The Ford Barn - View Single Post - Lesser of two evils..cracked main babbit or used replacement?

mike657894 · 04-12-2018, 08:42 PM

I just did this. I used a bearing scrapper and I used a red sharpie as my marking. I used platigauge to get it to .0015. I broke the slinger seal groove on my original rear main and the one I found was for a .010 under crank mine is stock. It took 5 hours of scrapping you will get about 1/12 to 1/20th of a thousand per scrap and only in a very small area. But it works. I make a quick grid on the bearing with the marker. set the cap on and if its .010 under it will have gaps but as you get close the gaps will close then after some more it will free up under torque. then you have continue to get your clearance. A good vise that will hold your work at a comfortable level is a must for 5 hours of bearing scrapping.

If you can make it happen with shims try shims first.

04-12-2018, 08:42 PM	#19
mike657894 Senior Member Join Date: Oct 2015 Location: Bay City Michigan Posts: 1,050	Re: Lesser of two evils..cracked main babbit or used replacement? I just did this. I used a bearing scrapper and I used a red sharpie as my marking. I used platigauge to get it to .0015. I broke the slinger seal groove on my original rear main and the one I found was for a .010 under crank mine is stock. It took 5 hours of scrapping you will get about 1/12 to 1/20th of a thousand per scrap and only in a very small area. But it works. I make a quick grid on the bearing with the marker. set the cap on and if its .010 under it will have gaps but as you get close the gaps will close then after some more it will free up under torque. then you have continue to get your clearance. A good vise that will hold your work at a comfortable level is a must for 5 hours of bearing scrapping. If you can make it happen with shims try shims first. Last edited by mike657894; 04-12-2018 at 08:49 PM.