hi im currently running a fully built b20 vtec setup b20b b16 head makin 226whp. My head is getting choked with a jdm itr intake manifold and a stock b16 throttle body. I need a recommendation to upgrade asap to be back on the dyno next week. im also runnign a jdm itr header which is coming off im replacing it with a knock off hytech header. i had thoughts of itb's but heard alot of mixed things. please let me know thanks.

 

bump... need some help possibly match porting the jdm intake manifold from endyn and matching it with a beastie throttle body!!!

 

Well where are you looking to make more power?
What is your setup now?

 

setup is b20 b bottom ended bored 84.5mm cp pistons 12.5cr, eagle rods, arp rod bolts, polished crank, head studs, block guard, type r oil pump, type r water pump, b16 head full port and polished, full rev racing vavle train, buddy club spec 4 cams, skunk 2 cam gears, rc 440 injectors, aem fuel rail, jdm type r intake manifold, greddy timing belt, stock b16 throttle body, cold air intake, jdm type r header ona full 2.5 inch rsr exhaust no cat. tranny is b16 with type r 4.7 final drive and a jdm type r lsd. made 226whp on dyno at 9000 rpm and motor wanted more fuel and rpms. i never went back to retune it b/c the motor was freshly built and we didnt want to swing it higher but now im finally got some ambition so im gonna upgrade intake manifold and thorttle body and im gonna grab a knockoff hytech header. i probably left out some things on the motor but its pretty fully built. im thinking of sending my manifold to endyn and have it match ported to the head and maybe grabbing a 70mm throttle body. idk suggestions would be helpful maybe if someone ran a nasty intake manifold setup and had suggestions let me know... thanks

 

Put the VictorX manifold on there with a 70mm t/b and watch it pick up around 15hp. I have done the tests on a similar set-up .

 

nice i was talking about the victor x but my boy told me to send out my itr and port match it but ide rather buy a new one what throttle body would u recommend? and what do you think about velocity stacks on a intake? also i heard full race made a nasty intake setup with a tapered throttle body to manifold but i havnt seen it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00b20vtecoupe &raquo;</TD></TR><TR><TD CLASS="quote">nice i was talking about the victor x but my boy told me to send out my itr and port match it but ide rather buy a new one what throttle body would u recommend? and what do you think about velocity stacks on a intake? also i heard full race made a nasty intake setup with a tapered throttle body to manifold but i havnt seen it. </TD></TR></TABLE>

Trust me you will not regret it. If I tell you what size I am running most people will laugh but 70-72mm should be more then enough. Velocity stacks is what I always run , always have made good power with them. From my understanding the Full-Race manifolds were designed for turbo but I am not sure since I have never tested one. Everyone says that the Edelbrock was designed for turbo as well but here is a graph on an 81mm bore that I did :



The graph was cleaned up after we posted this chart but you get the idea.

 

are you running on stock pistons?

 

no they are cp 84.5mm 12.5 cr.

 

victorX is ehhh

performerX is where its at.

I have a hytech header for sale that would be "perfect" for your motor..

 

Victor x works best for 12.5cpr

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20_driven &raquo;</TD></TR><TR><TD CLASS="quote">Victor x works best for 12.5cpr</TD></TR></TABLE>

What? So you are saying that I can build a 86x95 and run 11:1 and the victor x wouldnt work well?
I think you need to do a little more research . . .

I will also agree that the victor x with a 68-70mm TB will work out well for you.
While the plenum size and short runners were definitely designed towards a boosted setup, i have seen it work well in countless all motor builds not very dissimilar to yours. .

The performer x would be another good option , but you may be at the point now where in the near future you may be surpassing what the performer x can effectively handle if you continue to mod. .

I have a friend running a ported Type R manifold on a 250hp B and it works well for him, so that isnt so bad either. But in essence of time that choice is yours.

85x92, 12.5:1, skunk3s, ITBs - made 248hp
Switched to a full race mani and 68mm TB - made 240hp . .
I think the Full race is a little excessive for an AM build . . .

