What transmissions and turbos do our cars come with?
Thread Starter
Dusty hood, empty bay
Joined: Oct 2003
Posts: 973
Likes: 0
From: Charlotte, NC
What transmissions and turbos do our cars come with?
A friend of mine I met at college recently is very interested in the RX7. He keeps asking me what transmission and turbo we have. I've no clue and did a brief search on trannies... Saw nothing. So does anyone know that feels like sharing it? He keeps mentioning it and wondering..
Joined: Oct 2003
Posts: 11,576
Likes: 27
From: Morristown, TN (east of Knoxville)
The nonturbo tranny is a mazda M gearbox, similar to the miata and older b2000, while the turbo tranny is a mazda R gearbox shared with the FD. Thats about all I know about them. I dont know of any other vehicles that share these trannies.
Thread Starter
Dusty hood, empty bay
Joined: Oct 2003
Posts: 973
Likes: 0
From: Charlotte, NC
Ah. Thanks Kevin 
He was wondering if it was some.... Ford tranny. Don't remember what. He said something about he was thinking if I ever needed to replace it and if it were one of those it'd be easy to find. Dunno, he keeps asking about various things. He's got insanely interested in the RX7 since he found I have one. Rode in it the otherday and thought it was awesome hehe.
He was wondering if it was some.... Ford tranny. Don't remember what. He said something about he was thinking if I ever needed to replace it and if it were one of those it'd be easy to find. Dunno, he keeps asking about various things. He's got insanely interested in the RX7 since he found I have one. Rode in it the otherday and thought it was awesome hehe.
Trending Topics
Joined: Jun 2001
Posts: 3,106
Likes: 0
From: London, Ontario, Canada
Originally Posted by MaxDuo
He was wondering if it was some.... Ford tranny.
Joined: Dec 1999
Posts: 7,855
Likes: 517
From: Behind a workbench, repairing FC Electronics.
See the following:
http://www.mazdatruckin.com/B2200/Transmission.html
And also:
http://members.aol.com/solomiata/Drivetrain.html
Enjoy.
Originally Posted by MazdaTruckin website transmission modification article
Solomiata references 3 types of Mazda 5 speeds.
* Type I is the really early style transmission used in the RX-2, RX- 3, and RX-4. These where known to be pretty stout transmissions that the later Type IIIs where modeled after.
* The Type II also known as the Model M trannies is what is used in the B2200/B2000. The model tranny in my 91 B2200 is a M519. These trannies where only used in naturally aspired (non-supercharged) cars. These cars include RWD 626, 79-85 RX-7, 86-91 NA RX-7, B2000/2200 truck, and Miata. The main difference in these transmissions are the gearing, bell housing and tailshaft, making these the key interchange parts. The bell housing is basically an adapter to whatever block you are using. It is stated that input and output shaft lengths may very .5" between some model trannies so be cautious which tranny you select.
* Type III or Model R trannies are used in the turbo vehicles. These transmissions are based off the Type I transmissions and have a better synchronizer design and beefier output shafts. Output shaft diameter was increased from 15/16" up to 1" I have not seen parts from these to know if the synchronizers are interchangable with Type II trannies. These trannies where used in the turbo RX-7's, 929, B2600, and MPV.
* Type I is the really early style transmission used in the RX-2, RX- 3, and RX-4. These where known to be pretty stout transmissions that the later Type IIIs where modeled after.
* The Type II also known as the Model M trannies is what is used in the B2200/B2000. The model tranny in my 91 B2200 is a M519. These trannies where only used in naturally aspired (non-supercharged) cars. These cars include RWD 626, 79-85 RX-7, 86-91 NA RX-7, B2000/2200 truck, and Miata. The main difference in these transmissions are the gearing, bell housing and tailshaft, making these the key interchange parts. The bell housing is basically an adapter to whatever block you are using. It is stated that input and output shaft lengths may very .5" between some model trannies so be cautious which tranny you select.
* Type III or Model R trannies are used in the turbo vehicles. These transmissions are based off the Type I transmissions and have a better synchronizer design and beefier output shafts. Output shaft diameter was increased from 15/16" up to 1" I have not seen parts from these to know if the synchronizers are interchangable with Type II trannies. These trannies where used in the turbo RX-7's, 929, B2600, and MPV.
And also:
Originally Posted by SoloMiata Drivetrain Interchange Guide
Mazda has two 5 speed transmissions. One is used in NA applications (AKA 'type 2' or Model M) and came on such cars as the RWD 626, 79-85 RX-7, 86-91 NA RX-7, B2000/2200 truck, and Miata. The other is a stronger unit that came on all turbo RX-7's, 929, B2600, and MPV.
