Which intake manifold is better for my setup?

[Daz81]

Hey guys, im more of a reader than poster on here so bear with me.

Ive been a member for a while, My new motor is now 90% together and im just getting the last few bits, My last 2 builds have been using the AEBS manifold, with faily good results (stock B20b bottom end, BC3+ cams and AEBS, comptech 4-2-1 making 186whp)

The car is a 1991 ED CRX stripped caged and poly carbed up weighing in at 810kg.

Ive just spent a small fortune on this new motor and just dont think the AEBS will cut it.

The spec is as so

B16A2 Cylinder head ported/polished
360ccinjectors
B&M fuel pressure gauge
Magnecor red plug wires (because red ones make you go faster )
Toda C2 camshafts
BDL cam gears
Toda valve springs
Skunk2 titanium retainers
Skunk2 flat faced valves
ARP head studs
84.5mm head gasket
B20B cylinder block with cylinder wall posts. Bored to 84.5mm
Import builders connecting rods
Wiseco 11.5:1 static CR pistons
ARP rod bolts
Golden Eagle VTEC conversion sandwich plate
22 tooth water pump
Toda timing belt
New OEM oil pump
Line honed block
All new bearings
Balanced crankshaft with oilways chamfered
ARP main studs
Homemade crankcase breather system with modified Evo cusco catch can
ACT high pressure clutch
ACT streetlight flywheel
Comptech 4-2-1 manifold (custom 2.5" collector)
Pro speed 2.5" exhaust system
S4C box, Quaiffe LSD and 4.785 F
Tuned on BRE-PWO

The motor was making 201whp with the AEBS before it was taken out for the new crank girdle and a tidy up.

I was looking at the Victor x manifold and they get a great review over here (im in the UK btw)

Now The car is a complete all rounder, its a daily driven, track days, sprints and drag. Im not into revving the nuts out of the car 8500 is about the max it ever really see's.

The victor x is recommended for 7-10k set ups, the Performer for 4000-8200, which is ideal for my kind of driving, I would rather have a longer more powerfull mid range than CRAZY high end power, I obviously dont want it to be dying a death at just over the 8k though, My local shop have heard about the new Skunk 2 composite manifolds which are supposedly going to be pretty good but wont be available until april/may 2009.

Another thing i like about the Performer is the ability to run either 2 banks of injectors, OR run the main 4 from the rear injector holes, its my understanding that the further away they are the better atomisation i will get. And.or i run a bank of 4 N20 directs if i wanted.

Looking at my build specs, what Inlet manifold would you guys recommend for the set up, If youveused the performer/victor etc it would be good to hear your views, and also some Dyno graphs would be great.

Thanks for your time guys.

Daz

[BoostinAllDay12]

Slapp that victor x manifold ftw!!!!!!!!!!!!!!!!!!!!!!
Big dogg statuess....... Or bored out your aebs manifold

[Daz81]

Originally Posted by BoostinAllDay12

Slapp that victor x manifold ftw!!!!!!!!!!!!!!!!!!!!!!
Big dogg statuess....... Or bored out your aebs manifold

Thanks for the input,

The AEBS has allready had a fair amount of internal work, it was opened up and given a good porting and removing all the casting blemishes, as well as beng port matched for the TB and head.

WHY should i chosse the Victor x over the others?

I would rather have a tech discusion as to why i should use other than how much bigger mt status would be.

I know the performer looks like shite, but im not overly fussed about looks, Money is not an issue either, I just want the best posibly set up for my car.

It ran TWM ITB's on it earlier this year and hated them, which is why i want the best possible Plenum/runner set up i can get

Do i ned to provide any more info on the build?

Thanks

Daz

[racemycivic]

Skunk 2 port matched to your throttle body and head, makes serious gains on those setups. The runners allow you to keep mid range power and you still put down big numbers up top especially if your only reving to 8500-9k. good luck with the build

[tekk220]

skunk2 !

