So just swapped out my lx transmission on my 93 civic for an ex tranny 2 weeks ago. I noticed last week that something was leaking from below my car. At first inspection I suspected oil leak from rear main seal as it seems to be coming from between block and tranny. Oil level doesnt seem to be going down much though so I thought maybe tranny fluid. Checked the level and it took about a quart even though I just filled it 2 weeks ago. Doesnt appear to be coming from axles, so i dont think its the axle seals. What could be leaking tranny fluid from between the tranny and block? Thanks all!

 

The mainshaft (ISB) oil seal or the interlock guide bolt, most likely the former.

 

Yea, I have been reading up and it sounds like it might be that seal. Does the input shaft bearing go by any other name? And does anyone know of a write-up I can follow? Thanks.

 

It's not an identical set up, but the job for your car would be very similar:

http://www.d-series.org/forums/trans...ng-change.html