Mailing List flyrotary@lancaironline.net Message #59820
From: <shipchief@aol.com>
Subject: Re: [FlyRotary] Re: combo fuel pressure regulator/filter option?
Date: Wed, 22 May 2013 11:56:55 -0400 (EDT)
To: <flyrotary@lancaironline.net>
I'm using the original Mazda fuel pressure regulator for the 13BT. It taps manifold pressure to increase fuel pressure with increase in boost pressure.
-----Original Message-----
From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, May 22, 2013 8:11 am
Subject: [FlyRotary] Re: combo fuel pressure regulator/filter option?

Depends on the size and type of injectors used.  Would probably work ok with the red ( low flow rate ) Renesis injectors in the primaries.   Stock NA 2nd gen, maybe, larger 550 cc Turbo injectors- probably not.

Tracy

Sent from my iPad

On May 22, 2013, at 10:18, Charlie England <ceengland7@gmail.com> wrote:

Good point. I wonder how the Corvette ECU handles it, & whether Tracy's ECU can be tuned to compensate.

Charlie

On 05/21/2013 11:11 PM, Bill Bradburry wrote:
Charlie,
You may want your pressure regulator to follow your manifold pressure.  This would be especially useful at idle if you were set at 58 lbs.  Injectors are flow rated at about 43.5 lbs, so at 58 they would put out more fuel than they were rated for, which could make getting your idle set correctly a problem.   Or maybe not??
 
Bill B
 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Charlie England
Sent: Tuesday, May 21, 2013 8:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] combo fuel pressure regulator/filter option?
 
Anyone seen one of these?
http://www.gmpartsdirect.com/results.cfm?addtocart=1&addpartnumber=19239926&singlepart=1&partnumber=19239926
(Other sites have pics; this was just the lowest price I saw with a quick search.)

I just saw it in a car magazine about an LS motor installation. Apparently, the pressure is set at ~58 lbs, but that's the approximate set point for RX-8 cars, right? I've already set up my dual fuel pumps, dual GM filters as used by Ed A, and an aftermarket 'hot rod' adjustable regulator, but this device looks attractive. The weight savings (& money savings) seem to make it an attractive option.The only downside that's immediately comes to mind is whether the entire assembly must be replaced to change the filter.

Charlie

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