DIY flowbench?

[Shirley, Mark R]

a few years ago in Popular Hot Rodding, they showed a DIY flow
bench that seemed pretty simple to build. I have half the article
somewhere, but not the full monty.

> -----Original Message-----
> From: David Hunt [mailto:bamainc at home.com]
> Sent: Thursday, July 05, 2001 6:01 PM
> To: diy_efi at diy-efi.org
> Subject: Re: DIY flowbench?
> 
> 
> Barry,
> 
> In response to your question, I haven't seen any air flow 
> rate benches.  I
> have been thinking along the same lines as you.  A vacuum 
> source could be
> controlled by using the vacuum signal as feed back to a motor 
> controller.
> The flow could be measured by something like a MAF sensor.  
> This deluxe
> system could be relatively accurate from system to system.
> 
> Also, A good vacuum source shouldn't be necessary if the 
> differential vacuum
> is held between input and output the power required to hold 
> the differential
> pressure between input and output would indicate the flow.  
> While sort of
> repeatable from run to run, it might not be repeatable between setups.
> 
> Other ideas would be helpful.
> 
> dh
> 
> 
> 
> ----- Original Message -----
> From: "Barry Tisdale" <btisdale at cybersol.com>
> To: <diy_efi at diy-efi.org>
> Sent: Wednesday, July 04, 2001 9:20 AM
> Subject: DIY flowbench?
> 
> 
> > Anyone done anything in thid area?  I just broke rings or 
> lands in my Sy
> > engine's #1 cylinder, which I hear is notorious for this.  
> Was thinking of
> > a vacuum cleaner applied to the port side each passage of the bare
> manifold
> > & measuring vacuum produced there.  Could use a manometer 
> or a MAP sensor;
> > idea is to equalize flow between runers.
> >
> > Comments?
> >
> > Thanks - Barry
> > 
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> 
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