Honda and Acura Model Specific Forums

mattcxb18 · 04-08-2003, 07:56 PM

On another post I read that the B18 had better flow then the b16.
I Just wanted to say somethings about that. Below is a chart from the post earlier.

B16 is better, or the same...Look at that graph again. I just noticed something. Look at the valve lift. The b18 doesn't beat the b16 until .450 valve lift.. I reallllly doubt that ANY honda unless it's got a BIG ASS cam is gonna have .450 valve lift. anything in the .450 range of valve lift is a serious cam usually. cranes BIGGEST BADDEST b18 cam only has .472intake / .457 exhaust lift. And that is a race only cam look what crane says about it.
Race Only Roller Cam
Pro stock - all motor - naturally aspirated
Pro class modifications needed
Check valve to piston clearance
Minimum compression ratio 12.5:1

Anyways...With a regular valve lift number, the b16 out flows the b18, or ties with it. I'de like to see a cam that has .500 lift like that chart shows. Just something to think about.
If you wanna check it out. go to Acura VTEC Cams and go to the LAST cam, it's the baddest one. And according to that chart, the b18 outflowed the b16 overall by 2 cfm.
2 cfm isn't shit. You wouldn't even notive 2 cubic foot per MINUTE. So i guess it doesn't matter which head you go with. Just get the one with higher compression. Plus i wonder how accurate that chart is anyways. That's such a close flow number, I wonder if it's correct. 2cfm is sooo tiny.

[Modified by mattcxb18, 11:56 PM 4/8/2003]

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SOUNDEFFECTS · 04-08-2003, 08:14 PM

good info

mattcxb18 · 04-09-2003, 10:34 AM

Also, I would assume that this was a test just thru one port. Not like that makes any difference though.

Chris y0! · 04-09-2003, 10:47 AM

exactly. the range of lift that normal camshafts utilize is where the b16 outflows the b18.

the b18 head only outflows the b16 head after .475 valve lift. no streetable cam lifts that much.

the b16 head flows a little better than the b18 head

white99gsr · 04-09-2003, 11:05 AM

Ok, the B16 head is essentially an ITR head without the polishing, no wonder it outflows the GSR head........NA. The GSR head on the other hand is a far better flowing head for FI. It has better a better swirl effect because of the dome shape.

Chris y0! · 04-09-2003, 11:11 AM

Quote:

Originally Posted by white99gsr

Ok, the B16 head is essentially an ITR head without the polishing, no wonder it outflows the GSR head........NA. The GSR head on the other hand is a far better flowing head for FI. It has better a better swirl effect because of the dome shape.

that's fabulous. we are talking about NA here.

976 · 04-09-2003, 11:32 AM

Is that a 1st generation, or 2nd? I take it that it is a JDM head/block since it's B16.

TORQUEbeast · 04-09-2003, 12:55 PM

good to know.

mattcxb18 · 04-09-2003, 04:25 PM

Quote:

Originally Posted by white99gsr

Ok, the B16 head is essentially an ITR head without the polishing, no wonder it outflows the GSR head........NA. The GSR head on the other hand is a far better flowing head for FI. It has better a better swirl effect because of the dome shape.

How is the same head going to flow better with FI or NA? It should not matter. The flows would come down to the port size and cam lift. It should not matter if air is being pushed or pulled in.

EgxHaTcHxGsR · 04-11-2005, 12:34 PM

uhmm... so if u put a b16 block with gsr head will it be slower or same as just a whole b16?

rukawa1one · 04-11-2005, 01:39 PM

good info, thatsexactly why i'm leaning towards a b16 instead of a b18

civiccpedx · 04-11-2005, 01:41 PM

nice info, HT needs more techies like you

HatchEh2 · 04-13-2005, 05:11 AM

Quote:

Originally Posted by EgxHaTcHxGsR

uhmm... so if u put a b16 block with gsr head will it be slower or same as just a whole b16?

someone should answer this because id like to know aswell

hisownhero · 04-13-2005, 06:08 AM

mad good info Matt

eg crunkmonster · 04-13-2005, 07:53 AM

Quote:

Originally Posted by EgxHaTcHxGsR

uhmm... so if u put a b16 block with gsr head will it be slower or same as just a whole b16?

