Quote:
Originally Posted by ZX-10R
Flow in the system is constant assuming the restrictor is placed before the can. If it's installed on the clean side, now you're now playing with multiple variables (assuming dual line set-up Elite is using). I will probably relocate the can to the front to reduce hose length, otherwise Jason explained it well in my opinion. Putting the restrictor under the blower keeps excessive oil from getting sucked into the intake line to the can.
If you want more flow you need a bigger can, that's the problem - there's really no place to put it.
|
This is not true at all, flow comes from vacuum from the throttle body on all systems no matter how they are hooked up, and is variable. Going by your belief, if flow was always constant they why would you even need the secondary line? The system would constantly evacuate on the primary line.
The restrictor is designed to LIMIT MAXIMUM flow, but will also effect minimum flow, when more is wanted (below the maximum amount). Placement of the restrictor prior to the throttle body is all that matters. The system can't flow more than the restrictor will let it. The only variable by hooking it up my way is the secondary line is unrestricted now, and the primary line is more efficient.
We could get into pressure drop before and after the restrictor, but I don't think it makes a big difference, at least on the flow volume of the LT4. If anything, I believe my way would be more efficient as the can would be under the same vacuum as the engine block where in the other way the hose and can are under higher vacuum. The actual flow is the same. This of it like the flow in an AC system where you have high and low pressure side. Now I can tell I'm getting too technical, and maybe a white board might be good here LOL
I believe placing the restrictor on the clean side is more efficient. You have to remember its a closed system with the flow limited by the restrictor, you can't flow more than the restrictor will allow, even the mightymouse has a restrictor so flow is limited, the difference in the mightymouse is instead of having a secondary line, it just vents when there is any pressure that can't be evacuated by the primary line. Now I can't comment about how much oil it traps, but that would more can design and the fact there is no secondary line, it would not be because of restrictor placement.
So basically all systems limit flow, and you can only make it more efficient by removing tubing (and by placing the restrictor on the clean side mimics this)
You say " Putting the restrictor under the blower keeps excessive oil from getting sucked into the intake line to the can. " Just not true, I am sorry, but this is not true.
No, there are two ways, you can increase flow through the can (providing the can is capable of handling it), or get a bigger can, on our camaro there are multiple manufacturers with different sized cans installed, and they all have the same flow as they all have a restrictor. Some are more efficient that others due to can design (Elite has one of the best designs and I have said this before)
Dragsters have a vacuum pump to increase flow, you could put a gigantic can on it, but it still would not work properly without an external vacuum pump as the flow requirement is high.
So it is size of can and flow. On our LT4, if the Elite was maxed out with a stock build, then is it not efficient when you put a pulley and tune on your car?
I don't think the Elite can is maxed out at 3.5CFM, I can't say for sure, only Elite can comment if the EX-2 can is maxed out at 3.5CFM. Personally I don't think it is. So for a bigger build on the LT4 you increase flow, you don't need a bigger can unless you get really crazy.