Header Design Using Dynomation 6 & PipeMax 4.7

Indycars

Indycars

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Staff member
At this point I'm making some wild ass guesses, just so I can get some numbers. Dynomation
cannot provide a graph until it has enough information, so that's why I'm making some WAG's.
Just want to get some numbers, then when I pull the top of the motor apart this winter, I can
measure and get some accurate numbers.

Trying to do my research by reading again the chapter on exhaust systems in a book called
"Four-Stroke Performance Tuning". I can recommend this book, I really enjoyed reading all
600 pages.

https://www.amazon.com/gp/product/0857331256/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

upload_2019-10-14_17-9-58.png

I also purchased this book by Gordon P. Blair to further my understand of exhaust tuning. Should be
here this Friday October 18, 2019. It will probably be over my head, but one thing I have learned is you
never get better by doing what you already know.

https://www.sae.org/publications/books/content/r-186/

upload_2019-10-14_17-14-34.png

This thread might move kinda slow in the beginning. I have to work out other things like raising the motor
in the frame, which will require other mods to make that happen.

But I couldn't help making guesses at those dimensions and YES it's not as good so far. I hope to learn
a great deal as I move thru this project.
 
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Experimenting is the only way to achieve any results that you intend to find. Just costs lots of money. I have found that letting others experiment and give the results is what I use to follow unless there was none available.

All four stroke engines will perform differently no matter what you do. I saw Bobby Warren win a championship with one of his cars and instead of a protest, the loser bought his car and proceeded to tear it apart to see what made it so fast. needless to say, the car never ran that fast again even though it was reassembled using the exact same replacement parts.

2 - 383 engines built the same day by the same man using the exact same parts for each engine will be so different from each other that it will show there is no comparison and the question why will never be answered.
 
 
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In stead of using an adapter flange for larger primaries, can the Brodix IK-200 head be drilled
and tapped for a direct bolt-up installation?
 
Indycars said:
I have to work out other things like raising the motor
in the frame, which will require other mods to make that happen.
Click to expand...
I changed my mind, I'm NOT going to raise the motor in the frame. The list in the domino
theory started getting too long .....

- the trans electrical connector would have to be modified
- the remote trans filter line would have to change
- the alternator mount would have to modified
- the steering box adjuster would have to be shortened
- and other things I cannot see yet !!!

Indycars said:
then when I pull the top of the motor apart this winter,
I can measure and get some accurate numbers.
Click to expand...

I've started on the motor as you can see at the bottom. I need to take the heads to the machine shop to get
the exhaust bolt threads repaired. Gerald Brand Racing uses Time-Sert, they cost $20 per hole. I going to
do the prudent thing and have all 12 holes done while I have the heads off. I'm wondering if I should do the
spark plug threads at the same time, although I'm not having any trouble with them at this time ???

https://www.timesert.com/

upload_2019-10-21_19-53-59.png

I watched several YouTube videos, and this one, although crude best explains how the TimeSert works.


FP01_DisassembleMotor01_01552.jpg
FP01_DisassembleMotor02_01553.jpg
FP01_DisassembleMotor03_01556.jpg
.
 
John Hancock,

Look what I found in my boxes, the original SCE head gasket box !!!

Sure makes life easier when trying to keep things from getting bent-up waiting for re-installation !!!

FP03_HeadGasketBox_01558.jpg

I knew John would appreciate this post !

OhMyGod2.jpg
.
 
remember one huge advantage to using the copper head gaskets is they can be,
carefully cleaned and re-used 4-6 times
 
Got the heads and intake manifold cleaned up, so it was time to take some measurements before
I take the heads to the Gerald Brand Racing and have the exhaust bolt threads fixed with the
Time-Serts mentioned above.

I used a 14 gauge solid wire that I had to shape similar to the port to be measured. See the Excel
table for all my measurements.

FP04_IntakePortMeasurement01_01560.jpg
FP04_IntakePortMeasurement02_01559.jpg

Once I had the shape I wanted, I marked the wire with a Sharpie, then I straightened the wire
out and measured the length.

FP04_IntakePortMeasurement03_01562.jpg

Next I did the same for the exhaust port.

FP04_ExhaustPortMeasurement01_01565.jpg
FP04_ExhaustPortMeasurement02_01566.jpg

Next is the Edelbrock Performer RPM Air Gap PN7501 intake manifold. The port length is from
the head gasket surface to the junction with other ports. Notice the divider between cyl #2 and
cyl #3 in the pic below, that's where the measurement stops. Not every port is the same length,
they seem to vary between 3.5 inches and 4.5 inches. See the Excel table for all my measurements.

FP04_IntakeManifold01_01575.jpg

I also needed the plenum volume for the Dynomation 6 simulation that I'm using. There is nothing
simple about this stuff, I have to measure each plenum separately. Then I had to break up the lower
plenum into two volumes and then add them together. See the Excel table for all my measurements.

FP04_IntakeManifold02_01579.jpg

All numbers are inches, square inches or cubic inches.

FP04_ExcelPortMeasurementTable.jpg

This is what I'm working with inside of Dynomation 6. You will notice that for the exhaust headers
I have picked a TriY(Two Collectors) W/1 step Primary. The numbers you see below are before I took
measurements, they were only guesses at that time.

FP02_FirstGuessAtDimensionsForWA_Analysis02.JPG FP02_FirstGuessAtDimensionsForWA_Analysis03.JPG
.
 
If you go with with 2 collectors per side it would be easy to get close or inside the radius rods plus it will sound super! Can the final collectors be megaphones?
 
JohnHancock said:
Can the final collectors be megaphones?
Click to expand...
Yes, the software has a setting for Megaphone. Seems that would make it too loud for the street
thou, what do you think?

I just re-read your comment. Are you thinking there is only two collectors with 2 primary tubes terminating in each collector? Don't know whey they say Tri-Y and then 2 collectors, when there is 3 collectors, the last being where all 4 tubes have a common flow.

Page 198, from the Dynomation 6 User Manual

FP05_HeaderTerminologyFromManual.jpg
 
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Rick I was thinking 2 into 1 then into a megaphone and line all up under the rear end. You can then get long primary’s and get it behind the radius rods to keeping from burning the bosses leg! The sound is behind you! Maybe put the 3” augers in them.
 
I'm pretty sure that would hurt performance too much with 4 collectors having two tubes
each and the primaries would be too long then.
 
I found my answer on the Speed Talk forum, so I downloaded/installed the software and selected
the pull down menu for head designs and found 13 options, with another 8 additional options on
the next line below that. That makes for one hell of a lot of combinations !!!

I also found a lot of posts by Larry Meaux including one for a 20% off, which saves you $30. The
price is normally $150, with the link it's $120.

Link to 20% discount: ----- Note, this takes you directly to PayPal ! -----
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=TNBNTH64A8MKU

This link takes you to the post with the discount link
https://www.speed-talk.com/forum/viewtopic.php?f=48&t=58693

https://www.speed-talk.com/forum/viewtopic.php?t=57087&sid=ec3262cd32f221992fda2c1c510a4785

The yellow highlighted section is the pull down menu and the green section is the info for the
selected pull down menu. One thing I noticed is there does not seem to be a help file, unless it's
in the private section of their forum.

PipeMaxMenu01.jpg

PipeMaxMenu02.jpg
.
 
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Grumpy said:
did you decide to purchase that software?
Click to expand...

Yes I did, just waiting on my license number so I can unlock the software.

Anyone can install the software and run the program. As I understand it, it just
will not calculate any data.
 
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