Within the type2 versions only the bellhousing & tailshaft cases and gear ratio's are really different between models. All the guts of the Type 2's are nearly the same and mostly interchangeable. The major differences came in '81 when the shifter was made remote, in '83 where some bearings and shafts were made larger and in '94 with improved seals and a double cone 2nd gear synchro. Between models the input/output shaft lengths may differ slightly (~ 1/2") so always measure. The 79 through mid-83 tranny guts should be avoided if reliability and torque rating is important.
Everyone asks me about changing the Miata 5th gear with that of the 2nd gen RX-7 so that their highway cruising rpms can be lower. The whole guts can be fairly easily transferred but individual gears, unless you are an experienced transmission repair technician and have all the proper micrometers and pullers (and have an idea what you are doing), is not a job for the average shade tree mechanic. The Miata trans also uses a different number of teeth on the input and counter shafts than the corresponding RX-7 transmissions so swapping to the RX-7 5th gears creates a different ratio than the advertised ones. See 5th Gear Interchange Chart.
The turbo trans (AKA 'type3' or model 'R' ) was derived from the original, and more robust, RX-2 through RX-4 5 speed type1 trans. It also has many internal design similarities to the Type 2. It mainly differs from the Type 2 in the input and output shafts grew from 15/16" to 1", a removable bellhousing and the case having strengthening ribs instead of being smooth. For more turbo trans info go to the links page and click on Mazdatrix and Felix's. A variant of the turbo trans has been used in Ford light duty '88-91 F-150, Bronco and Ranger trucks. It is model M50D-R2 and also known as the "Kogyo"
The 99+ Miata 6-speed is made by Aisin and is not related to the Type II 5-speed (it is listed below for reference ony). Will the 6-speed bolt in a 5-speed Miata? Yes, make sure to get the trans plate and shifter from the 6-speed donor since they are unique to it. You will have to use only two of the three 5-speed starter bolts but that shouldn't be an issue, otherwise it bolts in (same PPF mount, etc). Keep in mind the 6-speed is combined with a 3.909:1 rear in the USA (3.636:1 other markets) since the tranny gearing is much steeper so your '90-93 or 99+ 4.30:1 5-speed rear should also be changed to the 3.909 or at least the more common 4.10:1 otherwise you'll have a nice tree stump puller
Within the type2 versions only the bellhousing & tailshaft cases and gear ratio's are really different between models. All the guts of the Type 2's are nearly the same and mostly interchangeable. The major differences came in '81 when the shifter was made remote, in '83 where some bearings and shafts were made larger and in '94 with improved seals and a double cone 2nd gear synchro. Between models the input/output shaft lengths may differ slightly (~ 1/2") so always measure. The 79 through mid-83 tranny guts should be avoided if reliability and torque rating is important.
Everyone asks me about changing the Miata 5th gear with that of the 2nd gen RX-7 so that their highway cruising rpms can be lower. The whole guts can be fairly easily transferred but individual gears, unless you are an experienced transmission repair technician and have all the proper micrometers and pullers (and have an idea what you are doing), is not a job for the average shade tree mechanic. The Miata trans also uses a different number of teeth on the input and counter shafts than the corresponding RX-7 transmissions so swapping to the RX-7 5th gears creates a different ratio than the advertised ones. See 5th Gear Interchange Chart.
The turbo trans (AKA 'type3' or model 'R' ) was derived from the original, and more robust, RX-2 through RX-4 5 speed type1 trans. It also has many internal design similarities to the Type 2. It mainly differs from the Type 2 in the input and output shafts grew from 15/16" to 1", a removable bellhousing and the case having strengthening ribs instead of being smooth. For more turbo trans info go to the links page and click on Mazdatrix and Felix's. A variant of the turbo trans has been used in Ford light duty '88-91 F-150, Bronco and Ranger trucks. It is model M50D-R2 and also known as the "Kogyo"
The 99+ Miata 6-speed is made by Aisin and is not related to the Type II 5-speed (it is listed below for reference ony). Will the 6-speed bolt in a 5-speed Miata? Yes, make sure to get the trans plate and shifter from the 6-speed donor since they are unique to it. You will have to use only two of the three 5-speed starter bolts but that shouldn't be an issue, otherwise it bolts in (same PPF mount, etc). Keep in mind the 6-speed is combined with a 3.909:1 rear in the USA (3.636:1 other markets) since the tranny gearing is much steeper so your '90-93 or 99+ 4.30:1 5-speed rear should also be changed to the 3.909 or at least the more common 4.10:1 otherwise you'll have a nice tree stump puller
Enjoy.
Thread
Thread Starter
Forum
Replies
Last Post
1987, 1992, b2000, b2200, check, conversion, ford, interchangeable, m50dr2, m519, manual, mazda, mustang, pickup, ranger, transmission, transmissions
