Flowbench

[oldeskewltoy]

what pressure drop will a 5hp vac be able to do?

5hp = 3700W... so you need a 40amp power socket?

This is Flow Performance's smaller system, it can maintain 28" with upto 400cfm flow. Variances are compensated with the software, OR I can spend another $350 on a computer controlled air valve - http://www.flowperformance.com/pwmvalve.html


I'm not sure how they rate the power levels.... but the shop vacs they show DON'T require a 40 amp circuit - http://www.flowperformance.com/shopvac.html

[RT40Corona4AGTE]

3700W / 230V = 17Amps approx. So a 20A circuit will suffice

EDIT: sorry, didn't realize you were in yank land, 3700W / 110V = 34Amps approx.

[oldeskewltoy]

now comes the really hard part....PERFECTLY locating the bore adapter (3"OD gray pipe) into the bore adapter flange(the new white top).

The bore adapter currently affixed to their flange(square bit) and the slip coupling



The slip coupling is a size adapter to go from the full bore of the large tube, down to the bore needed, This one is 82mm. You can see in the above photo the inside bore of the gray pipe has been machined.

In the next photo you can see the top with the new bore adapter/workspace, and below it you can see the hole... note the slip coupling is fitted into the hole




Ok, now what makes this all so hard.... the melamine panel is impervious to any adhesive, so the hole I drill in the melamine must be a zero tolerance fit to the OD of the gray bore adapter, and it must be perfectly placed to fit the slip coupler that is inside the tube




I had a machine shop bore the hole....



so, lets see... I need a few pieces of sheet rubber to seal all the layers, and I need an appropriate shop vac.

[RT40Corona4AGTE]

looking great mate! It is inspiring me to finish my flow bench I started gathering parts for.

You could find some vacuum cleaner motors and build your own reversible vac box ? I have three motors here, approx 2400W each that I am going to play with.

[oldcorollas]

ont heir site, with the "powerful" ones they list, they pulled "145 real cfm at 28"wc" so even though the system can measure 400cfm, you'd need 3 vacs to do that..

if using vacuum cleaner motors, tend to end up looking like this

would 3 be enough?

but in the end, as long as your results correlate to give reasonable numbers, and they are repeatable (to accurately tell changes) then win-win

edit: not criticising, just wondering how much "air source" is enough.

will you get some orifices calibrated on another bench? or they supply calibration "holes"?

[RT40Corona4AGTE]

3 might be borderline, but as you say, aslong as the results correlate and they are repeatable then is a win!

[oldeskewltoy]

or they supply calibration "holes"?

photo in first post... under round black rubber (left side about 1/4 the way down) is an oriface recalibration plate

the next step will be to set up dowel pins in appropriate locations for proper head alignment... Toyota "A" head will be one set, and since I'll be doing a Honda B head soon, I'll plan on placing dowel pins for that as well

[oldeskewltoy]

these should be perfect for holding a head to the bench with great pressure, while NOT damaging the head in anyway. The set I'll be using is Jorgensen's largest - they are 12" from the center screw out to the end of the jaws(reach) and they will open up to accept an object as tall as 17", luckily a 4AG head on my bench is only about 10" tall. The reach should be perfect with the longest reach(far cam cover sealing flange) @ just under 12" from the edge of the table.

[oldeskewltoy]

I'm debating whether I'll need the 2nd one..........

holding a 4AGE head down....



holding a 4AFE head down....

[RT40Corona4AGTE]

I'd say that looks like a win OST

[PrettyCoolWagon]

Well done - be interested to start seeing / learning the results with some before & after tests

[mick08]

this looks very interesting, well done that man!

[RT40Corona4AGTE]

any updates here mate?

[oldeskewltoy]

any updates here mate?

http://www.toymods.org.au/forums/sho...-porting/page3 - post #46, and #48

[RT40Corona4AGTE]

whoops my bad, will check it out. sorry bud didnt see it.