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Re: [GMCnet] Fuel Pump Poll [message #239222 is a reply to message #239193]

Sat, 08 February 2014 17:53

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

Ken,

Good point, I bought a mechanical fuel pump like the one below off eBay that can be disassembled.

http://tinyurl.com/q4u99hd

Mine IS compatible with the 455 / Toronado.

I want to see if / how the diaphragms are sealed off from the pumping lever and if they are not determine if it would be possible to
do so.

I'm thinking it might be possible to "semi seal" the lever from the crankcase and install an overboard vent that would dump the gas
on the ground rather than in the crankcase.

Probably a pipe dream! ;-)

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426

-----Original Message-----
From: Ken Burton

jimk wrote on Sat, 08 February 2014 10:03
> If your mechanical pump is over 4 years old, best to replace as the
> ethanol is deteriating the diaphragm and you'll have fuel in the crank case.

Where did that idea come from? We have been under an EPA 10% ethanol mandate here since 1995. That is 19 years. I have never
replaced a fuel pump of any kind for a leaking diaphragm and I know of no one else who has. We have diaphragm type pumps in all
kinds of things from chain saws, to lawn mowers, to GMCs, to airplanes, and I have never replaced one. The last diaphragm pump I
replaced was in 1961 on a 1954 Ford. In those days people could not even spell ethanol.

While I hate ethanol in gasoline, promoting an urban legend does not help it go away. I have replaced a couple of in tank rotary
electric pumps for bad bearings.
--
Ken

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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[Message index]

		Fuel Pump Poll By: jturbo on Wed, 04 September 2013 03:44
		Re: Fuel Pimp Poll By: kerry pinkerton on Wed, 04 September 2013 06:03
		Re: [GMCnet] Fuel Pimp Poll By: mtnman111 on Wed, 04 September 2013 17:07
		Re: Fuel Pimp Poll By: rvanwin on Wed, 04 September 2013 06:54
		Re: Fuel Pimp Poll By: RF_Burns on Wed, 04 September 2013 07:11
		Re: Fuel Pimp Poll By: George Beckman on Wed, 04 September 2013 07:25
		Re: Fuel Pimp Poll By: jturbo on Wed, 04 September 2013 11:45
		Re: Fuel Pimp Poll By: habbyguy on Wed, 04 September 2013 09:54
		Re: Fuel Pimp Poll By: bwevers on Wed, 04 September 2013 10:13
		Re: Fuel Pump Poll By: bobby5832708 on Wed, 04 September 2013 17:43
		Re: Fuel Pump Poll By: mikethebike on Fri, 07 February 2014 15:23
		Re: Fuel Pump Poll By: corleyw on Fri, 07 February 2014 18:47
		Re: Fuel Pump Poll By: Bob de Kruyff on Fri, 07 February 2014 18:49
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Fri, 07 February 2014 21:36
		Re: [GMCnet] Fuel Pump Poll By: Bob de Kruyff on Fri, 07 February 2014 21:54
		Re: Fuel Pump Poll By: Ken Burton on Sat, 08 February 2014 01:22
		Re: Fuel Pump Poll By: Bob de Kruyff on Sat, 08 February 2014 09:35
		Re: [GMCnet] Fuel Pump Poll By: jimk on Sat, 08 February 2014 10:03
		Re: [GMCnet] Fuel Pump Poll By: Bob de Kruyff on Sat, 08 February 2014 10:59
		Re: [GMCnet] Fuel Pump Poll By: Ken Burton on Sat, 08 February 2014 11:19
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Sat, 08 February 2014 17:53
		Re: [GMCnet] Fuel Pump Poll By: Ken Burton on Sun, 09 February 2014 23:58
		Re: Fuel Pump Poll By: pyolet on Fri, 07 February 2014 21:26
		Re: Fuel Pump Poll By: mikethebike on Sat, 08 February 2014 18:42
		Re: Fuel Pump Poll By: kerry pinkerton on Sat, 08 February 2014 18:26
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Sat, 08 February 2014 18:52
		Re: [GMCnet] Fuel Pump Poll By: Ken Henderson on Sun, 09 February 2014 20:51
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Sun, 09 February 2014 22:19
		Re: [GMCnet] Fuel Pump Poll By: Ken Henderson on Sun, 09 February 2014 22:43
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Sun, 09 February 2014 23:22
		Re: [GMCnet] Fuel Pump Poll By: Ken Henderson on Mon, 10 February 2014 07:00
		Re: [GMCnet] Fuel Pump Poll By: USAussie on Mon, 10 February 2014 07:18
		Re: [GMCnet] Fuel Pump Poll By: jhbridges on Mon, 10 February 2014 13:16
		Re: [GMCnet] Fuel Pump Poll By: James Hupy on Mon, 10 February 2014 13:44
		Re: [GMCnet] Fuel Pump Poll By: jhbridges on Mon, 10 February 2014 17:56
		Re: [GMCnet] Fuel Pump Poll By: Ken Burton on Mon, 10 February 2014 20:36
		Re: [GMCnet] Fuel Pump Poll By: dwayne jacobson[1] on Tue, 11 February 2014 13:12
		Re: [GMCnet] Fuel Pump Poll By: Bob de Kruyff on Mon, 10 February 2014 20:21

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