ok, First of all ive done the search and came to absolulutely no avail - so dont suggest i do that. Ive been looking for information pertaining to transmissions that are and can be used on the rx7, various years and models. I was suprised to not find a write-up on this.

There are alot of "tII's" thrown around, and to be honest with everyone i had no idea what the heck that was until i asked a friend. - thats besides the point here. I have done some research on this mysterious "TII" transmission and found that and the additional below - again this is basic information on the transmissions the i could find since it seems noone likes to use the tag number or model numbers anymore.

From what i have discovered:
NA (non turbo for search purposes) rx7 uses the (4?)/5-speed B2000 or B220(0) model transmission - i have not been able to find the physical differences. This is listed as same transmission used on the following according to drivetrain.com:
FORD
4 Speed Diesel 1983-87
5 Speed Diesel 1984-87
Mazda 626 5 Speed 1979-82
808 4 Speed 1972-77
GLC 4 & 5 Speed 1977-82
GLC Wagon 4 & 5 Speed 1981-86
MAZDA
Miata 5 Speed 1991-96
RX7.. non-Turbo 5 Speed 1979-92
1200 Truck 4 Speed 1971-72
B1600 Truck 4 Speed 1972-76
B2000 Truck 4 & 5 Speed Gas 1979-87
B2000 Truck 5 Speed Diesel 1982-84

Weather or not the tailshaft sections or forward cases are the same i have no idea. Gear ratios may be different as well but i have no build specs on these transmissions. Its almost impossible to know the build specs without a serial number - thats if there are differences - i would like additional info on this if anyone has it.

Turbo cars "tII" use the Ford (toyo-kogyo) TK5 model 5-speed transmission which has over 50 different builds and designated sub-models that would be determined by the Tag number on the transmission. - or so i understand according to drivetrain.com. There is no "tII" designation on any of these applications, strictly Ford Truck or Turbo Rx7. This "TII" transmission is categorized as a Ford Truck transmission. Again i have no build specs (ratios, cases, etc) other than what info i can find for parts on drivetrain.com - im sure all that info is available if you search the vehicle application specs for that transmission info
Anyway the TK4/5 fit the following Ford/Mazda vehicles of various years - check to verify years because i dont feel like categorizing them:
84-87 Bronco II, Ranger and Aerostar, and apparently the turbo II rx7's - which for some reason isnt listed but the link suggest the Turbo rx7 IS a tk5.

On another note I trying to find info for the Borg & Warner t-5 conversion also. I have not found any information on this swap what so ever. I can only assume there is a bellhousing, crossmember, and several other conversions that must be done to use this transmission, but i have heard of this conversion being done.. Anybody have any information on this?

Again if anyone has any corrections, additions, etc put it down!
Thanks
Chris u

 

TII means the transmission found in 2nd generation RX-7s with 13b-T engine, aka the "turbo II". T2 or T II is not a transmission code. I do not know the transmission code for this transmission; it's not mentioned in the FSMs.

This transmission was revised to become the R15M-D used in the 3rd Gen RX-7. The major differences are mounting, the use of a pull clutch, and double cone synchros on 1st, 2nd, and 3rd gears. The gearing, center case, bearings, etc are the same.

 

Good information that you've posted there. Most members don't mention or deal with transmissions because they're mystical-voodoo-hoohaa-crazytalk to most of us. When they break, we take them to a transmission shop for rebuilding or replace them with a used unit from another rx-7.

 

how can u distiguish the difference between a na and turbo 2nd gen tranny physically and item number or code. thank you.

 

put a N/A and a TII tranny beside each other,,now pick them up..the N/A is way lighter!
also the output shaft splines are different.
The TII trans has a separate bell housing also.N/A bellhousing is incorporated into the housing.

 

cool thank you

 

hell yeah, could be useful to find a stronger and longer lasting transmission thank you for the write up and all the research...this will become extremely handy!

 

man after i saw the difference in the pictures i felt like an idiot. lol

 

thanks for the info man i already installed my new tranny a month ago.

 

for some reason they don't mention the rotary pickup model, which was the first design TK transmission, it was in essence a 4 speed version of the more current 2nd generation Turbo II transmission which then was adapted to a pull type clutch with powerplant frame mounting for the series 6 and later twin turbo FDs.

just so you don't think i'm nuts i slid under my 1974 REPU and took a picture of the case, looks pretty familiar no?



the u-joints in the REPU driveline are also conveniently the same as the ones used to rebuild the turbo driveshafts.

pretty amazing how old alot of this technology is that still is basically used today.

 

Yeah, the stuff going on in the 1-4th section of the gearbox is hardly magic. If it works, leave it alone I say.

Dave

 

yep but most manufacturers aren't content with that, make it lighter and more compact, shove more gears in there, etc. in the end the units became more fragile over time with many car makers. most of the basics of these cars were literally used for 30+ years with only minor changes made.