Long story short. I accidentally bought b18c Arp head studs, since seller said it was for b16a motor. Forgot to check part number before I got home and now I'm stuck with these.

Here's the things I know:
1) ARP head studs design b16 studs to be slightly shorter than b18c1
2) oem Honda head studs are the same length in all b series VTEC motor

Wondering if I could still use ARP b18c1 head studs in my b16a motor?

Plus anyone know why ARP are different length at the same time oem are the same length?

 

what is your part number on the box?
208-4303 - gsr
208-4601 - b16a

the head is taller on the gsr then the b16.. by how much, I dont know. I cant image it being a huge diff that you would run into clearence problems.. Now if it were the other way, that would be an issue.

 

b16 and b18c do not have the same length bolt. b16 is 155mm and b18c is 164mm.

get the right ones. a gsr head is not taller than a b16 head btw. the difference is in the block heights.