Reality is that you have a plethora of good manifolds at your disposal to choose from. . . Switch to an H and then see that drastically change haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2fastGSR &raquo;</TD></TR><TR><TD CLASS="quote">

What? So you are saying that I can build a 86x95 and run 11:1 and the victor x wouldnt work well?
I think you need to do a little more research . . .
</TD></TR></TABLE>

LMFAO! Are you kidding me? If the victor x works well for a 12.5cr then wouldn't it work for 11:1 as well ? I have a victor x w/ 70mm tb on my type r. Im still port matching my victor x. i have yet to test it out.

 

it works.. depends on tuning and parts used in the motor..
victor X is a good manifold i'm just saying from what i've seen.. its not always constant... people mixed opinions about it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b20_driven &raquo;</TD></TR><TR><TD CLASS="quote">

LMFAO! Are you kidding me? If the victor x works well for a 12.5cr then wouldn't it work for 11:1 as well ?<U></U> I have a victor x w/ 70mm tb on my type r. Im still port matching my victor x. i have yet to test it out.</TD></TR></TABLE>

Keep on laughing then genius because you just proved my point . .

You said it works best with 12.5cr, I asked why you believe that to be true?
The example i gave was to see if you understood the point i was trying to make. Maybe i wasnt clear enough. Let me make it more simple to comprehend.

The manifold could care less what compression the motor is. Thus making your comment irrelevant.
The manifold cares how bigger the motor is and how much air it can actually flow.
None of which really has to do with compression ratio.
I gave the example of an 86x95 B series, which is a rather large b series build. I used a lower compression ratio to see if you would tell me that it would not work well on that type of setup ( which i know it does).

All i pretty much wanted to say is that your comment about a manifold working best with a specific compression ratio is pretty off base . . .

 

WOW! thanks for the info.

 

i was just curious at what rpm are u making 226whp

 

never mind i saw that u said u make peak power at 9000 rpms
if this helps, according to the edlebrock website, the Victor X is for 7000-1000rpms
and the performer X is for 4500-8200 rpms, so i guess the choice is up to you, but isnt the B20 not able to handle high revs?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gmen08 &raquo;</TD></TR><TR><TD CLASS="quote">never mind i saw that u said u make peak power at 9000 rpms
if this helps, according to the edlebrock website, the Victor X is for 7000-1000rpms
and the performer X is for 4500-8200 rpms, so i guess the choice is up to you, but isnt the B20 not able to handle high revs?</TD></TR></TABLE>
i rev to 9k+ and i run the performerX it performs fine at high rpms..

 

yea we tuned it originally to 9000 but it was making power at 9000. The motor wanted more fuel and more rpms which my tuner said was rare at that high and he said to go wiht it b/c the motor was just built for it. As for the b20 taking high revs its all up to the motor and the build. As for now my motor is swinging 9000 no problem and im at almost 10000 miles and its never given me a problem. Im definatly gonna grab probaly the victor x b/c my tuner wants to move my air fuel up and possibly swing rpm's to 9300 or 9400 as long as its making power. I have room to make power on my timing to b/c we have barley touched it and its low so im expecting good things when i go retune. So new mani possibly a 70mm thorttle body and hytech header which i might even run an electronic cutoff on my exhaust and well see what i make im hoping 240.

 

i actually was looking on my tuners website and seen my car figured ide throw the link up so you can check it out with the dyno graph. http://www.trickengineering.co...y.htm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00b20vtecoupe &raquo;</TD></TR><TR><TD CLASS="quote">i actually was looking on my tuners website and seen my car figured ide throw the link up so you can check it out with the dyno graph. http://www.trickengineering.co...y.htm</TD></TR></TABLE>

you should still be reving a few hundred more rpms pass your peak power so you fall into your peak torque range.. if your making power at 9 you should be eving to at least 9300~9600 to put you back into your torque range.. so ...ya..

 

yea the only reason i am not swinging that high is b/c when we originally tuned it it was like the day after it was built so my tuner didnt want to push it so i was going to go back and rev around 9400 to 9600 after it broke in but i just never went back but now i actually have ambition lol and im gonna upgrade those things and see how it goes on the dyno. only 2 years late lol