I've been doing research non stop for the past 3 days trying to figure out what transmission I have. There is NO id tag on it. It has the screw holes where a real vin plate used to be, not just a sticker. All it says on the back is ysk-3. It has S4 stamped on the front. It's a hydraulic obd1 tans thats attached to my 92 B16a motor.
I've seen S4C tansmissions but mine only says S4. The S4 is stamped where a LSD stamp would be. I'm pretty sure my b16a is an sir2 based on all the research i've been doing. I've read that b16a normally has a Y21 or S21 trans but never seen anything on an S4.
I know The only true way to know is to take it apart and count the teeth but it's my dd right now so thats not an option. Any help at all will be greatly appreciated. I've looked at every possible thread, post, image, website and still nothing.
PS: the tanny mount bolts are real closer together (an inch) insted of far apart (3 or more inches). If that makes any difference.

 

Ok I scraped off some grease and gunk with a tooth brush and lucky the other id sticker is still on there (the one near the mount). It says S4C. Does that mean its the civic type r tranny?? what else comes with an S4C? I took a picture of it and will post it up later for the hell of it

I also just read that if the holes for the vin plate are threaded then its a usdm trans and if theyre not threaded then its jdm. Can anyone back that theory up

 

Just means it's a B-series from an EK Civic chassis - Si or CTR. Same gearing, there will just be an LSD in the CTR trans, which is easy to spot visually if an axle is out.

 

Ok cool, thanks man. I have to replace the axles soon anyway so I'll find out wether it's from the ctr or si. I'm hoping ctr but highly unlikey