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Yeah cant run forged in a H series.. There is a company that makes a piston with a gold plating on the walls of the pistons that allow you to run forged in a H block... I dont remember the comany but I will find it and post it up.bob12345 said:if you are putting forged pistons in, you NEED to sleeve the block. If you don't, you'll be tearing it back out in a matter of months to replace the sleeves that have holes in them from the forged pistons.
If you plan on running that much horsepower, you need the forged pistons, or you'll blow rings. H22 ringlands are not the best under boost.
EDIT: Heres the site... http://www.mahle.com/ http://www.importperformanceparts.net/imports/mahlegold-honda.html