BMW S62 Block Sleeving Block sleeving is the process of replacing part of the stock cylinder walls and   pressing in a new Iron Ductile Sleeve into the block. We machine out the   entire sleeve are of the engine and replace it with a customs sleeve that integrate   with the top of the cylinder block. The iron ductile sleeves we use at Bavarian Solutions   are much thicker than the stock cylinders and therefore very reliable. The reasons   many of our customers sleeve their blocks is to increase displacement with a   bigger bore and to strengthen the block for forced induction applications. Options:   Boring & Honing Price: Contact Us