5  
mazdaspeed7's Avatar
mad scientist
Tenured Member 10 Years
 
Joined: Feb 2001
Posts: 2,665
Likes: 2
From: Savannah, GA
You forgot about the auto's. Automatic coupes has 3.9 ratio, while the auto verts had a 4.1 ratio. Like everyone else said, all manual's had 4.1's, except the GTUs, which had 4.3.
Reply
Old Sep 17, 2001 | 10:30 PM
  #6  
Agent_D's Avatar
rawr
Tenured Member 20 Years
iTrader: (2)
 
Joined: Feb 2001
Posts: 2,331
Likes: 1
From: Silver City, NM
ha i got 5.12's in my 2nd gen
yea all 2nd gens are 4.10, and i think they do well with that ratio. i never understood why the mustangs and other cars had like 2.7 ratio's, lol just different i guess
Reply
Old Sep 17, 2001 | 10:31 PM
  #7  
TonyTurboII's Avatar
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
What did the Jspec Efinis have? How hard would it be to get ahold of those? And would it be worth swapping them?
Reply
Old Sep 18, 2001 | 12:08 AM
  #8  
Dak's Avatar
Dak
Information Regurgitator
Tenured Member: 25 Years
Liked
Loved
Community Favorite
 
Joined: Feb 2001
Posts: 1,994
Likes: 208
From: Sparta TN. United States
There was a special model in Japan.I'm not sure if it was the Efini model or not that had 4.3s in it.Mazdatrix,Racing Beat and Rotary Performance all sell 4.3 gearsets for both the Turbo and Non-Turbo models.I like the 4.3 in my car but that's all I know since my car came with it.Personally I would say yes but then again I've never really driven one with the 4.10 gears.If I ever get my TII project on the road I'll evetually put 4.3s in it.
Reply
Old Sep 18, 2001 | 04:20 PM
  #10  
C. Ludwig's Avatar
www.lms-efi.com
Tenured Member: 25 Years
Liked
Loved
iTrader: (27)
 
Joined: Mar 2001
Posts: 5,265
Likes: 146
From: Floyds Knobs. IN
Agent_D, who set up your 5.12s? What was the cost if you don't mind my asking?

Chris
Reply
Old Sep 18, 2001 | 08:32 PM
  #11  
SuperchargedRex's Avatar
Chief Knucklehead
Tenured Member 15 Years
 
Joined: Feb 2001
Posts: 337
Likes: 0
From: Tarrytown, NY
Mazdatrix used to carry a conversion piece that let you use the 1st gens ring and pinion in a 2nd gen, but they discontinued it awhile back.
Reply
Old Sep 18, 2001 | 08:36 PM
  #12  
photoresistor's Avatar
Full Member
Tenured Member 20 Years
iTrader: (5)
 
Joined: Aug 2001
Posts: 199
Likes: 11
From: PDX
Whats optimum, or better?
Reply
Old Sep 18, 2001 | 09:52 PM
  #13  
BhamBill's Avatar
Full Member
Tenured Member 10 Years
 
Joined: Feb 2001
Posts: 242
Likes: 0
From: Bellingham, WA
Originally posted by Agent_D
i never understood why the mustangs and other cars had like 2.7 ratio's, lol just different i guess
Would you believe gas mileage? With a real live V-8 you've got the grunt to cruise around at 1500 rpm. Our cars need revs if we're going to be able to drive them, V-8's don't. That's also what gives a new Vette a top speed of 170 or so.
Reply
Old Sep 18, 2001 | 10:10 PM
  #14  
mazdaspeed7's Avatar
mad scientist
Tenured Member 10 Years
 
Joined: Feb 2001
Posts: 2,665
Likes: 2
From: Savannah, GA
Another thing you forgot to mention about the Mustangs very low final drive ratio is that the tranny ratios are actually higher than the RX7 trannies. Therefore, the final needs to be lower to get the same overall ratio. But the part abot V8's having the low end and lower redline is more important.
Reply
Old Sep 18, 2001 | 10:23 PM
  #15  
TonyTurboII's Avatar
Glock Lover
Tenured Member 20 Years
 
Joined: Mar 2001
Posts: 2,223
Likes: 0
From: Currently residing in St Charles, MO
Originally posted by mazdaspeed7
Another thing you forgot to mention about the Mustangs very low final drive ratio is that the tranny ratios are actually higher than the RX7 trannies. Therefore, the final needs to be lower to get the same overall ratio. But the part abot V8's having the low end and lower redline is more important.
So what about the 5.10's? What would happen if I switch to those? Is it not feasable because of our tranny ratios?
Reply
Old Sep 19, 2001 | 02:06 PM
  #16  
SpeedRacer's Avatar
Formula Mazda Driver
Tenured Member 10 Years
 
Joined: Feb 2001
Posts: 680
Likes: 0
From: Portland, Oregon, USA
Well if you kind find some 5.12's you could use 'em, but your Highway Gas mileage is gonna suck, and your gonna be shifting mad quick yo. But it will make your car kick *** of the line and for doing the 1/4 mile and stuff...its a tradeoff...
Reply
Old Sep 19, 2001 | 02:43 PM
  #17  
C. Ludwig's Avatar
www.lms-efi.com
Tenured Member: 25 Years
Liked
Loved
iTrader: (27)
 
Joined: Mar 2001
Posts: 5,265
Likes: 146
From: Floyds Knobs. IN
The problem with the 5.12 and 4.88 ring and pinions is that they need to be modified to fit. They are sourced from the early RX3s and 1st gen RX7s. The pinion snout is shorter than a 2nd gens and the pinion gear needs to be cut in half, extended, welded back together and trued. Very expensive.

The only economical options are 3.90, 4.10 and 4.30.

Chris
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MILOS7
3rd Generation Specific (1993-2002)
2
Oct 9, 2015 02:19 AM
musker
New Member RX-7 Technical
1
Oct 1, 2015 05:58 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 10:29 PM.