| Re: [GMCnet] Fuel filters - before of after electric pump? [message #80567] |
Wed, 14 April 2010 16:23  |
KB
Messages: 1262
Registered: September 2009
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> I have two inline (one for each tank) before the pump and the tank selector valve. If one were to plug up I simply switch tanks and continue on my way. I have never had a filter plug up.
Two pumps? Sounds like a good idea. How do you handle switching power to them?
thanks,
Karen
1973 23' Patience Tester
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Karen
1975 26'
San Jose, CA
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| Re: [GMCnet] Fuel filters - before of after electric pump? [message #80578 is a reply to message #80567] |
Wed, 14 April 2010 20:38  |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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| kdpotato wrote on Wed, 14 April 2010 14:23 |
> I have two inline (one for each tank) before the pump and the tank selector valve. If one were to plug up I simply switch tanks and continue on my way. I have never had a filter plug up.
Two pumps? Sounds like a good idea. How do you handle switching power to them?
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Aux / main switch, with a relay.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Fuel filters - before of after electric pump? [message #80584 is a reply to message #80578] |
Wed, 14 April 2010 21:11 |
Charles
Messages: 455
Registered: January 2004
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Mike,
Warren Mitchel has them wired through his tank selector switch.
Which ever switch is on then that pump is the one working.
Charles
----- Original Message -----
From: "Mike Miller" <m000035@gmail.com>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, April 14, 2010 8:38 PM
Subject: Re: [GMCnet] Fuel filters - before of after electric pump?
>
>
> kdpotato wrote on Wed, 14 April 2010 14:23
>> > I have two inline (one for each tank) before the pump and the tank
>> > selector valve. If one were to plug up I simply switch tanks and
>> > continue on my way. I have never had a filter plug up.
>>
>> Two pumps? Sounds like a good idea. How do you handle switching power
>> to them?
>
>
> Aux / main switch, with a relay.
> --
> Mike Miller
> `73 26' X Painted D.
> `78 23' Birchaven
> Hillsboro, OR
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> GMCnet mailing list
> List Information and Subscription Options:
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Charles Wersal
Duncanville, Texas
26 foot 1975 Glenbrook
Pandora's Box
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| Re: [GMCnet] Fuel filters - before of after electric pump? [message #80591 is a reply to message #80567] |
Wed, 14 April 2010 23:38 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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One pump, two tanks, two filters (one per tank) and one OEM GMC selector valve before the electric pump.
The plumbing goes main tank-> filter#1 -> selector valve-> 4070 electric pump-> mechanical pump-> Carb
and
reserve tank-> filter#2-> same selector valve-> same 4070 pump-> same mechanical pump-> same Carb.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Fuel filters - before of after electric pump? [message #80620 is a reply to message #80591] |
Thu, 15 April 2010 11:40 |
Rick Denney
Messages: 430
Registered: January 2004
Karma: 0
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| Ken Burton wrote on Thu, 15 April 2010 00:38 |
One pump, two tanks, two filters (one per tank) and one OEM GMC selector valve before the electric pump.
The plumbing goes main tank-> filter#1 -> selector valve-> 4070 electric pump-> mechanical pump-> Carb
and
reserve tank-> filter#2-> same selector valve-> same 4070 pump-> same mechanical pump-> same Carb.
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That is my arrangement, too. Two filters, one pump. Except that I don't have the mechanical pump at all. I also installed a quality sintered-bronze inline filter just upstream from the carb and replaced the filter can on the carb with an AN-6 fitting. That is a filter of last resort, catching what gets through the two filters upstream from the selector valve.
Ken Henderson used two 4070 pumps with check valves instead of a selector valve and one pump. That provides redundancy on the pumps as well as the filters.
Rick "who does carry a spare pump" Denney
'73 Glacier 230 "Jaws"
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