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Old 12-15-2008, 03:09 AM   #21
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god I want a dog box just for the noise lol
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Old 12-15-2008, 04:00 AM   #22
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Quote:
Originally Posted by Joe Perez View Post
I don't believe I've ever seen a sequential gearbox installed in a Miata.
Look at mnet. I.e. Boig's car.
IIRC Mazdacomp sell the Miata tranny - a straight gear, sequential dog box and the name is MRT-1 (Mazda Race Transmission). According to Gibb the price is $14K.
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Old 12-15-2008, 10:01 AM   #23
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raceonusa used to get HKS S.MT's for 12k. They were for the FD's and at the time I had mine, I was super close to getting one but then I was 2k short of affording it. They dont carry them anymore but im sure it could be made to fit one of our cars
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Old 12-15-2008, 10:15 AM   #24
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I've looked into various options on gearboxs as i need a Auto.

As everyone else already said even used Sequential boxes go for 3 times the value of most Miata's.

How about a tranny with paddle shifts though?
Most paddle shift gearboxes have the option of push/pull on the gearstick sequential type gear shifting.

I made enquires about the various VAG DSG boxes, but they're 4wd and mounted the wrong way.
The BMW M3 SMG gearbox looked like a option, but electronically at least it's pretty much 1 package with the motor and the M3 motor is too tall to fit in a Miata.

There are some companies that offer paddle shift kits for various slush boxes, but i can't imagine anything worse than competing in circuit racing with a slushbox.

Is there not any US cars with DSG, SMG boxes that are rwd?



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Old 12-15-2008, 11:22 AM   #25
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Quote:
Originally Posted by mazda/nissan View Post
use on a race only application, where reverse wouldn't be necessary (i don't think it would at least).
Even in race apps, reverse is often required by the rules. SCCA Solo for sure, except in a couple of specific classes. But reverse is easy, Quaife sells an inline reversing box which is what all the MC-powered LoCosts use: AUTOTECH - Quaife Torque Biasing Differentials, Close Ratio Gearkits, Racing Transmissions, Custom Driveline Components


Quote:
Originally Posted by j_man
Look at mnet. I.e. Boig's car.
Got a link? You have aroused my curiosity.


Quote:
Originally Posted by eunos1800 View Post
I've looked into various options on gearboxs as i need a Auto.
(...)
How about a tranny with paddle shifts though?
Most paddle shift gearboxes have the option of push/pull on the gearstick sequential type gear shifting.
It depends on the auto.

The flappy-paddle gearboxes that you see on high-end applications like formula cars, Ferraris, and Nissan GTRs are internally quite similar to manual transmissions. They use syncromesh gears and have computer-controlled clutches.

But the vast majority of paddle-shift transmissions on "regular" cars are in fact bog-standard automatics where the control system for the hydraulic solenoids incorporates a semi-manual input interface. Internally, they still have torque converters and planetary gears. This is not to say that it's impossible to build an automatic which shifts nicely (the drag guys have elevated this to an art form) however I've never seen a Miata automatic set up in such a way as would be acceptable to a stick-shift purist.
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Old 12-15-2008, 12:40 PM   #26
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Quote:
Originally Posted by Joe Perez View Post
Got a link? You have aroused my curiosity.
Here is the web page of Boig's car (check pages 1,2,3 - alas no pic of the transmission itself):

http://www.cardomain.com/ride/350414

The $14K I remember from few threads at mnet where GibbP mentioned the sequential transmission bolted to Miata engine and the price
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Old 12-15-2008, 02:26 PM   #27
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I saw prices like $12K and $14K for places I've never heard of, when for that price I could get a gearbox from a very reputable company such as Hewland for about $8000 with 6 forwards and 1 reverse gear (this gearbox also has a Powerflow differential, which I have no idea what it is), and is capable of handling 240 lb. ft. of torque, which would put us in what about the 260-270 HP range?

Hewland FTR Gearbox Specification
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Old 12-15-2008, 02:35 PM   #28
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Old 12-15-2008, 03:14 PM   #29
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Quote:
Originally Posted by mazda/nissan View Post
One little problem- that box you linked to is a transaxle, intended for mid-engine applications. That's why it includes a diff.

