Originally Posted by
EconoBox
The H22 doesnt have traditional sleeves. The are a Carbon/Aluminum Alloy sleeve and can't be bored by much. The stock sleeves need specially coated forged pistons that run around $800 a set from Mahle and the motors don't hold high boost well. If you plan on putting down some big numbers send the block out to be sleeved by a company like golden eagle. Then you can run traditional forged pistons without any problems and reliably Hold the power. Any more questions on the H22 feel free to PM me.
only half right, The mahle pistons cost just as much as any other piston set. Around $500. The sleeves are actually STRONGER than B series Iron sleeves and hold up really well to boost. Only a few local shops know how to correctly hone these walls (United Speed World on Florida i can vouch for)
IF you want to do this bring them the Pistons and the block and make sure to let them know that these are FRM sleeves with Mahle pistons which REQUIRE THEIR OWN PRE SPECIFIED PISTON TO WALL CLEARANCE AS STATED IN THE SPEC SHEET OF THE MAHLE PISTONS. That is the reason why alot of people that use mahles scarr their walls because they like to add their own bore size.