this is out side of the tread topic..

pm me if you would like me to explain..

beers

 

OOOOOHHH I get it...

I dont want to shoot down your idea at all...but I am compelled to play devils advocate here and point out the issues that pop into my mind in regards to that idea...so heres my constructive criticism...

the flapper would be required to flap back and forth for each side pretty damn fast in order to properly accomplish this task. this means you have to have some sort of mount for the axle which not only will be required to be as free as possible but also maintain its alignment overtime. because its also in a area which you are guaranteed to see massive amounts of heat, the material used will need to be able to withstand that type of duty. it will also probably have to be a certain weight so that it can "flap" at a speed which can keep up with the pulses. finally because its a moving part its another potential thing which could fail and while flapping you would probably hear a "flappity" noise which might turn some people off.

 

i was going to at first ask you why it was outside of topic since weve been talking about this all night now...however...

your right...this thread was about superchargers and its digressed into a possible heat issue on the housing caused by FI...

i personally blame the time...and the drugs...

 

Like I said its an idea. They have wastegates that can handle the heat so im sure with some R&D it can be done, I dont think youd here it at all. I came to me when I pulled that seporator out of the display block I was working on, hell if you can increase the flow through that por 25 to 50%, you have made a big difference, who nows.

 

Image for reference...

 

LOL

 

My peak and average EGTs are more or less the same between the GReddy manifold/turbo and the much bigger T3/tubular manifold that I'm running now.
I don't think that high-RPM "choking" is pushing the temps up in the ports.
I'd like to see EGTs from a stock motor with the probe in the same location.

 

you are killing me.. i am you are thinking so way outside the box.. with meds..

beers

 

Nice, your the man.

 

That would be some info worth checking on

 

that location would be?

beers

 

Yea I mean I can see where your going with that idea and I totally agree that if something could be done it would help tremendously. Looking at that image and from what I have heard from people who have gone in there...that port in the middle is pretty small compared to the outer ports. I have a hard time believing that the gas simply prefers to exit out of the "outer" side more often.

Again in my mind...its a design flaw but acceptable considering what they were shooting for. I would have preferred that the rotor chambers be separated from each other and perhaps offset so that you would have two equal sized ports on both sides of the chamber with 4 independant pipes...altho that might have created a heating issue...which may also be the real reason they decided to use a smaller "shared" port to limit the amount of heat between chambers...

 

LOL, outside the box is a cause for inovation, think of the motor in your car, Wankle wasnt even in the boxes zipcode.

 

Thanks for the info...it also reaffirms my belief that a choking turbo is not going to be generating additional heat...again I allow myself to be wrong or schooled differently however everything I know tells me that choking flow isnt going to be adding heat...

 

Just stole it from a SAE article on MM site...its good to run your own servers haa haa

 

If the flapper worked it would also remove more heat.

 

In regards to your idea...perhaps instead of flapping back and forth...you take a flat metal "flap" and install it vertically on a pin running thru the center so it moves horizontally...as the pulse comes into the port...the pressure blows the plate to the opposing port and effectively seals it...when the opposing port fires its pressure blows the flap the opposite direction...as long as your flap was large enough to completely cover the port...could withstand the heat...and was thin enough to give you the maximum volume AND retain enough structural integrity to not warp under the back-forth slamming...its wacky enough that it might work...perhaps shorten center pin so it doesnt actually make contact...or just bearly makes contact...and keep it long enough to prevent the pulse from going "around" the plate...

 

This is true...I totally believe that a majority of the heat generated is simply because of the (in my opinion) poor exhaust characteristics...

 

You got the idea, you just explained it better. Im goint to play with it, I wouldnt try it with a turbo for odvoise reasons. You explained it very well, make the hinge sloppy and I dont think there will be any problems.

 

It dosnt even have to seal perfect, as long as the pulse gets directed out and not into the apposing port.

 

OK...well I had originally thought you were thinking of anchoring the hinge towards the rear of the port so when it flapped you had a 45 degree angle inbound to the port which while that would work I dont think would be nearly as efficient as physically moving the entire plate to the opposing side.

The opening due to the angle at 45 degrees inbound would limit how much volume you could get into the port and so it would become your chokepoint. If you remove that dynamic and simply allow the entire plate to move to the opposing side, your restriction would be the volume of the port avail (port-flap width) and how much volume you have due to the port size from the chamber inbound.

 

exactly...its simply a redirection of the pulse energy and an increase in flow capacity...

 

What you think, 30 40 HP, also more flow for more porting.

 

Its times like these where I am reminded how much it sucks to not have a machine shop at my disposal. One of these days I'll get around to building a stirling cryocooler and attach it to an intercooler...bring on the heat!! as you add heat the pump gets progressively cooler as it works muuhaa haaa...

 

This is the kind of think tank that im looking for. Arguing dosnt help at all.