Main bearing crush

Daran Summerton · 03-25-2011, 08:05 AM

Guys I am once again working on my 455 Olds stocker. Question is about the main bearings from different manufactures. On a 3" main, has anyone ever taken a measurement of the bearing above the bore once the bearing is snapped in. Is there a min. number (Thousandths) and still maintain sufficient crush. I am beginning to think excessive crush maybe pinching along with the CN crank flex from the heavy rotating assembly. I have wiped #4 main 5 times on 5 different motors. Can I adjust the measurement using 1000 grit on a piece of glass? Thanks

03-25-2011, 08:05 AM	#1
Daran Summerton Senior Member Join Date: Jun 2003 Location: Las Vegas nv Posts: 600 Likes: 18 Liked 66 Times in 37 Posts	Main bearing crush Guys I am once again working on my 455 Olds stocker. Question is about the main bearings from different manufactures. On a 3" main, has anyone ever taken a measurement of the bearing above the bore once the bearing is snapped in. Is there a min. number (Thousandths) and still maintain sufficient crush. I am beginning to think excessive crush maybe pinching along with the CN crank flex from the heavy rotating assembly. I have wiped #4 main 5 times on 5 different motors. Can I adjust the measurement using 1000 grit on a piece of glass? Thanks __________________ 72 cutlass