[Daz81]

Thank for your inpout guys, But can you give me actualy reasons WHY the S2 is better?

[robfrmny21]

if you want to increase your air intake at high rpm get the victor x

let me ask whats the compression after the head work did they reshape the combustion chamber for the 2.0?

[Daz81]

The head work was port and flow, NO CC work was done, the compression of the motor should be circa 11.8:1 iirc. As said I AM NOT GOING TO BE REVVING MUCH ABOVE STOCK.

The max i will be revving to is 8800. BUt mainly 8500rpm.

surely the Performer is going to be the 1 for the Mid range power, seeing that it is designed for 4-8200. where as the Victor being desigedn for 7-10, The dyno [plots iove seen of the Victor, are pretty shocking at low-midrange below 6k they dont really do anyhintg, infact they look like they my acyually hinder. but above 7k they seem to make very good gains.

If im spending circa $600 (ive got to ship it over to the uk and pay tax etc) then i want something thats going to help me, I would rather have a wider lower power band than a peaky high end set up, thats the reason behind a B20 surely, for mid range and torque? If i wanted 10k with no torque i would have built a B16b.

I know im probably coming accross a bit of an arse, but I would rather have a technical answer than, "just GO BUY ********** manifold coz it rocks". Surely there has to be some guys here who have used more than 1 type of mani on there build, What were there results etc.

Thanks for the help so far.


Dz

[StinkyTurbo]

Finally a tech conversation.

Originally Posted by Daz81

.......I was looking at the Victor x manifold and they get a great review over here (im in the UK btw)

Now The car is a complete all rounder, its a daily driven, track days, sprints and drag. Im not into revving the nuts out of the car 8500 is about the max it ever really see's.

The victor x is recommended for 7-10k set ups, the Performer for 4000-8200, which is ideal for my kind of driving, I would rather have a longer more powerfull mid range than CRAZY high end power, I obviously dont want it to be dying a death at just over the 8k though, My local shop have heard about the new Skunk 2 composite manifolds which are supposedly going to be pretty good but wont be available until april/may 2009.

The Performer X manifold is your manifold of choice. Most of the time when those manifolds are tested, they are tested on stock 1.8L motors(GSR/Type R). I doubt they are testing out thier manifolds on frankenstein, 2L motors with aftermarket headers & camshafts like yours. That manifold will start producing power before 4k rpms on your motor. The reason you start making power with the Performer X manifold before the Victor X is because of the runners. If the runners are shorter & wider, the powerband shifts higher which is the way the Victor X is designed. Your main concern is, is if the Performer X manifold is even going to fit under your hood. From my understanding, Ive heard that the manifold is almost 13inches long. Do EF's even have that much clearence from the motor to the firewall? Type R manifolds & its copies look like tight fits under the hood of a EF & there runners are 7 inches long compared to the 9 inch runners of a Peformer X manifold.

[StinkyTurbo]

Originally Posted by StinkyTurbo

Finally a tech conversation.



The Performer X manifold is your manifold of choice. Most of the time when those manifolds are tested, they are tested on stock 1.8L motors(GSR/Type R). I doubt they are testing out thier manifolds on frankenstein, 2L motors with aftermarket headers & camshafts like yours. That manifold will start producing power before 4k rpms on your motor. The reason you start making power with the Performer X manifold before the Victor X is because of the runners. If the runners are shorter & wider, the powerband shifts higher which is the way the Victor X is designed. Your main concern is, is if the Performer X manifold is even going to fit under your hood. From my understanding, Ive heard that the manifold is almost 13inches long. Do EF's even have that much clearence from the motor to the firewall? Type R manifolds & its copies look like tight fits under the hood of a EF & there runners are 7 inches long compared to the 9 inch runners of a Peformer X manifold.

I just found out your going to have some problems. You will definately have to relocate the MAP sensor/bracket, because it will hit the IACV on the back of the IM. If you have a larger Integra brake booster, it will hit the the manifold.