datsun-roadsters
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Re: [Roadsters] --> elect. fuel pumps, elect. fans

To: Gary McCormick <gkmcc@sbcglobal.net>
Subject: Re: [Roadsters] --> elect. fuel pumps, elect. fans
From: RWM <RWM@RWMann.com>
Date: Fri, 02 Aug 2013 17:48:17 -0400
Cc: Larry Braddock <larrybraddock@ca.rr.com>, "datsun-roadsters@autox.team.net" <datsun-roadsters@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: datsun-roadsters@autox.team.net
Organization: R.W. Mann & Company, Inc. || Airline Industry Analysis
References: <AD90ED4755194357A4E9BA989E8C4FE2@S0027412759> <51FC1BA6.1050406@RWMann.com> <1375479839.17894.YahooMailNeo@web181403.mail.ne1.yahoo.com> autolearn=disabled version=3.0.4
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130620 Thunderbird/17.0.7
With respect, neither, IMHO.  It's a $30 fuel pump and a slick installation.

On 8/2/2013 5:43 PM, Gary McCormick wrote:
> "An electric fuel pump (used in parallel with the mechanical pump 
> which I recently rebuilt but may ultimately remove) is valuable in 
> charging the fuel lines after long sits..."
>
> If that's all you're using it for, wouldn't a couple of squirts of 
> starter fluid be easier/cheaper?
>
> Gary McCormick
> San Jose, CA
>
> ------------------------------------------------------------------------
> *From:* RWM <RWM@RWMann.com>
> *To:* Larry Braddock <larrybraddock@ca.rr.com>
> *Cc:* datsun-roadsters@autox.team.net
> *Sent:* Friday, August 2, 2013 1:50 PM
> *Subject:* Re: [Roadsters] --> elect. fuel pumps, elect. fans
>
> The electric fan benefit is primarily in limiting fan thrust/drag 
> power loss at speeds when forward motion alone provides sufficient 
> cooling air flow (no thermal clutch here), cycles to cool the engine 
> on a thermostatic basis, cycles after shut down, and I suppose 
> eliminates some water pump bearing wear associated withfan thrust 
> axial loading at all speeds.  Noise is much lower at high RPMs as well.
>
> An electric fuel pump (used in parallel with the mechanical pump which 
> I recently rebuilt but may ultimately remove) is valuable in charging 
> the fuel lines after long sits, without needing to strain the 
> electrical system and starter in order to motor the engine to do so.
>
> - Bob Mann, '68 2000 Solex, SPAL 14" puller fan, OEM mechanical and 
> P60504 3.5psi axial rotary electric fuel pumps
>
>
> On 8/2/2013 3:57 PM, Larry Braddock wrote:
> > I see a number of people posting re. electric fuel pumps and fans, 
> and as I've
> > never had a problem with mechanical ones, I've wondered what I may 
> be missing
> > as to the advantages of going electric.
> >
> > Larry
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