Integra engine and Boost

[AzCivic]

How much boost on a daily basis can the LS and GSR engines handle if they had a block guard and a thicker head gasket? Can the LS engine handle much more than the GSR?

[2ndGenTeg]

8 psi. The achilles heel of the engine is not the open deck or the cylinder sleeves- it's the rods and pistons. However, with a good sleeving job and forged rods and pistons, you can boost 12 psi pretty easy, more with good tuning.

[AzCivic]

If the engine is already out of the car, is replacing the rods and pistons something i could do my self? And isn't resleeving very expensive? The reason I ask this is that I'm trying to choose between the GSR or the LS engine to get. I'm thinking is i go with the ls the money i save can go toward building up the engine so later on i can go turbo. But if the Ls engine needs major rebuilding like resleeving(which is like 900$ right?) to handle decent boost then I'll just the Gsr engine and later put on a Jackson racing supercharger.

[blownteggy]

if the block is already out, replacing the rods and pistons are easier. if you have never done anything like this, i suggest you take it to a very reputable shop. resleeving the block and get a little pricey. look @ it this way..build the engine up, to handle more boost with a cheaper engine(LS), and be able to raise the boost past 8 psi, or buy an expensive engine(GSR), buy a charger, and buy the upgrade kit to boot between 9-11 pounds? your choice