Royal with cheese

Here's the setup:
stock b16 block
blox b cams
omnipower retainers and valve springs
11:1 comp
DC 4-1 JDM
hondata
2.5" exhaust


Red is ITR manifold, black is b16 mani.
I use it only for racing so starting from 6000 rpm is important to me. Which one would be the better choice? ITR makes more on top but loses from 7000 till 8250.
I think i need something in between; doesn't the AEBS manifold has sligthly longer runners like the b16 mani?
I left the torque out because that's in NM not lb/ft, so i wouldn't get all confusing.
What do you guys think?

SMSP

Figure out what rpm range you use on the track and then calculate your average torque/hp for each IM and go with the winner.

Rollo Lawson

bump for the 1/4 pounder with cheese.

street dreams

nice power for that set up

Royal with cheese

I did some calculations and it seems i'll have to go with the p30. From 6000 on it proved to have more average hp than the itr one. But that 180whp seemed so nice!
Whatever, i'm gonna try the AEBS on also in the future, i''l post it up here.

biassj

I'm running B16 intake manifold and seen similar results. People are quick to judge it and swap it out with a Type R. For a mild setup, I think it's the best intake manifold.

_gurusan_

What kind of TB were you using? That can have a pretty big impact.

Like if you were using a 60mm tb with the ITR manifold....that would definitely make some power loss.

Anders Lundgren

Nice numbers! B16A2 manifold is definately a better choice. How was your A/F and cam-timing during these set-ups.

Could you post the tourqe as well?

hybrid_vtec

I have always been interested in this, b/c I have seen other tests of teh B16 vs ITR IM, and the results are similiar.

I honestly think the B16 IM would be better, but I am waiting to see track result comparisons as well.

_gurusan_

still no answer on the throttle body used?

cuz a 60mm TB with a type R manifold would hurt top end.

Royal with cheese

Throttle body was original B16, i know this doesn't help the itr manifold but that was all i had at the time.
A/F was between 12.6 and 13 all the time, cams gears at 0,0

GetawayInMoscow

Well I should hope a car tuned on the b16 manifold would make more power than the ITR manifold.

This dyno doesnt really help unless you tuned for both manifolds...

quisp

ITR + 64 mm TB will beat out b16a manifold from 5500+ hands down. and huge gains about 8000 and up. in the upper end (9500 area) it is HUGE. overbore your TB and dyno again.

look at this curve... stock unported head... stock JDM 10.4 CR block... just lots of bolt on's including ITR manifold. with out ITR manifld/64 mm TB there's no way the top end will be that good.

_gurusan_

Yeah the plenum entrance is bigger on the ITR manifold so if you used a smaller TB it would REALLY limit top end.

Rollo Lawson

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quisp &raquo;</TD></TR><TR><TD CLASS="quote">ITR + 64 mm TB will beat out b16a manifold from 5500+ hands down.
</TD></TR></TABLE>

from 5500rpm? Wrong.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _gurusan_ &raquo;</TD></TR><TR><TD CLASS="quote">Yeah the plenum entrance is bigger on the ITR manifold so if you used a smaller TB it would REALLY limit top end.
</TD></TR></TABLE>
LOL, that is very funny. so let me get this right, because the im entry is 62mm, and the t/b is 60mm, this will limit top end? that doesn't even make sense. now, if the t/b was 62mm and the im entry was 60mm, then you have an arguement.

quisp

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16C1 &raquo;</TD></TR><TR><TD CLASS="quote">

bump for the 1/4 pounder with cheese...

from 5500rpm? Wrong.

</TD></TR></TABLE>

wrong cuz you said so? lol. before you say anymore, i've been doing honda's since 1995 and we have 215 whp b16a (long block is all oem parts except for valve train) in 2001.

_gurusan_

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16C1 &raquo;</TD></TR><TR><TD CLASS="quote">LOL, that is very funny. so let me get this right, because the im entry is 62mm, and the t/b is 60mm, this will limit top end? that doesn't even make sense. now, if the t/b was 62mm and the im entry was 60mm, then you have an arguement. </TD></TR></TABLE>

Umm....How does that not make sense. A larger TB with a smaller plenum will increase air velocity at all RPMS.

A smaller TB on a larger plenum will create turbulence

hybrid_vtec

Regardless your arguments. i have seen several the B16 IM tested out against an ITR IM and the B16 made power from 6 to 8K. Above 8K it all belonged to the ITR.

So I feel if you are peaking HP below 8K than you may want to go with the B16 IM. I am thinking of testing one against my Skunk2 IM on my B18b!


To say which is better, well I guess go to the track and see which one makes a difference!

WAFFLES

Also I would like to add that I think it really depends on different setups and what not.

My old B16 with stock cams and 11:1 compression made more power with the ITR manifold from 6-8k and lost power from around 4-6k.