if any one know if the b20 pistons and crank will work in a b18 let me kno. i am cluelesss

 

yes . crank , rods will , but the pistons must be 81mm .. i dont think the b20 84mm pistons will fit ..

 

but the oem b20 pistons are 84mm right. i not sure. but i sleeving the ls to 84mm

 

The B20 and LS share the same crank and rods, both are PR4. The B20 pistons will work fine, just make sure that you have the pistons measured before you bore to ensure that you bore to the right diameter. I even have an extra complete B20 bottom end out of the jdm B20B (same as B20Z1) if you don't have already

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boblaw &raquo;</TD></TR><TR><TD CLASS="quote">but the oem b20 pistons are 84mm right. i not sure. but i sleeving the ls to 84mm</TD></TR></TABLE>

Yeah, if you re-sleeve that block and it has an 84mm bore they'll fit…but it’s a enormous waste of time and money, why not get either forged piston or RS machines cast pistons?

 

well i am going turbo. and everyone told me to sleeve it. so i was gonna sleeve my ls to 84mm i want to use my b20 crank