Gear Swap?
#1
s4 Tails for Life!
Thread Starter
Join Date: Feb 2005
Location: Dallas, TX
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
Gear Swap?
Pretty much I don't even need my 5th gear, even on the highway... the gears seems WAY too far apart to me. Can someone point me in the right direction on a gear swap? I searched and didn't find anything useful.
Thanks,
iSP33D-for-J3SUS
Thanks,
iSP33D-for-J3SUS
#2
Lives on the Forum
There are several ways of going about this. You can swap in a 4.3:1 ring and pinion from the GTUs. You can swap in a diiferent 5th gear from a different year. You can also do a tranny swap. The case from the SA/FB can bolt between the tailshaft and bellhousing of the FC tranny, and bolt right into the chassis. You can do the same with a 626 RWD tranny too apparently. You can also get a Miata tranny and swap the internals into the FC case with only minor mods. There's other more expensive things too, like getting a 4.7:1 or 5.12:1 rear end, but they're mainly for racing. You could also do some other tranny swap, and there's a few companies that offer dog gear conversions (with much lower, tighter gearing)for the turbo tranny's, but that's expensive $$$$$$$$$$$$$$$$$$$$.
#4
D1 Drifter Status
Join Date: Dec 2004
Location: Sacramento CA
Posts: 484
Likes: 0
Received 0 Likes
on
0 Posts
Is it possible to swap a custom 5th gear for lower freeway/cruising RPMs?
lol i know, complete opposite from this thread...but i do A LOT of freeway driving...1000+ miles a week...sometimes it'd be nice to do 90mph at 2k rpm
lol i know, complete opposite from this thread...but i do A LOT of freeway driving...1000+ miles a week...sometimes it'd be nice to do 90mph at 2k rpm
Trending Topics
#8
s4 Tails for Life!
Thread Starter
Join Date: Feb 2005
Location: Dallas, TX
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RXgirl7
i swapped in miata gears with EXCELENT results. shorter gears, better acceleration(tall *** 1st tho). i would reccomend it to NA owners.
And what are the stock N/A 2nd gen (i.e. mine; 1988) gear ratoios compared to the miata ratios, etc?
iSP33D-for-J3SUS
#9
I'm awesome!
Join Date: Apr 2004
Location: Greenville, SC & Atlanta, GA & Clovis, NM
Posts: 1,311
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by reatrdedspleen
...sometimes it'd be nice to do 90mph at 2k rpm
#11
The Cause of Death
manual tranny with 4.10 rear end:
1st: 3.480:1
2nd: 2.001:1
3rd: 1.370:1
4th: 1.00:1
5th: .697:1
That's the final drive ratio, all gears included.
I'm in the midst of changing the internals of an S4 LSD from an auto GXL into the case of my S4 open diff, with 4.10 gears. I've been doing a bit of research...
James
1st: 3.480:1
2nd: 2.001:1
3rd: 1.370:1
4th: 1.00:1
5th: .697:1
That's the final drive ratio, all gears included.
I'm in the midst of changing the internals of an S4 LSD from an auto GXL into the case of my S4 open diff, with 4.10 gears. I've been doing a bit of research...
James
#12
s4 Tails for Life!
Thread Starter
Join Date: Feb 2005
Location: Dallas, TX
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by classicauto
iSP33D-for-J3SUS
#14
#15
D1 Drifter Status
Join Date: Dec 2004
Location: Sacramento CA
Posts: 484
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by IaMtHeRuThLeSs1
Your car wont make enough power at 2k rpm to keep it at 90mph
Id imagine that at 90mph if i were at 2k, it would hold it there just fine. maybe not up a hill. but flat to moderate uphills, no problem
#16
Caramelldansen
Join Date: May 2005
Location: SF Bay Area, California
Posts: 1,182
Received 0 Likes
on
0 Posts
Originally Posted by reatrdedspleen
I hear a lot of people talk about how they have no power in their 5th gear. idk mine makes plenty! makes enouh that i can go from 80 to 115 without any trouble and it dosnt take long either.
#17
s4 Tails for Life!
Thread Starter
Join Date: Feb 2005
Location: Dallas, TX
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
I'm interested in this GTUs gear swap... how much of a difference would it actually make? Could I do the work myself with a good tutorial? Also, where would I find the GTUs parts? Junkyard? Or can I buy them from a dealer / online store?
iSP33D-for-J3SUS
iSP33D-for-J3SUS
#19
Rotary Enthusiast
Join Date: May 2005
Location: bartlett IL
Posts: 919
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Bukwild
last I knew Tri-point engineering had 4.30 and 4.60 gear sets for $550. Someone on this forum has 4.60 gears in his 2nd.
Last edited by tinvestor; 03-25-06 at 10:36 AM. Reason: sign
#20
XBL** Ownicus
iTrader: (2)
Join Date: Mar 2004
Location: St. Paul, Minnnesota
Posts: 1,529
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Tokyo-RX7
#21
IT LIVES!!
Join Date: Apr 2005
Location: Manhattan Beach, CA
Posts: 466
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by uRizen
Hmmm, that's a very interesting swap. Assuming the gears and synchros are in decent shape on the new internals, is this something you could do on your own w/o any real special tools? Do the internals pretty much just drop in the FC case?
the GTUs rear end is hard to find, i believe theres a used one at mazdatrix now.
i would reccomend the miata swap, but that is my personal opinion. if there is a mazfest again this year, ill be giving rides in the car, for anyone who is interested in checking out the results of the swap
#22
Senior Member
Join Date: Apr 2004
Location: South Jordan UT
Posts: 453
Likes: 0
Received 0 Likes
on
0 Posts
I'm kindof suprised noone has mentioned this yet but the S4 turbo transmissions have a shorter 5th and the ratio spacing feels much more natural than the big jump to the NA 5th. I say go S4 T2 trans and rear end and then if you decide for more power later then you have the driveline strength that you will need to handle it. I love the T2 ratios.
Thread
Thread Starter
Forum
Replies
Last Post
rgordon1979
3rd Generation Specific (1993-2002)
40
03-15-22 12:04 PM
24seven_dada
3rd Generation Specific (1993-2002)
20
11-10-18 12:03 PM
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM