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PostPosted: Thu Jun 10, 2010 12:33 pm 
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Joined: Sun Apr 11, 2010 4:12 am
Posts: 5
Location: Ca. Desert
Hello All,

I have a 1997 Geo Metro LSI with a 1.3L that's has a transmission that is on her way out. I picked up a JDM transmission and it looks exactly the same as the one that is in the car now. I do not have any information about the donor car, or, the type of engine it was originally coupled to, ... so I am unsure if it has the same gear ratios.

How can I tell if this was from a 3 or 4 cyl engine?

The only thing I can see is their is a spot on the top of the transmission(s) and they both say, ... [ TYPE D ].

Does this identify the transmission as the same?

Thanks
Bill


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PostPosted: Fri Jun 11, 2010 12:20 am 
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Joined: Thu Jul 20, 2006 7:17 pm
Posts: 1405
Location: Alberta, Canada
I can tell with you with confidence it will work perfectly. To my knowledge all automatics have the same final drive and gear ratios, about 3.6:1 final drive maybe? Regardless they interchange without issue.

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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!


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PostPosted: Fri Jun 11, 2010 12:45 am 
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Joined: Mon Jun 18, 2007 1:35 pm
Posts: 2433
Location: Regina, SK
Make sure you change the filter on it, and use a good quality synthetic ATF such as:

Redline D4
Amsoil ATF
Mobil 1 ATF
MaxLife Dex/Merc

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My cars:

J. McBean: '98 Suzuki Swift 1.3L 16v SOHC 5sp+ "Mk5" Made in Canada
The Mini Rattler: '94 Suzuki Swift .993L 6v SOHC 5sp+ "Mk3" Made in Canada *The Winter Beater*
B. Berry: '90 Chevrolet Turbo Sprint 1.0L 6v SOHC 5sp+ "Mk2" Made in Japan

I got 18MPG in a 3cyl with a 5 speed manual 4dr, '93 Metro! :yeahyeah


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PostPosted: Fri Jun 11, 2010 4:22 pm 
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Joined: Sun Apr 11, 2010 4:12 am
Posts: 5
Location: Ca. Desert
Thanks guy's,

Just a heads up, ... I have looked up the serial # and it starts off with a (V), that means it's the same year, 97. As far as the gear ratio, I am still unsure.


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PostPosted: Fri Jun 11, 2010 6:11 pm 
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Joined: Thu Jul 20, 2006 7:17 pm
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Location: Alberta, Canada
I am sure, as stated before, it's the same.

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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!


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PostPosted: Fri Jun 11, 2010 8:06 pm 
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Joined: Mon Dec 01, 2003 12:47 pm
Posts: 11669
Location: columbus, ohio
i concur, the automatic transmissions were all the same from year to year and are interchangeable.

the only operational changes are dictated by the atcu used with the transmission and those are only the shift points with the rpms set by the electronics.

the exception would be if your jdm unit was the cvt in which case i would gladly take it off your hands for use when i build my electric metro. =)

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PostPosted: Fri Jun 11, 2010 9:45 pm 
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Joined: Sun Apr 11, 2010 4:12 am
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Location: Ca. Desert
Thanks guy's! :wink:


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PostPosted: Tue Jun 15, 2010 12:13 am 
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Joined: Thu Nov 24, 2005 12:45 am
Posts: 405
Location: Palmyra,VA
Yep they all swap 89-up. If the jdm trans was a 3cyl auto final drive will be different, but it will still work. Look in and count the ring gear on the diff.


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PostPosted: Thu Oct 07, 2010 7:04 pm 
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Joined: Thu Dec 11, 2008 6:16 pm
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Location: Fort Lauderdale, Florida
SO would the final drive ratio be higher or lower in the JDM 3-cyl automatic? Reason I ask is I am replacing my fried auto trans with a JDM unit. I do a lot of highway driving and want to know what to expect in noise levels/Mpg wise. Hopefully lower rpms?.


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PostPosted: Tue Nov 02, 2010 10:53 am 
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Joined: Fri Jan 15, 2010 2:26 pm
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Location: TX-USA
A member over at geometroforum went trough this recently, the 3cyl has a lower final ratio and a smooth cover on the end of the transmission that faces the frame, the 4cyl has a taller ratio, and a ribbed end cover. The smooth 3cyl cover touched the frame in his and caused a bunch of rattling, the 4cyl ribbed cover is shorter and clears the frame with the larger engine.
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'99 Metro Sedan Auto 4cyl, '91 Metro Vert 3/5, '91 Metro 5dr 3cyl auto


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