B.Piper

I came across a company called spectre that produce
modular intake components that will allow you
to build up your own custom pipework etc.

Anyone ever tried this and is there any benefit to a duel
intake system?

Thoughts?


http://store.summitracing.com/egnsearch.as...%7C0&rsview=sku

Barry.

Fletch

IIRC Biker1 had ducting all over his engine bay going to 4 separate inlets. All feeding the Stock Airbox.
Looked kinda cool, and I would expect an improvement, but not sure how much.

Fletch

Just found a pic


Notice the four intake holes in the front.

eSeM

The 'fake' vents will be directing air into the engine bay (if it isn't being used to cool the brakes). This would help a bit with the cooling.

The vents on the grill will probably only compensate for having a grill in the first place.

I doubt that they would be directing air away from the radiator.

B.Piper

I have been doing a little thinking and what i come up with is this
Normal Aspiration and Forced Induction are completely different beasts,
so im just thinking about NA. Im not an expert these are just my thoughts.


Main Variables seem to effect the induction system seem to be:

Length
a longer length system helps air speed up making better torque

This also causes a problem at high RPM as the sides of the system
cause resistance and slow the air down.

Capacity
the system has to have low restriction to allow the engine to give
its max power.
It seems if a system is too wide then the velocity through the pipe
work is reduced therefore the venturi effect is less and torque suffers.

Resonance point
if the induction system is tuned this can give more power at a certain
RPM.

Placement
Cold air gives more dense air / more power

Same volume ( duel system )
It would seem that a duel system with the same volume would give the same performance due to flowing the same air and the same resistance
due to smaller duel pipes also the velocities would be the same.

Increased volume ( duel system )
It would also seem that a duel system with larger bore pipes
would suffer from a worse venturi effect due to bore size.
Resistance would be less however due to the air traveling
more slowly. I would expect a better throttle response but lower
torque. This system would have a lower resonance however
meaning more power at a lower RPM ( better? )

It seems that you need to maintain a high velocity through the
pipework whilst giving the engine enough air and also providing
an optimal resonance point. It would seem that a single system
is more suitable for N/A due to the venturi effect.

Given that the S2000 suffers from low down power it would seem
beneficial to lower the resonance point of the pipework to maybe
3000-4000 RPM's.
An AEM V2 reasonance point is about 5200 a short ram is about 5800
it seems the longer the pipe the lower the resonance point.
This brings me to a question:
Could a lower resonance point be achieved by using a system
with a large expansion chamber within the pipe work similar to the way
exhausts work. This sealed system would maintain the venturi effect
whilst dropping the frequency.

hmm... this sounds like the standard Honda box

Air pressure can also have a benefit on the performance of the
system if positive pressure is made within the induction system
increased performance is shown i.e a supercharger.
Using RAM Air scoops has been shown to increase performance.

The Sound of the S2000 with the standard box is a little quiet for my tastes it seems like the best sound is achieved having the filter exposed to the air.

OK so all these observations lets put them together. What i would like is a standard type system where the air filter is mounted within perhaps an air scoop to help provide positive pressure whilst still giving a
nice sound and reducing the resonance point to provide more torque.

Perhaps the standard system could be adapted to do this by removing the filter blocking off the front scoop and adding a second pipe with
the filter mounted on the end , like the AEM and K&N type kits.

anyway ramblings over i have a headache time for a sandwich and an asprin.


B.

Beardie

I have no input to this thread apart from .... it's dual not duel.
Unless you're looking for the multiple intakes to fight each other.

I'll get me coat.

B.Piper

oops

Kiwi-S2000

I think it looks good. But that must be costly?

Kiwi

biker1

The "outer" intakes pictured are indeed brake cooling ducts piped to the eye of each disc/rotor.

The Air intake system on the car has gone through many changes and is different again to the one shown. All I will say is that you can have to much air as well as to little, the system on the car was changed and calculated to meet the power output requirments.
Theres also some "Trick" filtering inside the box along with a Velocity stack, all of which you cant see.

PhenomS2k