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Flow bench

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Damo
Posts: 1481
Joined: Tue Aug 08, 2006 11:46 pm
Location: Canberra

Flow bench

Post by Damo » Sun Jan 05, 2020 9:29 am

Well,CRAP!!!


I semi completed a comprehensive post yesterday regarding my DIY flow bench, but the draft didn't save, so this is the short version with the figures.

(Caveat, all these figures should be treated as a rough guide only not to be compared to other figures obtained through other sources, but should be within 5% of each other measured on this bench at this time).

All testing was done at 1.25in/hg(-0.05psi) which can be extrapolated to 20in/H2O(0.75psi) (standard for TB and head flow testing) by multiplying the CFM x 4.


4 x stock RB30xx 55mm Throttle bodies 235cfm (all within 2-3cfm of each other which places them within my error bars)

Stock E15ET 42mm T/B 142cfm (stock 42mm T/B no butterfly 162cfm shaft 'open", 132cfm shaft 'closed')

Stock E15ET airfilter and airbox 117cfm (no filter 143cfm, bottom half of box 217cfm, top half of box 175cfm)

Stock TB on stock top half of inlet manifold Runner#1 87cfm, Runner#2 95cfm, Runner#3 94cfm, Runner#4 90cfm

Slightly modded top half I/M (no TB) Runner#1 79cfm, Runner#2 87cfm, Runner#3 74cfm, Runner#4 83cfm

Reverse flow modded plenum all runners 150cfm

Stock exhaust manifold reverse flow Runner#1 65cfm, Runner#2 no data, Runner#3 78cfm, Runner#4 72cfm

Lower cut half of stock inlet runners Runner#1 84cfm, Runner#2 90cfm, Runner#3 93cfm, Runner#4 89cfm

Stock NA-RB30 AFM 237cfm



Damo
Last edited by Damo on Mon Jan 06, 2020 8:31 am, edited 2 times in total.
Do humanity a favor, use your brain and fight the forces of WOO WOO!


http://www.youtube.com/watch?v=G1mrbxhWU5Y

User avatar
Damo
Posts: 1481
Joined: Tue Aug 08, 2006 11:46 pm
Location: Canberra

Flow bench

Post by Damo » Sun Jan 05, 2020 9:38 am

Old proof of concept
Old proof of concept
IMG_20190707_153240.jpg (55.23 KiB) Viewed 1607 times
Old proof of concept
Old proof of concept
IMG_20190707_153624.jpg (56.9 KiB) Viewed 1607 times
Old proof of concept
Old proof of concept
IMG_20190707_153925.jpg (57.23 KiB) Viewed 1607 times
Do humanity a favor, use your brain and fight the forces of WOO WOO!


http://www.youtube.com/watch?v=G1mrbxhWU5Y

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Damo
Posts: 1481
Joined: Tue Aug 08, 2006 11:46 pm
Location: Canberra

Flow bench

Post by Damo » Sun Jan 05, 2020 4:41 pm

IMG_20200102_164213.jpg
IMG_20200102_164213.jpg (50.92 KiB) Viewed 1604 times
IMG_20200102_170530.jpg
IMG_20200102_170530.jpg (35.85 KiB) Viewed 1604 times
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IMG_20200102_170516.jpg (48.82 KiB) Viewed 1604 times
IMG_20200102_164257.jpg
IMG_20200102_164257.jpg (56.46 KiB) Viewed 1604 times
IMG_20200102_164259.jpg
IMG_20200102_164259.jpg (54.5 KiB) Viewed 1604 times
Do humanity a favor, use your brain and fight the forces of WOO WOO!


http://www.youtube.com/watch?v=G1mrbxhWU5Y

User avatar
Damo
Posts: 1481
Joined: Tue Aug 08, 2006 11:46 pm
Location: Canberra

Flow bench

Post by Damo » Wed Jan 08, 2020 11:44 pm

IMG_20200109_003554.jpg
IMG_20200109_003554.jpg (18.36 KiB) Viewed 1529 times
Do humanity a favor, use your brain and fight the forces of WOO WOO!


http://www.youtube.com/watch?v=G1mrbxhWU5Y

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