you would drop raise the compression a little bit

Modified by eg crunkmonster at 10:46 PM 10/30/2005

TEAMTUNNELVISION · 05-19-2005, 03:41 AM

Good reading you did on that chart I wouldnt mind seing that chart my self, but the only reason I think they say the head is better on the g.s.r than the b16 is the fact that the g.s.r head has more compression due to a tighter quench area that gives it more compression. I know you all motor cats love the whole compression deal. As a matter of fact I have a g.s.r head I would like to trade for a b16 head or type r head. Im a boost guy and I need lower compression. Maybe somone could help ? 347-386-7065 Will

http://WWW.TEAMTUNNELVISION.COM

EJ8VTEC · 05-19-2005, 10:13 AM

Quote:

Originally Posted by TEAMTUNNELVISION

Good reading you did on that chart I wouldnt mind seing that chart my self, but the only reason I think they say the head is better on the g.s.r than the b16 is the fact that the g.s.r head has more compression due to a tighter quench area that gives it more compression. I know you all motor cats love the whole compression deal. As a matter of fact I have a g.s.r head I would like to trade for a b16 head or type r head. Im a boost guy and I need lower compression. Maybe somone could help ? 347-386-7065 Will

http://WWW.TEAMTUNNELVISION.COM

Quote:

Originally Posted by eg cookiemonster

you would drop the compression a little bit

K u guys said 2 different things...

vacantskies88 · 05-19-2005, 11:43 AM

the b16 flows better but the b18 yields more compression, no?

honda etr (vw) · 05-19-2005, 11:49 AM

son i would go with a b-16 b1 c5 11d single fire that shit i off the hook

dantastic · 05-19-2005, 12:02 PM

i thought it was common knowledge that the PR3 (B16a, B18C-R) head flows better than P72 GSR head....

mattssi · 05-19-2005, 12:31 PM

the p72 head will yield higher compression.

mattssi · 05-19-2005, 12:32 PM

Your dumb. Not a good way to start you stay here.

IHateJDM · 05-19-2005, 12:39 PM

Quote:

Originally Posted by mattcxb18

On another post I read that the B18 had better flow then the b16.

I've always heard the b16 was better. In fact I don't think i've ever heard anyone say the b18 is better. Good post though.

92b16vx · 05-19-2005, 01:03 PM

Quote:

Originally Posted by white99gsr

Ok, the B16 head is essentially an ITR head without the polishing, no wonder it outflows the GSR head........NA. The GSR head on the other hand is a far better flowing head for FI. It has better a better swirl effect because of the dome shape.

That is so ass backwards.

mwieczorek43 · 05-19-2005, 01:06 PM

Quote:

Originally Posted by dantastic

i thought it was common knowledge that the PR3 (B16a, B18C-R) head flows better than P72 GSR head....

Quote:

Originally Posted by IHateJDM

I've always heard the b16 was better. In fact I don't think i've ever heard anyone say the b18 is better. Good post though.

Im with these two. This post is some shocking revelation

04-08-2003, 08:14 PM	#2
SOUNDEFFECTS Member Join Date: Oct 2001 Location: Lost in turbo world, Florida Posts: 1,286	Re: B16 head vs. B18 head (mattcxb18) good info __________________ Old School Boost Junkie

04-09-2003, 10:34 AM	#3
mattcxb18 Join Date: Sep 2002 Location: This is the Vtec Monster from, HELL, U.S.A Posts: 560	Re: B16 head vs. B18 head (SOUNDEFFECTS) Also, I would assume that this was a test just thru one port. Not like that makes any difference though.

04-09-2003, 10:47 AM	#4
Chris y0! Join Date: Sep 2002 Location: 805, socal, USA Posts: 2,994	Re: B16 head vs. B18 head exactly. the range of lift that normal camshafts utilize is where the b16 outflows the b18. the b18 head only outflows the b16 head after .475 valve lift. no streetable cam lifts that much. the b16 head flows a little better than the b18 head __________________ I agree

04-09-2003, 11:05 AM	#5
white99gsr Junior Member Join Date: Mar 2003 Location: va, usa Posts: 188	Re: B16 head vs. B18 head (Spoon Hybrid) Ok, the B16 head is essentially an ITR head without the polishing, no wonder it outflows the GSR head........NA. The GSR head on the other hand is a far better flowing head for FI. It has better a better swirl effect because of the dome shape. __________________ 92 B18C-T powered CX 97 cobra- daily driver http://images.honda-tech.com/set1/smile/emsmile.gif

