Originally Posted by
GaRn
I have only gone to 10-12ish psi on my H23, but I have noticed all the guys making 400+ whp on their stock block honda motors usually say something to the effect of: If you want to make power on your stock block, you can't be afraid/scared..
I would think if you monitor knock well and have a good running maintained engine otherwise then go for it hehe.. others have already proved stock block potential..
Of course, I can't say much since I am the one parting out my setup instead of pushing forward :/
do you mean stock block(as in unsleeved),but aftermarket parts otherwise like pistons and rods?or,do you mean stock rods,pistons-everything?
i've seen VERY few 400WHP cars on stock pistons and rods.they might make that number,but only do it a few times.84mm bore on a B-series engine is not going to stand up to too much boost-i'm really impressed that MP5's engine has lasted three years at 1BAR.
around 14-15psi is about the limit on a totally internally stock B or H series engine,and that's pushing it bigtime.you better have a perfect tune(not the kind of thing you'll accomplish on an FMU and street tune).you still have plenty of weak links-thin cylinder walls/weak rods on the B20,crappy pistons on the H22,high compression on the VTEC B-series engines limiting timing-that are going to make it very easy to kill that engine.all of the Honda engines have relatively weak pistons and rods.
stock
blocks can handle all kinds of power.my new engine contains stronger rods and pistons,but a totally stock block with stock sleeves.it should make around 500WHP.the H22 stock sleeves are capable of over 700WHP.
chris