Wear limits of S4 TII rotor Apex seal slots
 

I have one that looks to be streched some in the apex seal slot area. It is more severe on only one side.

Side A gaps measured: 2.01-2.04 mm
Side b gaps measured: 2.15-2.18 mm

I believe this would be out of spec BUT I cant find any credible information.

Here are all six..
http://i721.photobucket.com/albums/w.../GARAGE070.jpg
http://i721.photobucket.com/albums/w.../GARAGE076.jpg
http://i721.photobucket.com/albums/w.../GARAGE073.jpg
http://i721.photobucket.com/albums/w.../GARAGE072.jpg
http://i721.photobucket.com/albums/w.../GARAGE074.jpg
http://i721.photobucket.com/albums/w.../GARAGE075.jpg

i have always done it by feel and never had a problem

You clearance your apex seals by *feel*? I don't mean to be rude, but that is no way to build an engine in my opinion, not when you're dealing with clearances that are measured in the thousandths of a millimeter.

murray, I wouldn't use those rotors in a build at my shop.

AGREED. They would be a good canidate for 3mm SEALS. as long as there are no problems with the faces.