Hewland has three front engine, rwd boxes, which are listed as "in tunnel" on their main specs page. They are the MVE-STA, the SGT, and the IGT-C.

I can't find the MVE-STA on any price sheets, but the SGT is 10,020 ($15,312) and the IGT-C is 12,385 ($18,926). And that's just for the bare gearbox itself- you still need to have a custom bellhousing made.
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Old 12-15-2008, 04:05 PM   #30
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Ikeya Formula makes an adapter for many cars to change the H-pattern to sequential, unfortunately they don't make one for the Miata....

PRODUCT INFORMATION
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Old 12-15-2008, 04:45 PM   #31
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well joe I take it those are for longitudinal mid engine applications? If so couldn't one just mount the gearbox back there corvette style? I know the space would be non existent, but if your already going through the hassle of mounting this to a car, making room shouldn't be out of the question
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Old 12-15-2008, 04:51 PM   #32
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karter i suppose one could adapt an RX-7 transmission to a miata. However the site lacks information such as how the hell this works. It might switch it to a sequential type gearbox, but I see no mention of dog gears.
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Old 12-15-2008, 05:35 PM   #33
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ok I hypothesize something. Get an FD transmission, buy the IKEYA sequential conversion, and then throw in the PFITZNER RX-7 gears, so that one could utilize a sequential clutchless shift. What do ya think?

I found some info on putting in the FD transmission

http://forum.miata.net/vb/showthread.php?t=224897

apparently there are also adapter plates, but i can't find them

Last edited by mazda/nissan; 12-15-2008 at 09:49 PM.
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Old 12-15-2008, 10:38 PM   #34
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Quote:
Originally Posted by mazda/nissan View Post
have you not seen the V8's people have made utilizing 2 busa motors and custom parts?

Hehe that's nice, keeps reving and reving. Fun stuff.
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Old 12-17-2008, 11:07 PM   #35
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ok well I got back information from Pfitzer aka PPG (didn't know they were one and the same) and

We are nil-stock on this product and will not be putting it back into production until we receive orders for 5 or more sets which may be mid this year. The cost was approximately $7800aud

so we're talking $5455.32 for the Miata dog gears, and then another $1573.03 for the Ikea sequential shifter for an FD (silly me forgot to ask about the RX-7's gears instead of the Miata's, but I am sure they are close in price). Throw in an FD transmission, some sort of fancy adapter plate to fit the transmission to Miata, and for $7428.35 (roughly) you could have yourself a bulletproof sequential gearbox for the miata.
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Old 12-18-2008, 12:41 AM   #36
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Just google ikeya formula, there is a small bit of info on it. It is an extremely well engineered piece that does the normal H-pattern movement for the transmission from the normal sequential motion the driver does. In other words, it does the H pattern shifting for you, transforming your experience into a sequential shifter.
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Old 12-18-2008, 12:59 AM   #37
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Quote:
Originally Posted by karter74 View Post
Just google ikeya formula, there is a small bit of info on it. It is an extremely well engineered piece that does the normal H-pattern movement for the transmission from the normal sequential motion the driver does. In other words, it does the H pattern shifting for you, transforming your experience into a sequential shifter.
yeah and thinking it was as simple bit of kit, I asked a few people I found who had them that if you kept upshifting it would unknowingly shift into reverse, but somehow depending on which car they have blocked out the reverse gear unless you pull a special tab. Really piece o' machinery.
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Old 12-18-2008, 11:00 AM   #38
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the ikeya thing looks nice
wouldn't sadev be able to make/convert a miata compatible sequential box?
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Old 12-18-2008, 01:25 PM   #39
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Apparently Quaife is currently in development of a Miata sequential gearbox for about $7500.
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Old 12-18-2008, 08:23 PM   #40
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Quote:
Originally Posted by GT3man2001 View Post
Apparently Quaife is currently in development of a Miata sequential gearbox for about $7500.
Cha ching... I guess if you really, REALLY want one, or are racing and have to have it to be competitive, but damn... There are some other things I would rather have for that kind of money; that is some significant opportunity cost.
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