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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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04-10-2008, 03:06 PM
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#1 |
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Rotary Fanatic
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mazda miata gear box 13b tranny
has anyone done a mazda miata gears in a 13b tranny. i heard you take the miata tail shaft and gear box and use the housing of the 13btranny. i know its possible but i just wanted to know if anyone in this form has done it. i am going na and just trying to pick up a little more acceleration in second gear for autocrosssing.
thanks
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1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels. 
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04-10-2008, 03:08 PM
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Rotary Fanatic
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pics of the build. performance gains? how it seems to hold up? i have talk to rx7girl on nopiston.com just wanted a couple more opoions. thanks guys
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1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.
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04-10-2008, 05:09 PM
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My minds tellin' me no...
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It has been done, and there is not real benefit. There is a considerable amount of work to be done (input shaft needs to be modified and resplined for instance).
Changing the differential (a GTUs 4.33 gear ratio) is a good idea, and easier.
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1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5 |
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04-10-2008, 10:15 PM
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Rotary Fanatic
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i just need a shorter 2nd gear for auto crossing. that sounds better because that wouldnt bump me into prepared so i might just try that.
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1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.
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