eg drive slow

Im planning on starting my first all motor build this spring . I have decided to go with the b20z block over the b20b block. After some research on the internet i have to come a conclusion the b20z block produces more power and higher compression(according to blogs i have read). Im planning on using a b16Lsd tranny. I am leaving the block as is for now, bone stock. I am undecided on witch b16 or a gsr head to use? does any1 know witch would be a better settup and create more power ?

SteelcityLude

Bad idea unless you don't plan on reving past 7k. Do some more research. My advice is get which ever bottom end is cheaper and build it around what your long term goals are.

eg drive slow

What is a bad idea ?

slowsleeper

stock rod bolts on the B20 blocks are the same ones used on D16 engines and they tend to snap when ran hard or sees high rpms

00_EKHatch

I've ran a few LS/Vtec setups, B16 head will get you more overall flow. And you have better intake manifold options. Definitely be careful when building it, if anything upgrade to some eagle rods. I ran mine to 8400, but I always had the thought in my mind. There is a good thread here somewhere talking about rod ratio compared to the engines stroke. Just do some good research.

DirtyDA9

^^ B16 barely flow better, maybe 2-3cfm's difference, the GSR will yield a little higher compression and more quench. And there is no need for eagle rods, just get ARP rod bolts and if you can find a shop to do it, shotpeen the rods.

Don't forget VTEC oil and water pumps and VTEC timing belt.

Sounds like you need to do a lot more research my man. Google is your best friend right now.

crxsi1

I would personally go with the b16 head.... Even though it only flows a little better u have better options with it... They use the same head for the type r motor so think about that.... When and if u decide to do internals like pistons and stuff u will have better clearances to play around with and u have better IM options... but they both work well so to each there own....

DirtyDA9

It's only the same casting as the type-r, nothing more. And as for "better intake manifold choices" there are a lot of aftermarket intake manifolds being made for the GSR now, so that arguement is no longer worth stating. And what do you mean better clearances? The fawk are you talking about?

SteelcityLude

Well for a b20v on a mild build I think the b16 head would be a better choice only because people are seeing nice gains using a factory or ported itr intake mani. Now if I was going for a more aggressive setup I would opt for the Gsr head bc of the quench pads and a different intake mani like the victor x.

Honestly either or will work and you will hear two sides to every story the subject has been beat to death. Get which ever you can find, if you find a b16 a stock itr mani works great if you get a Gsr I would probably go s2 on a mild setup.

It's been said google is your friend, I'm sure any question you may have on the subject has been covered

TealCivic115

IMO I would rather run the B16 head than the GSR head. Because of the ITR Intake Mani option, and the better flow of the head. Compression can be gained from better pistons or head gasket thickness.

GagnarTheUnruly

iTrader: (3)

You should probably spend more time thinking about what to have for dinner.

Red_Army

at best it gets 2 cfm apart.

really once you do any headwork on it that difference would be negligable.

get whichever you can for cheaper and run it.

HYREV2NR

I've been told by more than one reputable shop, with equal builds you tend to see a bit more torque with the GSR head and a bit more horse power using the B16 head. WHP and WTQ I'm referring to here.

gutted-dx

iTrader: (1)

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/finally-made-dyno-2921715/

I have had the motor for at least 6 years. Before this i had BC stg2 cams in the stock p75 head. Stock rod bolts.

TealCivic115

^ Nice numbers for a stock b20. Liking the black manifolds and valve cover. In the end, either head will do its job appropriately. And like what RED ARMY said, whichever you can get a hold of will work.

EsotericImage

iTrader: (8)

Im just going to put my .02 here..

Ive seen plenty of B20V dynos and ive made more power with the 9:6 CR B20B with the P8R head then most vtec builds. Mine had LS mani,CAI,and 4-1 to 2.5" straight thru with stock cams.

Now the P75 heads suck, but if it were me, i would source a P8R head and get some work done and add in some simple street cams. (along with rod bolts if your budget allows)

again, just my .02

m_shake

X2, it's really funny when people already have a complete gsr and swap on a b16 head for mad type r powa!! And a lil less compression too Like others have said, once you start porting either one it doesn't matter. I like gsr's due to small chambers with better quench.

shinobi550

This is a endless question lol. It's all about what kind of power you want they both have good and bad points, So there's no right or wrong answer.
B16 Head:TopEnd power little high flow, and more parts for it,more chamber volume.
B18/GSR Head: Mid power and torque gain, also cheaper way for more compression.
I think that's why Honda use B16 head Type R for High rev's and the head flow's little better . But that's my opinion like I said no right answer. Good luck with your motor, Just build it right take your time.

HYREV2NR

^^^I couldn't agree more.

gutted-dx

iTrader: (1)

Dyno chart? Isn't the cc bigger in the P8R head?

EsotericImage

iTrader: (8)

47cc
dyno was 149/144 thats more torque then alot of the B20 vtec builds ive seen.

GagnarTheUnruly

iTrader: (3)

lol what -- torque, maybe, but not power. Nobody would be happy with 149 whp on a B20 vtec.

EsotericImage

iTrader: (8)

^^
you obviously dont know **** about power. Horsepower is a made up number. it doesnt exist. Torque is what actually moves the car.

So do some research and learn before trying to call someone out with mis-information.


5.9-liter inline six Cummins Turbo Diesel with 325 horsepower and massive 610 pound-feet of torque at only 1600 rpm.
http://www.youtube.com/watch?v=_BrZXpH3NrY

DirtyDA9

:ugh"

Maybe 80hp and 200ft-lbs would be good for a 40yard dash, but not a quarter mile.

EsotericImage

iTrader: (8)

lol, that would be a stump puller


Torque + engine speed = horsepower #