I was not sure where to put this.
Does any one know the difference between the b18a/b and b20 crank pulley? Its a different part number from honda, but if you look at the aftermarket ones like unorthadox it says the ls pulley and b20 pulley are the same. does anyone have a ls pulley laying around that they can measure the diameter of the pulley in all 3 spots so i can see how far off they are from my b20 pulley. Thanks

 

I think a b20 pulley is bigger cause I know guys running superchargers that throw them on and it equates to 2-3 more pounds of boost.

 

it might be but the jdm b20 pully is huge