Emergency. 13b Transmission gone.
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Junior Member
Joined: Jun 2010
Posts: 28
Likes: 1
From: Silver Spring, MD
Emergency. 13b Transmission gone.
I have a Lotus 7 replica which has been completely rebuilt for street with a 13b racing engine. The transmission wasn't replaced, because it didn't appear to need it; but the shift forks went out a couple days after delivery. (It is a 1984 transmission in a car that puts down about 240 horse power and was autocrossed hard, so its death isn't a big surprise). I"m stuck with a beautiful car and a transmission that only works in first and second gears. Does anyone know anyone who can get me a decent, low mileage or rebuilt transmission into my car in a hurry? Please PM me if you know anything about Kearny Racing and their rotary specialist, Linda Kearny, in Capitol Heights MD. Thanks
Weird Cat Man
Joined: Aug 2001
Posts: 2,868
Likes: 3
From: A pale blue dot
As far as I know there were a bunch of 13B transmissions and I think (you SHOULD CHECK) that the bolt patterns were the same on all of them for 13B.
The flywheel/clutch/pressure plate diameters were also slightly different on some of them like the turbo and 93+ models I think too. So make sure you end up with a working set of engine with bolt holes + the right flywheel/pressure plate/clutch + trans.
They also have slightly different ratios and if you use the car for racing, this might be a factor for you. For street driving, my guess would be that the ratios matter a little less.
I'm also not sure if the overall lengths are exactly the same. You wanna keep your shifter in a good spot
1984-1985 GSL-SE 5 speed
1986-1991 Non Turbo 5 speed
1987-1991 Turbo II 5 speed (stronger!)
1993-1995 5 speed (pretty much the same core box as the Turbo II except it has provisions for mounting the powerplant frame which connects the trans to the diff on the 1993+ cars). It also has an electronic sensor for the speedo. Not sure if an old-style cable driven unit can be substituted here.
The flywheel/clutch/pressure plate diameters were also slightly different on some of them like the turbo and 93+ models I think too. So make sure you end up with a working set of engine with bolt holes + the right flywheel/pressure plate/clutch + trans.
They also have slightly different ratios and if you use the car for racing, this might be a factor for you. For street driving, my guess would be that the ratios matter a little less.
I'm also not sure if the overall lengths are exactly the same. You wanna keep your shifter in a good spot
1984-1985 GSL-SE 5 speed
1986-1991 Non Turbo 5 speed
1987-1991 Turbo II 5 speed (stronger!)
1993-1995 5 speed (pretty much the same core box as the Turbo II except it has provisions for mounting the powerplant frame which connects the trans to the diff on the 1993+ cars). It also has an electronic sensor for the speedo. Not sure if an old-style cable driven unit can be substituted here.
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