FirebirdSlayer666

iTrader: (3)

That's a sin. Coffee cans on a 7

autopaul

sorry to bring up an older thread, but i really wanted to figure this out if anyone knows...


Quote:
Originally Posted by Michael_Rudy
If you get the housing from a rotary car preious to the rx7, the you can skip the step of having to get a TII flywheel and the correct 12a counter weight. You also don't need to get the TII slave, or starter

How would changing bellhousings accomplish anything?

could somebody please clarify this,,

say i get a bellhousing off a 74 rotary or any rotary car before the rx7 i can bolt that to the t2 tranny? and then it will work with my 12a flywheel clutch starter etc? i dont see that working,,

the only thing i could see is having to get custom clutch disk, allong with that?

or does it work with the stock t2 flywheel i dont get it,,,

i just want a way that i can get a good gripping clutch,, a turbo2 tranny, and as many of my 12a parts to work with it, for cheap... i dont want to have to search for some crazy 12a automatic counterwieght,,, and have to buy a lightwieght tII flywheel..

someone please clarify this...


thanks Paul

steve84GS TII

The older cars had removable bellhousings.The Type R TII trans is based on those old rib case trannies.
The difference is the older cars still used the smaller flywheels and 215MM clutch with N/A spline count,since they werent putting out the power that the TII lays down.Im not sure if the TII box will bolt to an older bellhousing,but even if it did,youd still have to get a special clutch to fit the larger TII input shaft.

The TII powerplant made use of an existing strong transmission made for the rotary in the 70's,but still required a bigger clutch/flywheel to be reliable(hence the unique,bigger TII clutch diameter and spline count.)

Using the older ribcase tranny/bellhousing would let you retain the FB's smaller clutch,flywheel and starter.Youd gain a stronger box,but not any increase in clutch.This can be remedied by buying a good aftermarket clutch.The big caveat is the old ribcases are getting harder to find,many are only 4-speeds and there were numerous internal changes made during the production run,so finding any gears,bearings or syncros can be a real challenge.There are also many reports of the old boxes being fragile inside,weak syncros being the most common complaint.

In my honest opinion,despite the mild/moderate work and cost to fit them up,the vast quantity of TII boxes out there and their good reliability record,makes the TII 5-speed the best way to go.And you automatically gain a bigger clutch assembely and driveline.

autopaul

ya im starting to think the same thing.

thanks steve84gs TII so its not possible to use a regular counterwieght? off my 12a i sure hope it is,,, cause good luck to me trying to find an automatic counterwieght,, will any years auto tranny counterwieght work if i do have to get one?.. cause i dont know what year my engines internals are from to be honest.. anywhere from 83-85

thanks for the help

Paul

steve84GS TII

83-85 12A all have the same weight rotors,thus the same weight counterweight.Just be SURE that your engine is of that series,before buying anything.....

On the stick shift engines,there is no rear counterweight.The weight is built into the flywheel,its not removable.
See the spot at 12'oclock and the lump of steel at 6'oclock on the engine side,thats the counterweight.....
http://www.mazdatrix.com/faq/flywheel.htm

On automatic cars,the rear counterweight is a seperate piece since there is no flywheel,just a thin flexplate that the torque convertor bolts to.

You can get new A/T rear weights from Mazdatrix for about 150 bucks....
http://www.mazdatrix.com/b5.htm

Michael_Rudy

Wow i completely forgot about this thread, and yes if you use a older rx3 rx3 repu or whatever bellhousing on the TII tranny all you will need to buy is a new clutch, your starter and everything will fit right in

REVHED

By the time you go to the trouble of swapping bellhousings and getting a custom size clutch disk it would've been just as easy to swap flywheels.

mattreeve

So does there have to be a stock 1st gen rear end on the TII tranny? Or can you stick a TII Rear end on a first gen ever seen it done?

steve84GS TII

Uh oh...................heh,heh......





"whispers".....Stock 1st gen rearend is fine,just make a custom driveline to connect the TII trans and FB rear......

Michael_Rudy

has anyone actually ever put a second gen rear subframe with suspention into a first gen? Seems like it would be alot of work for a little gain, the gsl se rear ends are pretty stroung

autopaul

so anyone got a automatic counterwight i can buy off them,, from 83-85?? for relatively cheap... ahah,,

so any lightwiegh t11 flywheel will work,? then i have to find a t2 starter,, etc.. well let the search begin...

the fc rear subframe will not "fit" in the fb unless you totally hack up the body... or remake the entire rearend using expensive suspension engineering software,, and spend allot of money fabricating the structure for it etc,,,, not worth it.... i started but gave up because i found an se rearend, may do the project later down the road if and when i have money and time to spare...

Paul

rennenMsports

that is interesting I have a customer that has a 74' bmw 2002 tii and put a 5 spd out of a 84' bmw 320i. Availability/common! ( bolt in except shifter linkage underneath car and a little clutch love) http://2002haus.com/kit/index.htm. I got on this galaxy cause of the 20b myth>.!?#$$$$$$

Mazda12AGS

I was keeping up with this thread till the guy with the BMW came along. I have to ask what the hell are you talking about.

rigrooster

swap the tail of the transmissions.put the first gen tail on the second gen transmission and it will put your shifter in the right place

rigrooster

I have a 87 13b and trans in a 84 gsl-se with 500cfm carb....she's a screamer

Mazda12AGS

A Turbo 2 trans has diffirent splines on the input shaft then a normal 13B, so you can't just swap the tailhousing and go.

slayerx7

iTrader: (4)

Is this post still being read?
Anyway, Im considering doing this myself, I wanted a higher gear ratio, for a higher top speed...
So I would say get the 2nd ged tranny, Open up both trannys and swap the guts of the 2nd gen tranny into the 1st gen housing... That way you get stronger gears, higher top speed (but not as quick) and dont have to worry about drivelines counterweights or any of that stuff.
Ive heard this can work, I havent tried it myself so I dont know for fact, but I will try as soon as I can find one

steve84GS TII

I highly doubt the Type R internals will bolt into a Type M case.They are completely different boxes,and besides,the ribcase housing of the Type R (TII and FB) tranny is part of its strength.

Theres really no reason to try and hybridize or alter the TII trans much,for 1st gen implementation,its really not a hard swap.If you wanna install one,yes it will require a little money for a flywheel and a small amount of fabrication for mounting.But if you have the torque and power to NEED a Type R tranny,then the expendature and work to install one is minute, next to the work/money youve likely done under the hood beforehand.