i have an b16a jdm S1 tranny that i need to find out what year it is. i believe it is a 93(at least that is what i was told) i remember something about spline size varying with year, but i couldn't find anything in the archives, if anybody could help me that would be cool, thanks.

 

anybody?

 

S1 transmissions were used in 90-91 Integras and have a 25mm spline. The spline size does vary between 90-91 and 92-93.

 

thanks for the help! i was told by ACT that the 90-91 is 1" and the 92-93 is 1 3/32"
and i think 1" is 25.4mm.