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 Post subject: Any Difference ??
PostPosted: Sat Oct 13, 2001 5:02 pm 
I was just wondering if there is any difference in the tranny between a 1.3 GT and the regular 1.3 ? Any info would be greatly apprieciated. <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sun Oct 14, 2001 1:26 am 
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Joined: Tue Aug 21, 2001 9:19 am
Posts: 971
Location: Canada
I think the differentials are heavier on the GT trans. The gearing is different also <p>Keep those RPM's high!www.lobase.homestead.com/lobase.html</p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sun Oct 14, 2001 3:04 am 
The ratios are different on Australian Swifts, don't know how these ratios apply to other countries.<br><br>GTi<br><br>1st 3.416<br>2nd 1.894<br>3rd 1.375<br>4th 1.030<br>5th 0.870<br>Final 4.105<br><br>GL<br>1st 3.416<br>2nd 1.894<br>3rd 1.280<br>4th 0.914<br>5th 0.757<br>Final 3.523<br><br>Jezza. <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Mon Oct 15, 2001 3:28 am 
All right, appears to be a difference then. Thanks guys.<br> <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Mon Oct 15, 2001 12:38 pm 
AT least for US cars, there's no difference between the GT gear ratios and the other models. The only thing that is different is the final drive ratio which is 4.105 for GT and 3.523 for the other models. This means that if you want to use a GA or GS tranny in the GT you'll have to take out the gears from the donor's secondary shaft and fit them to the GT's shaft. This needs to be done because the final gearing is a matched set so if you want to keep the 4.105 ratio you will need both the shaft and the "big drive" gear from the GT's tranny, unless you find a 89-94 3 cyl GEO Metro tranny, it's identical to GT's tranny. I know 'cause I had a 3 cyl. and swapped trannies after opening them for a detailed inspection. I even heard that 95 - up Geo's used a final drive ratio of 4.33, but I'm not sure on that.<br> <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Mon Oct 15, 2001 2:26 pm 
Gotta watch those 89-94 Metro trannies. If it comes out of an XFi the final drive is 3.something, and if it's out of a convertible, the final is 4.39. Also, at least on the 91 convertible, there's one mounting location that's missing (the one near the oil pan that connects to an engine mount bracket, not to the block) <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Tue Oct 16, 2001 10:30 pm 
Also the later model Metro trannies use a 3.79 final drive in the 4cyl & a 4.39 in the 3cyl models.<br><br> <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sat Oct 20, 2001 9:06 pm 
so, will tranny from 3cyl. bolt-in to 4 cyl( dohc, sohc)motor with out any mods or some modification is required. and which clutch and presureplate should be use: can it be from 4 cyl. or it should be only from 3 cyl. ?<br><br> <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sun Oct 21, 2001 9:42 am 
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Senior Swift Guru

Joined: Sun Sep 02, 2001 11:55 am
Posts: 2595
Location: Calgary, Alberta
You have to make sure you use the appropiate clutch/pressure plate/flywheel for the type of motor you want it to be on and the tranny does absolutely bolt up. As is said, the case on the 3cyl. tranny only varies by a lack of ability to use a bolt on an extra bracket on the Gtis on the underside.<br><br>I currently have been using a 3 cyl. tranny through all my NOS abuse and such this past season.<br><br> <p><br><a href="http://www.teamswift.net"><img src="http://members.home.net/2832075173/pics/Swiftafter1c.jpg"></a></img><br>Kyle Jones <b>1989 Suzuki Swift GTi</b><br>Your friendly TeamSwift Op.</p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sun Oct 21, 2001 3:33 pm 
I've got the original Metro tranny in my GTi powered Metro Convertible. I modified the tranny by welding on an aluminum block to create the missing mounting lug. I didn't have to do it, I could have just left out the one bolt but I wanted to practice welding aluminum. <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Mon Oct 22, 2001 8:15 am 
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Joined: Tue Aug 21, 2001 7:05 pm
Posts: 30
Location: Sterling Heights, MI
The other difference not yet mentioned is that the GT/GTi uses stronger syncronizers. These are completely diiferent parts between a GA/GS and GT/GTi. <p></p><i></i>


