TeamSwift

Home of the Suzuki mini-compacts ! Your Home for all things Suzuki Swift, Geo Metro, Holden Barina, Chevy Sprint, Pontiac Firefly, and Suzuki Cultus. TeamSwift is a technical performance oriented community!
It is currently Sat Oct 21, 2017 6:21 pm

Underbody braces, turbos and more!

All times are UTC - 5 hours




Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Sat Oct 05, 2013 7:07 pm 
Offline

Joined: Sun Jul 08, 2012 6:02 pm
Posts: 18
Location: Florida
Hey there guys, I am after a 3.80 final drive gear ratio for my 91 Suzuki swift gt, but I would like the extra strength of the GT differential since I have 200+ whp, if I where to acquire 95+ metro or XFI transmission with the 3.80 final drive ratio would It be possible to swap just the differential assembly and bolt the 3.80 ring gear to the GT differential and install it into the metro / XFI transmission housing?
Thanks.
Steve.


Top
 Profile  
 
PostPosted: Sat Oct 05, 2013 11:46 pm 
Offline
User avatar

Joined: Sun Dec 05, 2010 5:56 pm
Posts: 1023
Location: Wahiawa, HI
Yes.

All those parts are interchangeable--what you will lose is the bracket to hold up your cast-iron GT exhaust manifold, so get a header, or just swap the 3.80 crown wheel with the GT diff bolted to it and pinion into the GT housing, that works too.

Just so you know, you are crazy though--I can't think of many good reasons to go taller. Get a 4.39 and blow everybody away...

Also, 95+ metros are 4.39 in the G10 models, not 3.8.

_________________
Quote:
No one expects the Spanish Inquisition!

Spanish Inquisition Racing chip burning service--build yourself a custom chip!
http://www.teamswift.net/viewtopic.php?f=17&t=57216


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 1:03 am 
Offline

Joined: Thu Jul 20, 2006 7:17 pm
Posts: 1405
Location: Alberta, Canada
95+ metros and swifts in north America have 3.79 ratio when equipped with 1.3L g13 engines, both 8 and 16 valve options. The 16v also has a lower first gear ratio, 98-01 models. 3.79 final will swap into your current gt gearbox. The ratio change will actually put more load on the internal gears due to less torque multiplication in the final drive. I learned this from a knowledgable member and it does make sense. At 200hp you are likely on the ragged edge of gearbox reliability I suspect!

_________________
1995 Swift w/16V 4.39s, 3tech cam, Esteem t-body, Header, needs more.
1995 Gt Mustang "Boss Shinoda" package.
1999 F150 4x4 Supercharged
1967 Mustang 428 auto, never ending expensive project
1993 Civic si h22a, fell in my lap, couldn't resist!


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 1:33 am 
Offline
Teamswift Racer
User avatar

Joined: Fri Apr 02, 2004 5:56 am
Posts: 2328
Location: Christchurch NZ, quake capital
Just a couple of points to add to what the other guys have mentioned, the gt case has an extra lug for a support bracket so it pays to use the gt casing if you can.

Stay away from the lower 1st gear of the later 98-01 models, the gap from 1st to 2nd is already rediculousy wide, you want a low km 95+ 1.3, the 4 cyl versions have a 1' wide crownwheel where as the xfi 1.0 has a 3/4' wide 3.79 crownwheel.

Personally I'd just stick with the 4.1...200whp + small framed swift box = bang, snap & pop


Top
 Profile  
 
PostPosted: Sun Oct 06, 2013 9:16 am 
Offline

Joined: Sun Jul 08, 2012 6:02 pm
Posts: 18
Location: Florida
Ok, thanks for the responses, I already don't have the stock cast iron manifold as its boosted, the reason I was after the 3.80 gear is due to crazy wheel spin in 2nd and first is useless, also I go on long interstate drives occasionally and interstate rpm just seems to high with the 4.10, I was also looking at trying the phantom grip limited slip, I've read some reviews on here about it and I've seen good and bad things about it but think I will give it a try.

Steve.


Top
 Profile  
 
PostPosted: Sun Oct 13, 2013 11:51 am 
Offline

Joined: Thu Jul 20, 2006 7:17 pm
Posts: 1405
Location: Alberta, Canada
Steve, if you make the jump to 3.79's, could you please pop back in for a report on how you like the gearing? My car is turbo gt with 4.39 ratio, first is really useless as well, lots of wheelspin in second as well. Runs down the highway nice, but sometimes I cruise as high as 4k in 5th which is pretty high, although the eng(and fuel mileage) seem ok with it. I have a cable shift sedan trans with 3.79 final drive I may swap in, but wad uncertain due to the ratio change. I'd gain strength but lose gear ratio. I'd say I'm less Hp than you, basically stock with about 6psi( maybe 150-160hp according to my timeslip mph-97mph). Haven't broken a trans yet, but it's certainly a possibility. Have you broken one yet?

_________________
1995 Swift w/16V 4.39s, 3tech cam, Esteem t-body, Header, needs more.
1995 Gt Mustang "Boss Shinoda" package.
1999 F150 4x4 Supercharged
1967 Mustang 428 auto, never ending expensive project
1993 Civic si h22a, fell in my lap, couldn't resist!


Top
 Profile  
 
PostPosted: Sun Oct 13, 2013 1:33 pm 
Offline
Moderator
Moderator
User avatar

Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
Steve-H wrote:
Ok, thanks for the responses, I already don't have the stock cast iron manifold as its boosted, the reason I was after the 3.80 gear is due to crazy wheel spin in 2nd and first is useless

Steve.


If you think you have bad wheelspin now...

A 3.79 will make it worse.

_________________
Contact 3tech: g10pro@rocketmail.com


Top
 Profile  
 
PostPosted: Sun Oct 13, 2013 5:29 pm 
Offline

Joined: Sat Oct 15, 2005 11:43 pm
Posts: 776
Location: Greer,South Carolina USA
Get a set of taller tires for the long trips. That's what I do. I drove mine from South Carolina to Geoplooza this year and got average of 40 mpg. With my 185/65/14's on my car helped out a little at 70 miles per hour.

_________________
Cars and Harleys


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 6 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group