Can you interchange the 89-91 13BT rotors with 93-95 13BREW rotors? Reason I ask is I have a set of 13BT rotors that are in excellent shape and I have a 13BREW motor but the one rotor appears to have caught something. And the apex seal groove is slightly pulled back just on one corner. I put an old apex seal in it and put a thick straight edge on it an hit it with a hammer and appears to have straightened it. I measured it and is in tolerance now. Well back to my question if the 13BT rotors can be interchanged with a 13BREWs. I know that the weights and compression are the same but the part numbers are different. Also know that the bearing clearances are different also. Is it possible for me to use them if I change the bearings to the 13BREW bearings and get the assembly balanced? I could probably get my 13BREW rotors cut to 3mm but I already have a set of 2mm apex seals and would rather stick with the 2mm's.

the weight is the same between the 2. i think if you check the bearing clearances you're good

yes, they are interchangable