I did a little searching on why do people use "poor man type r" setup, I'm starting to built my head up, but i want to know if it really worth it to swap out head, just for the little differance in the flow of air? Is it really that much of a differances between the b16 and b18 head? I heard that b18 head give a higher compression then b16 head does, would that be a advantage on b18 heads? Please straighten things out for me and help me figure out what is the best.

 

Yo if you already got a B18c1 head keep it or if you got a B16head keep it, they practically have the same potential if you're going aftermarket. Alot of cats like the B16 because "its just like the Type R", no its not they look alike and has the potential to used all the R parts. You still got to port and polish, upgrade valves and springs, upgrade the cams, upgrade the Intake manifold and throttle body; at the end of the day if you're going with aftermarket parts either head should do, but if you dont have a head already the b16 is great because they are usually really cheap compared to a GSR or Type R. In my opinion I would just keep a GSR stock vs. stock since its pushing out more power from the start and the cams do really good with turbo set ups; cats even put GSR cams in B16's and from what I've heard it makes a difference. At the end its up to you, if you plan on staying stock head go with the GSR if you plan on using R parts go with the B16 but if you're going full aftermarket ex: Skunk 2 cams,springs ect... either will do. Hope this helped, good luck.

 

the gsr head is a downdraft design, compared to the sidedraft style b16 head... apparently down draft heads allow for better flow because of the straight path, or something like that

 

bump. any more responds?. well i do have a gsr head, and i am going to do all mod to it, at the end will the b16 head be better with all the same parts that goes on the b18 head?

 

They are esstentially the same. I haven't seen any dynos supporting amazing results from either head. I would say the only thing it really determines is your Intake Manifold and Header choice, not to mention cams, etc...

 

all i've ever heard about the differences between the b18 and b16 is that the b16 has better flow like the other guy said it is just like the type r head. the b16 head is a popular head used for ls/vtec set ups because its cheap and has better flow than the b18.

 

is real simple

a b16 head or p73 type r head are desinged for top end power. meaning the air flow is better at higher rpms then a standard p72 head.

now the p72 head(gsr) is desinged for midrange flow and not as much top end.

i would stick with the GSR head, get a 3 angle valve job on it and new valvetrain(this includes valves retainers and springs) a mild polish and port job, and throw in some Toda Spec B or Skunk2 stage 2 cams. Drop the dual runner intake manifold for a skunk2/edelbrock/endyn sinlge runner intake manifold and then get your throttle body taper bored from 70mm to 64mm(you will need an itr throttle body for this task as it is the only one that will boult up to the aftermarket intake manifolds, as well as teh throttle body wire mounting bracket and itr throttle body cable) this will increase your midrange capability as well as your top end.

i plan on going in the direction of the second plan when i finally get the loot together to build my engine.

 

trust me youll be happy with whatever you choose. you wont really see the difference.

 

nice reply, I'm just sticking with my b18 head since i have aready.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by au-gsr &raquo;</TD></TR><TR><TD CLASS="quote">is real simple

a b16 head or p73 type r head are desinged for top end power. meaning the air flow is better at higher rpms then a standard p72 head.</TD></TR></TABLE>
Just to clear things up...there is no P73 head. All B16A and CTR/ITR heads are PR3.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NAonlyIntegra &raquo;</TD></TR><TR><TD CLASS="quote">all i've ever heard about the differences between the b18 and b16 is that the b16 has better flow like the other guy said it is just like the type r head. the b16 head is a popular head used for ls/vtec set ups because its cheap and has better flow than the b18.</TD></TR></TABLE>
Riiight...

a B16A head isn't hand ported from honda... it doesn't have the same valve train...

stick with the B18C head. it has a smaller CC which equals higher CR.

 

Check here to see actual physical differences.

http://m24x.zeroforum.com/zerothread?id=1612

Potential wise I think the GS-R head has a slight advantage due to the shape of the intake ports but not enought to justify the expense of swapping heads.

 

Keep the B18. Period.

You've already got it and its not really any difference between the 2.

Don't make a mess out of potentially a lose of 1hp or a gain of 1hp. Its really not worth the swap. Plus from my reading/understanding the GSR head is slightly better.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kNOwLedGeDA9 &raquo;</TD></TR><TR><TD CLASS="quote">
Just to clear things up...there is no P73 head. All B16A and CTR/ITR heads are PR3.</TD></TR></TABLE>

yes a b16 head is a labeled as a pr3. what about an itr head i could have sworn it was labeled as a p73. could be wrong. just drawing this conclusion from the gsr head, being that it is a p72.

the part number from acura on that head is 12100-p73-j00
which is another reason why i called the itr head a p73 head

 

i only beleive that the b16 head was better because of the rumor of how they called it the "poor man type r" set up. I alwayz heard it flow better too, and thats all i knew flow=good....like the title said..i consider this a newb question, i felt kinda stupid fo asking but you gotta learn somewhere.....

well these are my plans, i'm keeping the b18 head, i got s2 stage 2 cams ready to be put on there, i got springs/retainers and planning to get some ferrea valves, what else do i need to do before i can slap that set up on safely?

 

The only justifiable reason to get one or the other is compression. And even so, it's easy enough to get around that as well.

I'm personally a fan of the P72's pentroof combustion chamber though.

 

thanks for the info