04-09-2003, 11:32 AM	#7
976 New User Join Date: Jul 2001 Location: Extraordinary Machine Posts: 4,517	Re: B16 head vs. B18 head (Spoon Hybrid) Is that a 1st generation, or 2nd? I take it that it is a JDM head/block since it's B16. __________________ My garage sale! [b]Take pride in the human race, not your country. The best part of being imperfect is the room to improve. "...I fight for the ones who can't fight, if I lose at least I tried..." <FONT COLOR="red">Slipknot</FONT> <FONT COLOR="blue">B5 2.8 (Audi) EH2 1.6 DOHC VTEC (Honda)</FONT> - Stolen 5/01/04

04-09-2003, 12:55 PM	#8
TORQUEbeast Join Date: Apr 2003 Location: Sol, CA Posts: 2	good to know. __________________ If you're still in control, then you're not going fast enough. http://images.honda-tech.com/set1/smile/emwink.gif

04-11-2005, 12:34 PM	#10
EgxHaTcHxGsR Junior Member Join Date: May 2004 Location: Tacoma, WA, U.S.A. Posts: 30	Re: B16 head vs. B18 head (mattcxb18) uhmm... so if u put a b16 block with gsr head will it be slower or same as just a whole b16?

04-11-2005, 01:39 PM	#11
rukawa1one As long as I dont have to take out any more Metal Gears Join Date: Aug 2003 Location: Socal, CA, USA Posts: 2,267	Re: B16 head vs. B18 head = Good Info (mattcxb18) good info, thatsexactly why i'm leaning towards a b16 instead of a b18

04-11-2005, 01:41 PM	#12
civiccpedx Join Date: Sep 2004 Location: JERSEY, USA Posts: 1,399	Re: B16 head vs. B18 head = Good Info (rukawa1one) nice info, HT needs more techies like you __________________ Great turbo write-up/how-to http://images.honda-tech.com/set1/smile/emthup.gif http://www.honda-tech.com/zerothread?id=1263795

04-13-2005, 06:08 AM	#14
hisownhero Junior Member Join Date: Mar 2004 Location: Rochester,, NY, USA Posts: 317	Re: B16 head vs. B18 head = Good Info (mattcxb18) mad good info Matt __________________ AP1 New Formula Red EJ2 Milano Red ... you will be missed http://images.honda-tech.com/set1/smile/emsad.gif Vouch: jaa1311 (ITR Steering Wheel)

05-19-2005, 03:41 AM	#16
TEAMTUNNELVISION Join Date: Nov 2004 Location: POUGHKEEPSIE, NY, USA Posts: 25	Re: B16 head vs. B18 head (SOUNDEFFECTS) Good reading you did on that chart I wouldnt mind seing that chart my self, but the only reason I think they say the head is better on the g.s.r than the b16 is the fact that the g.s.r head has more compression due to a tighter quench area that gives it more compression. I know you all motor cats love the whole compression deal. As a matter of fact I have a g.s.r head I would like to trade for a b16 head or type r head. Im a boost guy and I need lower compression. Maybe somone could help ? 347-386-7065 Will http://WWW.TEAMTUNNELVISION.COM __________________ Im all BUSINESS and build my cars to give my competion the same ! http://images.honda-tech.com/set1/smile/emthdown.gif

05-19-2005, 11:43 AM	#18
vacantskies88 Member Join Date: Feb 2005 Location: PA Posts: 1,203	Re: B16 head vs. B18 head (EJ8VTEC) the b16 flows better but the b18 yields more compression, no?

05-19-2005, 11:49 AM	#19
honda etr (vw) Join Date: May 2005 Location: highland, ny, u s a Posts: 6	Re: B16 head vs. B18 head = Good Info (mattcxb18) son i would go with a b-16 b1 c5 11d single fire that shit i off the hook

05-19-2005, 12:02 PM	#20
dantastic Join Date: May 2003 Location: 818 y0, CA, USA Posts: 3,040	i thought it was common knowledge that the PR3 (B16a, B18C-R) head flows better than P72 GSR head.... __________________ I miss my hatch!

05-19-2005, 12:31 PM	#21
mattssi Member Join Date: Nov 2003 Location: salem, or, usa Posts: 1,306	Re: (dantastic) the p72 head will yield higher compression. __________________ "Don't draw fire; it irritates the people around you." - Your Buddies

05-19-2005, 12:32 PM	#22
mattssi Member Join Date: Nov 2003 Location: salem, or, usa Posts: 1,306	Re: B16 head vs. B18 head = Good Info (honda etr (vw)) Your dumb. Not a good way to start you stay here. __________________ "Don't draw fire; it irritates the people around you." - Your Buddies

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