JWhip1

im looking to start building a b20vtec motor and wondering which head would be better a b16 head or b18(gsr) head. Have some time before i start so gimme your thoughts

thanks

taggart_lumpy

i opted for the b16 head

R666_EK

Well. I say go for whatever you can get a better deal on. If you are leaving it stock then its a toss up. B16a = slightly better flow B18c = slightly better cams.

So its up to you. If you plan on doing some porting and building it doesn't really matter that much.

P12 EG6

heres the thing , if your using a stock B20 block i would suggest the B18C1 head because it has a smaller combustion chamber than the b16(p30) if your gonna port and build the head then it dont matter that much.. and eather way dont run stock cams you need more lift and duration for the displacement

Deetz

NEITHER is better. One has a couple hp on the lower rpm, one has a couple more on the higher.....is the power noticable between them? NO

eggsi619

ownned! hahah

rick_rabies

b16 is for NA, the gsr head makes more of a swirl when taking in air...better for turbo.

siguy44

I call bs on this guy.

-=*javy*=-

b16 better airflow
gsr .5 compression
you have the graph to see the difference between the too

seadonkeyraypiss

Because the gsr head was designed for a turbo application right?

rick_rabies

for the iabs. its from honda, the flow rating. look it up

rick_rabies

mister siguy i think you will disagree you when you take a ride in the whip when its done.....taylor

Snafubmx234

IABS was developed as Honda's stab at variable length intake runners. Please enlighten us all with how this creates a "swirl" and how that "swirl" is better for a turbocharged application. Speculation? I think so.

rick_rabies

i read it a ways back...look it up. your speculating im wrong. i might be, then so is honda.

rick_rabies

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/b16-head-vs-b18-head-469492/

taggart_lumpy

calm down there pal

rick_rabies

i was just enlightening the fella, is it my avatar that scares them?

RyanA

I've always said any head is good head. I agree that whichever one you can get your hands on at a more reasonable price is the one to go with. I've used both with great results...

Top Speed

This topic has been gone over way to many times.

alexsan

X2...

B16A2 Engine....160hp
B18C1 Engine....170hp

B16A2 best performance head, best cams

stealth50k

B18c1 head is taller so it would look bigger when you show off your beast . Both are practically the same in flow from the charts. Just use whatever you can get.

Deetz

OMG!!!!!! LOL, wow, thats untrue!

TypeRMOBBiN209

b16 head!!

99civicsiguy

b16a2, hasn't failed me yet

yes SiR

just go with the one that you can get a deal on and is in better condition