ive searched but couldnt find a solid answer i have a friend who works at honda so i can get parts prettty cheap anways would a civic si water pump and timing belt work on a integra ls motor?? ive heard if i used the water pump and belt together it should work

 

your last statement is correct. as long as you use the same b series water pump with timing belt, you'll be fine.

 

i thought the b18 series timing belt was longer than the b16 timing belt?
i dont know about the water pumps tho

 

you can use a civic si water pump on an ls motor, but you will have to use a gsr timing belt since the b16a has a lower deck height than a b18. in short, its a shorter motor, therefore require longer belt.