Toyota rarely even stamped an ID on any of their transmissions and those that did were usually on the lip of the bellhousing and didn't spell out what it was.
Have to go with starter location, bell-housing, input spline count and length etc.
This article is on a C150 but will give you some ideas.

The Challenges of Modifying a Toyota C150 Transmission.

The C150 is one of the first 5-speed transaxles made by Toyota, here in the US this gearbox would be used in the Echo, Tercel, Paseo, and 80's Corolla. These cars were smaller and made a lot less...

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Thank you for helping! Dave

 

What are you working on?

 

1995 Tercel coupe with a 4 speed


Has a bad output shaft bearing on the rear and possibly the front as well. Thought I would upgrade instead of rebuilding. Better mileage and driving comfort would be great too!

 

Maybe consider the C150 too since they were used up until 94'. Minor gear ratio differences between gears but same final drive.

 

whoops just got this. So it would bolt up. spline count must be the same.

 

I know the spline count is the same on the 4 speed and the c151 but I dont know if the c150 is different. Add that to the list of things I dont know. hahah. I dont want to end up paying 600 for a trans that has a shorter 5th and a pop out issue. Hell I dont even know if the c150 would bolt up to my 5efe.

 

Mixed info, the Wiki listing of the C series transmissions list the C150 in a 1994. but then the 94' had a different motor.
The 1995 did come with the C151 behind your engine.

ToyoDIY.com

 

Thank you. Ive been looking around for case length on the C151 but no luck yet. Thanks for the link.

On the fact toyota site I seen a diagram of the 5th gear cover on the C151 and it looks to be cast aluminum. Maybe that will help me. Thanks again for all your input

 

Well, I decided to fix the four speed.

 

The way to discern a C141 and a 151 is the cover stamping pattern.

 

Thank you.

 

I'm not a tranny guy, but I took apart my 4 speed just to get an idea of how it works, and it looked to me the only way to replace the input and output bearings was to open the whole thing up. I had a 5 speed that was in bad shape and replaced it with a "low miles" junkyard unit. Sure enough it's low miles and runs great. I'm thinking I'll take the old 5 speed in for a rebuild at some point, these are becoming hard to find.

 

how do you know which 5 speed your looking at?
I.E c150 vs. c151

 

I guess that depends on the model of car it came out of. Note that the C150 was used in many models, each with a different bell housing (which is part of the case and not separate). And that included the Paseo with the 5EFE engine. So you could find a C150 from a Paseo which would likely be a direct bolt-on for your Tercel. I say likely because shifter cable mounting may be different and other little things like that. You could fix that by taking any C150 and swap in a Tercel bell housing. Trust me you don't want to try that yourself! But a good transmission tech could do it. The thing is, just to get the two halves apart, you separate them about 3/4". Then you have to reach in with a 10mm wrench and loosen a linkage nut. Then they come apart. Good luck reassembling!

Better to just find a C151 in decent shape, or have one rebuilt.

In my case I did a Nationwide junkyard search and was lucky enough to find one 75 miles away, so I went and picked it up. Installing the clutch was a trick because of the lack of pilot bearing. The crankshaft does have a slight depression, so the alignment tool sort of works if you're careful.