Well, pitot on it, a pitot bench it will be.

[evilgeniuscycleworks]

Bruce these are very good pictures, Somthing like this is what I was thinking of building. Some similar designs I've seen use a plenum, what your take on that? How many ranges do you use?
John

[rusty105]

[Jesse Lackman1]

Update;

[larrycavan]

Getting there Jesse....

What! no french fries?

[106-1194218389]

Sweet looking bench! Excellent crafstmanship. I like your web site and the sound of your Dodge engine on the dyno brought back memories.
John

[williamsmotowerx]

I'm torn myself on building a pitot or orifice bench, eagerly awaiting how your project is coming along.

any updates?

[Jesse Lackman1]

When I get a 240 plug wired into the garage I can do the electrical checkout. The bench wiring is done. I plan to blow out all piping before I epoxy the pitot tubes in. I still have to build a cylinder head fixture of some sort. I'm going to send the FP-1 back for the PS3 (dedicated velocity probe).

If you haven't started on a bench I'd recommend looking at the Ford "bench" thread

I still think a setup seperating the elements (blower/blower box, flow element(s), cylinder head box) instead of cramming them in a bench is a great idea. The cylinder head box can be made for wet flow from the start, it might even be possible to design filtering in it so you could port intake runners with the setup running.

It's possible combine the three elements (blower/blower box, flow element(s), cylinder head box) into a long low bench instead of a narrow upright one. One reason I like the idea of seperating the elements is the possibility of putting the blower in a different room so that the only noise you hear when flow testing is the airflow. This is where a regenerative blower would be so much better than vacuum motors especially in a bench where all three elements are combined.

[williamsmotowerx]

there was a jkm 400 on ebay yesterday I was bidding on... #### thing went for $1350! I missed it by $25... so pissed.

maybe I will just buy your bench, then you can build the ford style. PM me a price/location if you're serious.

[FPV_GTp]

[Jesse Lackman1]

I'm using Flow Performance electronics but want to send it back for the real time velocity option.

I flowed a few orifice plates I got from Bruce and one that came with the FP-1.

With four motors running in suction mode;

v3.9.32S
© 2005
Flow Performance LLC
No WS

H20 ACFM SCFM FT/MIN
28.0 307.8 298.6 8091 2.046 plate 300@28 flowed 300@28 on Bruce's bench

28.0 206.1 199.9 5427 1.669 plate 200@28 flowed 205@28 on Bruce's bench
28.0 206.3 200.2 5434

32.5 308.3 299.1 8738 2.046 plate 300@28 flowed 300@28 on Bruce's bench
28.0 307.3 298.1 8089
28.0 307.6 298.4 8099


47.3 209.3 203.0 7152 1.669 plate 200@28 flowed 205@28 on Bruce's bench
28.0 205.7 199.6 5409


57.8 149.7 145.2 5656 Flow Performance plate flowed 134.5 @28
28.0 146.7 142.3 3856

60.0 115.7 112.3 4456 1.189 plate 100@28 flowed 114@28 on Bruce's bench
28.0 113.4 110.0 2986

28.0 307.1 297.9 8085 2.046 plate 300@28 flowed 300@28 on Bruce's bench

The higher depression numbers were what four motors pulled, the SCFM numbers are corrected to what they would be @ 28"

Jesse

[Jesse Lackman1]

v3.9.32S
© 2005
Flow Performance LLC
No WS

DAD 0.070581672

2.046 plate 300@28 flowed 300@28 on Bruce's bench
FP-1 mode 0
Wide open vacuum valve;

H20 ACFM SCFM FT/MIN
33.1 309.2 300.0 8847 four motors (Ametek 115923)
33.1 308.1 298.9 8817

43.2 311.2 301.9 10175 Six motors
43.3 311.2 301.9 10182

48.9 313.0 303.6 10877 eight motors
48.8 313.1 303.7 10869

52.8 313.6 304.2 11326 ten motors
52.8 314.1 304.7 11350

49.0 313.0 303.6 10889 eight motors
48.8 312.7 303.3 10862

43.3 311.5 302.1 10191 six motors
43.3 311.3 302.0 10180

32.9 308.5 299.2 8796 four motors
32.9 308.9 299.7 8808

28.0 307.7 298.5 8093 Four motors set to 28"
28.0 307.5 298.3 8094
28.0 308.2 299.0 8102


m
Mode 0
New value: 2 (FP-1 mode 2 CFm not corrected to 28")
Wide open vacuum valve;

52.6 431.0 418.1 11331 ten motors
52.6 431.5 418.6 11344

48.9 413.9 401.5 10882 eight motors
48.7 413.0 400.7 10859

43.5 387.6 376.1 10192 six motors
43.0 386.4 374.8 10159

33.4 337.5 327.5 8875 four motors
32.7 334.1 324.2 8785

m
Mode 2
New value: 0 (FP-1 mode 0 CFM corrected to 28")

Wide open vacuum valve, plate sized for max flow at this test pressure, ten motors;

29.7 591.9 574.2 16038
29.4 592.4 574.7 15982

Jesse

[106-1194218389]