Originally Posted by Aquafina
P8R = 47cc
P75 = 45cc


i cc'd my p8r head today and i came up with the same numbers...




you really should read this if you are going to post it up. above contradicts what i said and measured on myheads and i believe it to bo wrong.





you indicated that your b20b engine had stamped on its cams, R1 exhaust, and R2 intake. Your b20z had R3 ex and R4 in. All 4 were stamped p75, and both sets had different specs.


from another post, telling you the cams, intake and header are different.