Quote:
Originally Posted by drewski86
http://www.rx7club.com/showthread.ph...ghlight=intake
This will get you started. If you do the math it will get you close enough, but you will want to plan on making adjustments if you want to pull all you can out of it; every motor is going to want something different. Don't expect to get it right the first time, but close may be sufficient for your needs.
|
Right on I'll check it out and post back my thoughts w/ math. (I heart math)
Quote:
The throttle body needs to be big enough that it's not a restriction, but not too much bigger.
By multi venturi to you mean multiple injectors?
|
Negative. Multiple TB Plates. Is 4 Better than 2 better than 1? Or is it the other way around, or should the pick be based off of the CFM, what determines the proper CFM if the area's are the same, ie: A(4)=A(2)=A(1), which by association means that the CFM is equal between all of them. Would that mean that velocity would be increased with multiple smaller areas?
Quote:
The plenum should be shaped that each rotor gets equal amounts of air. Size depends on that application but I would guess around 1-1.5 liters.
Runners should be round since the stock lower manifold will change the shape for the ports. If you want a small taper before it hits the lower manifold will increase velocity, but you don't want to go too extreme. Length is going to depend on the application, and remember, the primaries and secondaries are going to want different lengths but you want them tuned to the same RPM.
|
I think I understand, but could you clarify just to be safe?
Quote:
|
Hopefully that will get you started. Keep in mind, all this is going to do is point you in the right direction. Testing is where you're going to get answers. Fortunately since you're turbo you can add boost to overcome a poor manifold but that will only get you so far depending on how poor the manifold is.
|
Believe me, I plan on working out the details and construction prior to even taking apart the engine for this. I'm going to be extremely focused with respect to this setup so I'm going to be doing everything possible short of shelling out $$$$$ to do a CFD model of it.