For our turbo Buick engine, we had an opportunity to select from a variety of bearings. This post will cover some of the basics we discussed with our machine shop.
When it came down to it, we had two choices of bearings for our crankshaft. We could either use the Sealed Power “H” bearings or a Calico Coatings coated ACL bearing. The Sealed Power bearings are hard and would have needed some scraping to clearance the radius on our crankshaft. This was part of the reason why we chose the Calico coated bearings.
Calico coated crankshaft bearings generally are desired for boosted applications because the coating reduces friction. Unlike the Sealed Power H bearings, Calico coats ACL bearings. When compared, the Calico bearing offers greater give then its Sealed Power counterpart.
Because hard bearings can be tough on a crankshaft journal, the CT1′s were the best option for us. Our machine shop took the time to talk with us about this and with their proven track record of success, we felt their advice should be followed.
