rear main bearing cap
just read the following from the Cosworth Repair manual - not put any sealer on when i fitted mine - will it leak oil??
• The rear main bearing cap is cham*fered on both sides to ensure cor*rect seating on the cylinder block. When installing the bearing cap, the chamfered edge should be coated with sealer (Loctite 518). Make sure the sealer is not applied to the flat contact area.
Rear main bearing cap
Sealer to be applied only to the chamfered edge.