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Old 07-04-2018, 11:48 AM
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OK, I finally found something similar to what I was trying to describe. This Lamborghini is adapted to fit in a marine application, I also found this concept in a lot of marine engine applications but they were all cast aluminum block manifolds.

But note how all the smaller cylinder port stubs run into the side of a much larger log tube? Also note how these stubs are attached and aimed to create a swirl effect inside the larger tube.

The same concept can be used to fabricate something just like it but with the stubs being directed down and into the backside of the larger tube so that it is lower along side the engine. And your turbo collector flange can be attached anywhere it fits best to the side of the larger tube. And if you need a waste gate bypass it can be added also.

This is very similar to how the first aircraft turbo manifolds were made. Simple yet very efficient because they all come out into a much larger tube rather than all being bottle necked into a small tube going towards the outlet. Basically a "plenum" chamber but for the exhaust.

Does this help visualize the concept for you?

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Old 07-04-2018, 12:21 PM
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Here were my thoughts when I first saw this concept and design...

Being a larger Plenum Chamber all the the port outlets are going to encounter the same equal pressure and resistance, ie "tuned". And because it is a pressure equalizing chamber the outlet can be located anywhere to the chamber and make no difference in overall efficiency because of where it is located. And because of how the smaller tubes are aimed it creates an advantageous swirling effect that helps reduce port flow from affecting the flow of any of the other ports.

Anyways just wanted to toss the concept at you in case you might find something useful from it for your design.

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Old 07-04-2018, 03:21 PM
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I think we are on the same page.
Attached Thumbnails Cheap 4.0 head-0211181026.jpg  
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Old 07-04-2018, 04:19 PM
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Originally Posted by Cummins93 View Post
I think we are on the same page.
The only difference would be rather than all those stubs running into the same diameter tube they would run into a larger diameter collector tube creating a plenum expansion chamber on it's way to the turbo outlet. Like let's say 3 - 3 1/2 inch. The advantage I think with this would be equal back pressure resistance on all the ports and a smoother freer flow.

Just like how an intake plenum chamber creates equal vacuum pull to all the intake ports no matter how far they are away from the source. An equalizing chamber of sorts to help reduce the draw difference between longer tubes and shorter tubes. Does that make sense?

Taking all those stubs and running them into a same sized tube like that one has got to be bottlenecking the system at high RPM flow and reducing the overall potential of the system. Compact and bottlenecked or compact and not bottlenecked would be the only real difference.

And assembly wise, it would eliminate the need for all the T joints and elbows in that. Those stubs could all just be welded into holes in the side of the larger diameter tube.

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Old 07-05-2018, 05:20 PM
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Oddly enough a friend of mine had a 0331 head laying on the shop floor for the price of free! Or at least an 11 pack at a yet to be determined time.
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Old 07-05-2018, 05:31 PM
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Originally Posted by Cummins93 View Post
Oddly enough a friend of mine had a 0331 head laying on the shop floor for the price of free! Or at least an 11 pack at a yet to be determined time.
Good deal! Had one with him did ya? lol

Edit: Just noticed it is a future arrangement. lol

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Old 07-11-2018, 07:06 PM
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BugOut4x4. Are u talking about Boostwerks' design?
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Old 07-12-2018, 06:03 PM
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Originally Posted by XJwonders View Post
BugOut4x4. Are u talking about Boostwerks' design?
Know what Neal? That very well could have been where I saw it! let me take the time to go look and see Sir.
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Old 07-13-2018, 07:18 AM
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Originally Posted by XJwonders View Post
BugOut4x4. Are u talking about Boostwerks' design?
I could not find an image of the Boostwerks manifold Neal. But I did run across a couple that help to visualize the concept. The turbo flange can be mounted anywhere on the larger tube without any change in efficiency.



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Old 07-13-2018, 09:43 AM
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And if you aim the incoming tubes correctly it would create a swirl effect in the chamber on it's way to the pressure outlet for the turbo.

If you leave the small tube ends intact it would also cause a venturi effect created by the swirl rotation which would aid in scavenging.






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