I already did a search and can't seem to find an answer. I am about to buy a b16a1 head but I want to know what the difference is between that and the newer b16a2?

I will be replacing the valve springs and retainers so the head being 13 years old won't be a problem. However I heard that the newer b16 head has better flow? is this true? A port and polish job will fix that up?


Also I heard that the B16a1 camshafts have a less agressive lift compared to the b16a2, is this true?

Links would be nice too! thanks.



[Modified by BG Boost, 7:47 PM 8/21/2002]

 

a port and polish will more than do the job for you.

The main difference is the cams.

 

cams, oil passages(but not much different), and Intake manifold

 

I'm pretty sure the B16A2 has a larger throttle body(2mm larger) than the first generation B16A.