im thikning of rebuilding my motor for approx 350whp. its going to be a mild build with just new pistons and rods and ocourse new gaskets and such. i would need to bor the cylinders to 81.5mm (b18c1). will 81.5mm be alright with about 15 psi with a good tune?

 

yeah, you will be fine, my ls vtec is pushing a little over 400whp, stock sleeves with block guard and just pistons and rods, ive thrown 20psi at it on the street

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by playahwitgame &raquo;</TD></TR><TR><TD CLASS="quote">im thikning of rebuilding my motor for approx 350whp. its going to be a mild build with just new pistons and rods and ocourse new gaskets and such. i would need to bor the cylinders to 81.5mm (b18c1). will 81.5mm be alright with about 15 psi with a good tune?</TD></TR></TABLE>

you'll be alright but resleeving the block would be a great idea when you turn up the boost and trust me, you will want MORE boost

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM turbo DC &raquo;</TD></TR><TR><TD CLASS="quote">you'll be alright but resleeving the block would be a great idea when you turn up the boost and trust me, you will want MORE boost </TD></TR></TABLE>

Agreed, might as well sleeve it while you have it out.

 

you guys dont know how much i wish i could. im only 19 years old. once/IF my stock engine breaks, thats when ill be doing the rebuild. i can get 1800-2000 for the mild build, unfortunately i cant get anohter 1000-1500 for a sleeving job. i would love to, but its a money thing. and truthfully, right now, im at 238hp and i dont even push it all the time, hardly ever. but when i do push it, i push it lol. so i think with 350whp will be alright. i have an integra gsr. maybe ill look for a cheap pos hatchback civic and put the motor into that. will 350whp in a hatch civic hopefully having traction should yield me somehwere in the 11s?