[mls]

according to my HyperREV reference book, the B18C5 & B16A have the same intake camshaft, and the B16B & B18C5 have the same exhaust cam. Is this true, or am i reading wrong?

 

[LudeAction]

the intake cams are the same for the Rs but the civic R is better for exhaust....gsr and si have the same cams i believe

 

[VTECsqznN2O]

all b series cams are very similar with the exception of type r cams. b series cams all have 230 degrees of intake duration with 10.6-10.7mm of lift. on the exaust side the have 227 degrees of duration and 9.4 mm of lift..thay all have about 17 degrees of overlap...
intgra type r cams have 240 degrees of intake duration and 11.5mm of lift and the exaust has 235 degrees of duration and 10.5mm of lift. it also has 25 degrees of overlap
Civic type r cams are slightly larger with 243 degrees of duration on the intake and 28 degrees of overlap. everything else is the same
those are the only differences

 

[VTECsqznN2O]

oh and beware if you install type r cams on a b16...they only have dual valve springs on the intake side where the type r has them on both sides...The intake side of the b16 valve springs are actually stiffer than the type r valve springs on the intake...thats because the type r valves are lighter than the b16's..so if you put type r cams in a b16 be sure to get type r intake valve springs because the b16's exaust valve springs cant handle the extra valvetrain velocity that the higher lift type r cams have