how can i tell what tranny i have im thinking that i have an si tranny the motor is an A6 but not sure otherwise.

 

It probably is an Si if you have an A6 motor.

In the FAQ thead there is a a section for transmissions.
The FAQ and search are good places to start before posting a question.
https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/

The answer can be found directly here -
https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/what-look-identify-si-tranny-1551508/

Good luck!

 

unless it's been swapped or changed out, you've got an Si transmission. you can check the input shaft for this as well by the number of splines.

 

depending on how much crud you have on your tranny, might b hard to see. it should have a stamp or a sticker to tell you what model number tranny it is. like other guys said though it should b an SI tranny. good luck

 

thanks guys big help found out si