U mean the pressure fluctuation on the race PAC , where u just change the smoothing function to make a flat line?
Lol

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U mean the pressure fluctuation on the race PAC , where u just change the smoothing function to make a flat line?
Lol

 

I've decided. The throttle body will be mounted just over the turbo inlet, and the piping after the throttle body will begin tapering through the turn to the main intake plenum, reaching the width of the main intake plenum body by about the point where the throttle body was shown in the most recent pictures I posted.
This is going to call for an elaborate buck to be used for forming the shape of this tapered inlet tubing and front section to the intake plenum.
I'm thinking that I also may install an internal vane in the curve to help the airflow through the turn with the least amount of turbulence.

 

The new throttle body location.
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You have enough distance that the air should be straight coming into the plenum, IMO.

Tom V.

 

OK. Here are a few configurations I've come up with so far. What I want to do is strike the right compromise between design appeal and functionality. The functionality of course being the supply of stable air to each intake runner.
The first example is using a 14 degree included angle feeding from the front to the beginning of the main plenum body.
I'm preferring the second design, even though the taper angle is higher. I'm also thinking of adding an internal flow vane or two in the curve after the throttle body.

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Now to work on the Y plane profile.

 

Like the second template a lot better. Too much expansion too quick on the first picture before/ right at the turn.
Vertical Splitter (dividing wall) starting at the first dotted line after the TB looks like a good idea.
I would have the vertical wall stop 3" before the front edge of the plenum.

Tom V.

 

Sounds good, Tom. I'll get more pics up when I've finished setting up the Y plane template

 

Most of the Y plane done.

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Hope it works as good as it looks.

Tom V.

 

I think this is it. The flat section at the back will be used to mount the coil pack.

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Love the thread. Awesome job on all the work. Thanks to everyone that shared some input.
It was mentioned earlier, about putting a filter inside the plentum for air distrubution. The thought l had was to add a metal screen. It would allow air flow to pass threw, but give enough restriction to feed the front runners (maybe just sticking down, not a complete blockage?). It might take some tuning to find the right % of blockage, but it would be fire proof. Just a thought, thanks again for sharing.
Be safe, schick

 

Like the stacked screens used on some tig welder torch head designs meant to even out the flow of gas exiting the nozzle.

 

At one time I experimented with a plate, not a screen, with many tiny holes drilled through it. The holes were chamfered top and bottom side. That was a lot of hand work. I'll try to post a pic of it, soon.
The air entered a top plenum section at a right angle, then had to drop through this plate to feed the runners. It actually worked. The spark plugs showed even distribution and the performance did not lack in the least due to any restriction that the plate might have added to the airflow.

 

How are you going to form that complex shape? Great thread.

 

I'm going to build a buck to hammer form 1/8" thick aluminum sheets around. Hence, the cardboard templates that I will use to build the buck out of plywood. The same sort of thing I used to form the rear section wall of the plenum.

 

Delete

 

Do you see any reason why it wouldn't?

 

With the throttle valve on the side, the Throttle blade effect is minimal as the air still has to make a 90 degree turn before it "sees" the runners.
Most "camel back" intakes compensate for that deal. Just wondering about the ramp up and then ramp down at the top of the intake. If it really
will do something for the air distribution (except slow down the air and then speed it back up again. Seems like a great spot for a swirl pot effect
at the top. Basically the area fills up with air and then the trapped air just spins vs doing anything for the lower intake and runners.

Tom V.

 

Good point, Tom. I've been thinking the same. I may rethink the shape of the top