transmission interchange

oldae82
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transmission interchange

Postby oldae82 » Fri Nov 08, 2019 5:31 pm

My ae82 w/dohc and 5 speed manual is having transmission output shaft bearing problems. What is the the difference between the sohc and dohc transmissions? Aside from availability.

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sirdeuce
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Re: transmission interchange

Postby sirdeuce » Tue Nov 12, 2019 10:59 am

Check the gear ratios, that would be the biggest difference. Other than that, depending on year, either a C50 or C52 would be used. My '87 AE82s had the C52 trans in them and they were both DOHC. If you are concerned with strength and longevity you could look at any corolla with a 4/7A engine but research the ratios, the 7A would have a lower ratio to work with the 7A's torque and could kill your performance. If you already have the SOHC trans the ribbing would be different between the 50and 52, I don't remember the obvious differences. But if it's what ya got run it, it'll do the job. If you really want to get better performance look for a C56 from a 20v AE101 with an LSD or a 6 speed from a blacktop 20v from an AE111.
Sorry for the hot air.
One shot, one kill.

oldae82
Club4AG Enthusiast
Posts: 101
Joined: Sun Apr 07, 2013 5:38 pm

Re: transmission interchange

Postby oldae82 » Thu Nov 14, 2019 4:48 pm

Thanks for the info. Looking at photos of other transmissions, the six-speeds look as if the starter is on the opposite side from mine. The photos of the SOHC transmissions look the same in the bell housing, but the the crossover charts say they won't fit. The one I have, that's sick, is a c52. Nobody around here has anything I can look at and put my hands on. Truly, if I'm going to have an old Toyota, I ought to live on the West coast.

sirdeuce
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Re: transmission interchange

Postby sirdeuce » Thu Nov 14, 2019 5:39 pm

The six speed has the starter on the intake side, but all you nee is a backing plate from a late '90s 4 or 7A and the starter from same. It's actually better having the starter on the "cold" side of the engine.
If you are looking for a trans from a wrecking yard Celicas came with an 'A' series engine in some models and would have the 'C' series trans as well.
IF you do happen to go 6 speed bee sure to get the shifter assy. and axles as well to simplify installation.
One shot, one kill.

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