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yes. pull the stock tranny, install the 6spd. you'll need to use the 6spd mounting plate, shifter, and only 2 of the 3 bolts for the starter iirc.
 

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Ive been lookin in to this myself. I wanted to do it for extra durability, planning on 300+hp.
I may be wrong about this...but as I used to be in the 240SX/Silvia scene...it was known that the 6-speeds are actually WEAKER, due to skinnier gears to fit in the same space as a 5-speed. So, for those that are looking for higher horsepower/drifting applications, it is preferrable to use a 5-speed instead.

Like I said, I may be wrong...so don't flame me if I am! ^-^
 

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Depending on what gear ratio you have now, changing your rear end ratio may be relevant as well.
 

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running a 4.3:1 rear end on a 6spd would allow for nice N/A acceleration. More buzzy on the freeways, but nice for touge and city driving I think.
 

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IIRC you'll also need a 6 speed driveshaft. If you like to row the box then the 6 speed is the way to go. I admit driving my friends 10ae is a bit more entertaining in that area. I've heard its stronger too but don't quote me on that.

This should help with gearing: http://www.idsfa.net/miata/gearing.html
 

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I had looked in to this myself previously. The 6spd trans will fit, but you need a plate to mount the starter. BUT that's not all. You also need the rear end gearing to go with it. AND, if I am not mistaken, you also need the drive shaft. Any gains with the extra gearing is not worth the work/mods IMO.
The 5spd (and 6spd?) are borrowed from the RX7. The trans is pretty much indestructable from what I have heard from several mechanics....
 

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why would you need axles and clutch and flywheel? the clutch and flywheel on 1.6 and 1.8 are pretty much the same in the middle...thats how we can interchange flywheel and clutches...also .. axles? are we changing 1.6 diff to 1.8?
 

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You do need the drive shaft. When I bought the rear end it came with the driveshaft and axles. If I bought the tranny I would have had to buy the flywheel, clutch, and driveshaft separately. One of the Mazda places told me that you need the drive shaft cause the 1.6 is too small to match up with the 1.8. I think the 1.8 driveshaft is a little thicker.
 

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Did a little research, all you need is trans, plate, and rewire reverse switch. Starter can be reused with only 2 bolts. Rear is not required but have to pay attention to gearing. You can swap speedo gear for more accurate speedo. But any driveshaft, clutch and flywheel will work, but clutch and flywheel will have to match each other.
 

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Did a little research, all you need is trans, plate, and rewire reverse switch. Starter can be reused with only 2 bolts. Rear is not required but have to pay attention to gearing. You can swap speedo gear for more accurate speedo. But any driveshaft, clutch and flywheel will work, but clutch and flywheel will have to match each other.
You're right!!! =D>
I did that swap and it's that simple.
You might want to put a 3.9 gear ratio in the diff. but it is not necessary.
You could also use the 1.6 flywheel and clutch but you should go for a 1.8.
Serge
 

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just run the 5 speed till it breaks then try the 6 speed. if you know how to drive i am sure the 5 speed will hold up :)
 

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Yeah, but 6 on the floor is not as cool as 4 on the floor. What are you people thinking?
 

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I'd like a 6spd tranny once I get a 1.8 diff and whatnot....but thats pretty far down the line...and its mainly for the pimp factor...lol
Plus I already have a 5spd tranny with 30k miles on it, sitting in my room with an 1.6 Exedy clutch and 1.6 Fidanza flywheel. However, that won't be going in until I find a 1.8 to play with, and then swap in.

My question on the gearing is this:
If you swap to a 6spd, and you get a 3.9 or even a 3.6 rear end, how much will it change your top gear RPMs for freeway driving? I drive about 130 miles a week on the freeway on a stock 4.3, and I hate it. If I could drop the top gear rpms with a lower geared diff, I'd be quite happy. However, I'll only do that if I can maintain the close ratios of a 5spd tranny, with a 6spd tranny.
 
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