i think because they are 04s and there was some sort of defect with the length of the shift linkage.

In all reality this will just be going into a street ported NA motor, so Im sure any trans will be able to handle the power. Sadly with the scarcity of FC transmissions they are either going up in price, or are in questionable condition.

really? i never seem to have problems finding them at the pull apart

It wasn't a defect, but there was a TSB put out and a different part available if the shift rod was at a diffrent spec.

It has nothing to do with power why these tranny's "break." I've never seen one break from torque input, that to me defines a weak tranny.

By the way, I have at least one n/a tranny if you're interested.... condition unknown, shipping would cost you more than the tranny...

If you wanan go all out, we offer fully rebuilt, cryo'ed, basically "blueprinted" trannies for the ITS racers that we have legions of... shoot em a PM if you're interested in that option

Any Mazda "Type M" transmission can be swapped in (all N/A RX-7'd, old B-series pickups, '04 and earlier Miatas, RWD 626's, etc.). This makes any number of gear ratios available. You can even mix/match 5th and reverse gears if you'd like. You will have to swap the housings (bell, intermediate, and extension) and also pay attention to the length of the input shaft. You can't swap the input shafts but you can turn down the longer ones to RX-7 specifications.

Swapping any tranny into an N/A 7 really doesn't make much sense (sans maybe a race car). Just get another N/A tranny, or do a TII tranny swap, and be done with it. It's more than strong enough, and many people run them on turboed cars and have no problems.

ITS racers usually strip the teeth off 4th gear after a few races.... These are 180rwhp race cars....

K. Sans race cars.

Are they shearing the teeth off both the input shaft and the cog on the mainshaft or just one of those? Just curious because I plan on road racing with my Miata transmission.

I've been trying to follow the bread crumbs you've dropped thus far, but I'm not sure if I've still gotten anything from your cues. maybe i'm slow. at any rate, what's the deal with the Rx-8 tranny? full commentary/dialog is fine with me. hell, even conjecture on your part is welcome.

for me, despite what I've been seeing people say about them, I can't say I was ever swayed into thinking of them as a lost cause. I had/have every intention of using mine in the event I decide to put an older 13B in my 8.

I always assumed input shaft issues and that was from simply reading between some of the lines of bullshit over at the Rx8Club. if I recall, one of the turbocharged 20B Rx-8 guys had his pulled apart and fashioned a custom input shaft for it. to my knowledge that was all he did, but obviously I can't say for sure.

so is that in line with whatever secret you hold?

... and just a general question since we're talking trannies ... are there any other models out that there that used the Type R? i'm asking simply because i'm curious if there would be any other choices for gear ratios outside of the T2.

My understanding is the Type R transmissions were used in turbocharged/heavy duty applications. So think turbo RX-7's, RWD 929's, later B-series trucks, etc. I've not read anything about people swapping gears with those, however. This page has some information toward the bottom: http://www.solomiata.com/Drivetrain.html.

since i had another 8 in with a "broken" transmission i figured i would take a picture for you..

http://imageshack.us/a/img534/4773/65w5.jpg
http://imageshack.us/a/img163/3904/9b4v.jpg
http://imageshack.us/a/img51/4039/2wyv.jpg


i have never pulled a 'turtle' out of any other early transmission, though they have different weaknesses.

was not turbocharged, did not have an engine swap, all 190ish whp glory of the renesis engine.

you did say that, correct? i suppose you are half right. the issue isn't with the amount of torque input, it is with the amount of output and the problems in the back half of the transmission.

I think I might go with a T2 swap. Im just trying to sift through all the chaff and figure out what I actually need for the swap. I know I need a T2 driveshaft, but there seems to be debate over which flywheel/clutch I need to mate it up to.

you will need a t2 flywheel and clutch to run the t2 trans. THat is if the t2 flywheel will fit. Im not sure what the diameter of the rx8 flywheels are.