HE351VE Manifold Development

[casuprock]

I thought we were going 1-1/4"?

"In the beginning, God created Fluid Mechanics by Bruce Munson": Amazon.com: Fundamentals of Fluid Mechanics (9780471442509): Bruce R. Munson, Donald F. Young, Theodore H. Okiishi: Books

I can't speak from experience because I'm not a manifold fabricator.

Dr. Munson would say:
At the same flow rate 1-1/4" will have a laminar flow velocity roughly 1.4 times higher than 1-1/2", but the head losses will be greater especially in minor loss areas like bends. Look at the moody diagrams. The runners should be the smallest diameter that keeps your flow laminar. Also, the runners should be long enough for flow to fully develop, otherwise the exducer efficiency will go down since undeveloped flow is "stickier" than developed flow.

By the way Kevin, you are correct about long runners they help the flow profile develop nicely in the pipe.

Hey, can Brian weld on an extra bung at the collector in case we want to do exhaust backpressure measurements? I have a feeling that will be useful for our testing.

 

[92awdgsx]

I can weld anything on there you want.

 

[casuprock]

Weld this thundercats logo on there, but don't tell Kevin it'll be a surprise. Haha
"ThunderCats" Logo Belt Buckle - black | eBay

 

[kthackst]

Actually... I am ok with this.

 

[92awdgsx]

We can have one cut from stainless. I have no issue with that.

 

[92awdgsx]

Here is what has to be done to make a T4 flange work. I started the collector, this is where it is at.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[casuprock]

Actually... I am ok with this.

 

[Vetal]

Not exactly about manifold but related...
Has anyone thought of lightening exhaust housing? Even couple of pounds would be good. Actually cold side can be lightened too I think