Have a 1991 integra b20b block with a b16 si head
with a ls tranny
now my problem is when I try to switch out the clutch none will fit on tranny any ideas why ??

 

I am guessing this is your issue. The 89-91 had a "small spline" input shaft, and 92-93 were "big spline". They require different clutch discs. The picture below tells you how to identify which tranny you have. If you try using the wrong year of clutch with it, it either won't fit or will be very loose on the input shaft.