i have a closed deck h23. i want to put cp pistons in it. i do know that the block has to be sleeved. but i was told that if i put mahle pistons that it will not shred up the block.
this engine is going to be turboed and i want to get atleast 500 horses out of it. can anybody point me in the right dirrection?

 

H22 and H23 need sleeves if you are going to use pretty much anything else other than Mahle.

You can use the F22 block, its made of a different metal.

 

now are mahle pistons good? will they hold lots of boost?
and how many horses can they hold?

 

Depends. talk to the person who is doing your build.

Mahle pistons come in different sets. Each set is designed to give you a different compression amount.

Turbo builds need lower comp.