better tranny (from another car) into my 7
11-23-05, 05:29 PM
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better tranny (from another car) into my 7
what will fit? i heard a miata will, but do you have to mod anything? and how would its lifespan compare? any suggestions would be great
11-23-05, 05:31 PM
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Originally Posted by DREYKO
what will fit? i heard a miata will, but do you have to mod anything? and how would its lifespan compare? any suggestions would be great
read this write up https://www.rx7club.com/2nd-generation-specific-1986-1992-17/miata-transmission-into-na-fc-results-481920/
11-23-05, 05:40 PM
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Originally Posted by DREYKO
the 3rd gen tranny doesnt fit does it?
I dont want to give you a fictatous answer on that. I would say no. But I believe the inner gears are interchangable. Just not the bell housings. Again I could be wrong.
11-23-05, 07:50 PM
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Originally Posted by DREYKO
the 3rd gen tranny doesnt fit does it?
I've been told an FD tranny isin't any tougher than a TII (FC) tranny. I don't think its a worthwhile mod, no improvement and its probably not a bolt on.
A 6 speed Miata tranny doesn't sound like a bad idea though.
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11-23-05, 10:03 PM
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The miata.net garage section (I was going to leave a link but I couldnt make it work) said that mazda has two transmissions, a non-turbo 5-speed and a turbo 5-speed. The miata and the RX-7 (FC) have different gear ratios the MX-5 has the gears for more top speed and the FC has gears for acceleration. The rearend on a 90-93 miata is 4.3:1, the RX-7 4.1:1 (I think) however it is the weak link in the miata drivetrain, most people with big horsepower in a miata are either very good at fixing diffs or have one from a RX-7.
Last edited by MazdaTed; 11-23-05 at 10:24 PM.
11-23-05, 10:42 PM
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actually you may go faster by leaving you transmission alone. some people with NA miatas who have put the NB miata 6-speed in have reported that they go slower scince they have to shift more.
My first post was written while thinking of the 5-speed tranny.
My first post was written while thinking of the 5-speed tranny.
Last edited by MazdaTed; 11-23-05 at 10:44 PM.
11-23-05, 11:04 PM
#12
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The Miata transmission is not "better".
The FD trans will not "drop in" - the input shaft is shorter, and even though you swap the bell housings, it will still not work.
The FD trans internals are basically the same as an S5 turbo trans.
-Ted
The FD trans will not "drop in" - the input shaft is shorter, and even though you swap the bell housings, it will still not work.
The FD trans internals are basically the same as an S5 turbo trans.
-Ted
11-23-05, 11:05 PM
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yes there is a 6 speed mazda gear box ,but good luck finding a used one. The mazdaspeed miata is a 6 speed ,and the engine uses a t-28 ball bearing turbo
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