Anyhow, I have a 95 si (canadian btw) just changed the motor to a d15b, and i still have the same old tranny from my old d16z6, anyhow i shifted from second to third, and thrid felt fucked, it felt as if it wasnt even there, like i shifted into nothing, but it was in the position of the 3rd gear. Now when im in nutrel it either in a gear or just ginding, 3rd 4th and reverse unknown, and fucked so im not sure what the *** is happening, if u guys have any idea what is wrong please help, thanks

 

syncros

 

Maybe something broke like a shift fork or the shift selector tab?

 

your synchro's are probably gone. or you shattered your shifter fork (very common problem with the Z6 tranny.)