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dsm tranny

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Old Nov 23, 2004 | 02:32 PM
  #1  
stupidfastlaser's Avatar
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dsm tranny

ok this maybe the wrong place for this question but were brothers i have a 1992 eclipse gsx .i bought a jdm selectable tranny for it well we put the tranny in .the thing only has 35,000 to 45,000 k miles on it .it's also awd .when we take off at about 5,000-5,500 rpm in 1st it likes to pop out of gear ,also when i shift the car at about 5,500-6,000 rpm going from first to second second gear doesn't even catch but if you tone it down say about 5,000 rpm it will catch and that is the only gear that does it .i'm sorry if i am asking a dumb question but this has got me puzzled.and i also want to give all ya'll your props ,i love evo's and wish i can have one but can't afford it so i have the next best thing a 1992 eclipse gsx awd turbo



4g63 4 life
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Old Nov 23, 2004 | 02:37 PM
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From: Virginia
The JDM tranny has never been compatible with the DSM's. There is tons of info out there to support this. The final drive ratio comming out of the tranny from the JDM market and the USDM market are different. What this means is that your rear wheels are being driven by one speed (by the JDM transmission) and the front tires are being driven at another speed (by the USDM transfer case).

It's a small difference in the gear ratios, but enough to destroy a car on a street.
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Old Nov 23, 2004 | 02:42 PM
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Actually, before I say that.....

What does it say the final drive ratio is? Did you test that gear ratio before installing the tranny?

Above, I said it was incompatible because 99% of the time, they are. There are the few exceptions, but most of the time, people learn the hard way by burning up their center diff.
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Old Nov 23, 2004 | 02:47 PM
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From: Atlanta
does it do it often?

You may wanna check your shift linkage. I think adjusting that could help out.

If it's frequent in ONLY that gear, it's your syncro gear.
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