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 Post subject: Re: Any Difference ??
PostPosted: Sat Aug 14, 2010 3:10 am 
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Joined: Tue Oct 24, 2006 3:09 pm
Posts: 4998
Location: Palm Springs: Too hot from June to Oct.!
Rather than start a new thread, I thought I'd resurrect this old one.
What is the difference between a standard transmission and a GTi/GT/Sprint Turbo transmission?
(I'm guessing that's what he meant; it's one of the first threads to ask the question!)
This question has been asked many times in many ways on the Teamswift site.
The manual gives this answer:
"Though the 2 pinion type is used in the standard transmission, the 4 pinion type is used ...in order to get enough durability against raised engine performance" Well, read it for yourself:
Image

We throw the 2 pinion vs. 4 pinion words around with authority, but if you take a look at the illustration, we see that the FSM falls a bit short, for there are actually THREE pinions/pins. But again, take a look at it yourself:
Image
Items 4 and 5 are the pins in the differential, and you can see there are a total of THREE, not 4 as stated in the FSM.
The FSM covers its butt by using the phrase 'four-pinion type', so we don't need to actually fault it.

So let's translate that into real terms. Suppose you wanted to find a transmission which had the stronger differential.
What would it look like?
If you look into the area where the drive axles go, you would see one long pinion (#4 in the drawing above) and part of the other two pinions (#5 in the drawing above).
Here, I've pointed to one of the #5 pins with a white arrow:
Image

Reading through this old thread was quite therapeutic.
I hope this little post helps you if you are looking for a particular type of transaxle.

Now, a couple of pictures of a plain transmission and a later model GT 'black box' would really set this thread off.
Gee, it might even warrant a sticky!
:lol: :lol: :lol:

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 Post subject: Re: Any Difference ??
PostPosted: Sat Aug 14, 2010 10:59 am 
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The Smuggler
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Joined: Thu Jun 10, 2004 12:34 am
Posts: 2885
Location: Surrey, BC CANADA
Hi Phil geat idea to help people find a better transmission when out shopping for one.

in my experience the final gear on the diff should also be a heavier set than on the stock GEO tranny.
which also helps in making this differential stronger.
Here are some pics from the tranny carnage section here on TS on the 2 pinion diff
Image
Image

_________________
"I love the whine of a turbo in the mornin" 1991 Sprint Turbo
"I also love the 7500 rpm scream of a DOHC" :razz: 2X 1989 Swift GTi's a 92 and Jr's new 93 GT

Keep your eye on the boost guage!
And I love this one!
"Dale Jarrett's crew chief" "Drive it like ya STOLE IT!"
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 Post subject: Re: Any Difference ??
PostPosted: Mon Apr 13, 2015 7:59 pm 
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Joined: Mon Jun 16, 2014 10:10 am
Posts: 338
Location: Palm Springs, Calif
I have been getting some requests for information on how to identify a Turbo Sprint Tranny.

Since this thread has lost some of the pictures above, I thought I'd bump it.

A Turbo Sprint tranny has some identifying characteristics.
The black bracket on the outside by the fill cap/dipstick:
Image
is one 'easy to see' identifying characteristic, but is not 'definitive' as someone could have removed it.

Here are two more views of that little black bracket:
Image

Image

Next, looking in the output shaft, you should see this pin:

Image

which is NOT visible in an NA Sprint transmission. It is barely visible and is coming down from the 12 o'clock position, meeting with the horizontal pin.

I do not have a picture comparing the diameter of that horizontal pin's diameter vs. the NA Sprint tranny's pin, which also differs.

Next time I have an NA tranny out, I'll try and remember to take a picture of it for comparison.

If any of you have pictures to help out, here would be a good place to post them.


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