Home » Public Forums » GMCnet » [GMCnet] In Tank Fuel Pumps
| [GMCnet] In Tank Fuel Pumps [message #98395] |
Fri, 03 September 2010 17:04  |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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I finished the installation of the two AirTex fuel pumps yesterday. I
have only driven 60 miles so far but will be leaving Denver tomorrow
morning for Michigan and I will report my experience with them after a
couple days of driving.
I took a lot of pictures of the installation for a presentation at
GMCMI's convention at duQuoin later this month.
I believe this will eliminate any vapor lock problems on the suction
side and improve priming problems when switching from one tank to the
other.
Nice to eliminate the fuel selector valve and any rubber hoses from
above my tanks. For the fuel supply from the tanks to the TBI I have
steel lines all the way except for a 6" piece of hose at my filter. I
will replace that with steel later but I have to make some very close
bends in a 3/8" short steel line to do so.
My vent lines and my Onan pickup are also steel on top of and to the
sides of the tanks. They connect to short rubber vent elines to the
vapor / liquid separator and to the steel vent line that runs to the
fuel cap.
These are easily reached to replace the rubber if necessary.
I was able to fill my tanks with about 40 gallons last night without
it burping and coming back out the fill spout.
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| Re: [GMCnet] In Tank Fuel Pumps [message #98419 is a reply to message #98405] |
Fri, 03 September 2010 19:58  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Emery,
What if you have a carberated unit and not EFI?
Is there a llow pressure pump we can install in the tanks?
On Fri, Sep 3, 2010 at 4:08 PM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
>
> Emery, this is cool dude. I can't wait to see and hear your presentation.
> Then, I would like to do the same thing. Sounds like one of the best
> upgrades I have heard in a long time.
> Dan
> --
> Dan & Teri Gregg
>
> http://danandteri.blogspot.com/
>
>
>
>
> _______________________________________________
> GMCnet mailing list
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] In Tank Fuel Pumps [message #98422 is a reply to message #98395] |
Fri, 03 September 2010 20:28 |
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which module did you use from them? or is it a custom GMC specific unit?
| emerystora wrote on Fri, 03 September 2010 17:04 |
I finished the installation of the two AirTex fuel pumps yesterday. I
have only driven 60 miles so far but will be leaving Denver tomorrow
morning for Michigan and I will report my experience with them after a
couple days of driving.
I took a lot of pictures of the installation for a presentation at
GMCMI's convention at duQuoin later this month.
I believe this will eliminate any vapor lock problems on the suction
side and improve priming problems when switching from one tank to the
other.
Nice to eliminate the fuel selector valve and any rubber hoses from
above my tanks. For the fuel supply from the tanks to the TBI I have
steel lines all the way except for a 6" piece of hose at my filter. I
will replace that with steel later but I have to make some very close
bends in a 3/8" short steel line to do so.
My vent lines and my Onan pickup are also steel on top of and to the
sides of the tanks. They connect to short rubber vent elines to the
vapor / liquid separator and to the steel vent line that runs to the
fuel cap.
These are easily reached to replace the rubber if necessary.
I was able to fill my tanks with about 40 gallons last night without
it burping and coming back out the fill spout.
_______________________________________________
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List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: [GMCnet] In Tank Fuel Pumps [message #98425 is a reply to message #98395] |
Fri, 03 September 2010 20:34 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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Emery,
Where you are headed in MI? If it's near Detroit, it would be great to meet up with you. And, if it your MI trip includes Sunday the 12th, you can join a bunch of us at the Golden Corral in Westland for lunch.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] In Tank Fuel Pumps [message #98438 is a reply to message #98419] |
Fri, 03 September 2010 21:57 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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I will cover that in the seminar and will make the presentation
available to GMCnetters when I have finished writing it for the
convention.
Quick reply for you though -- I don't know of any low pressure pumps
that go into tanks. I believe in-tank pumps were only used with fuel
injected vehicles.
The higher pressure would seem to
prevent vapor lock by pressurizing the fuel and for carbs there are
pressure regulators that could be used to drop the pressure down to
the 5 to 7 lbs you would need for a carb placed just before the carb
Emery Stora
On Sep 3, 2010, at 6:58 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Emery,
> What if you have a carberated unit and not EFI?
> Is there a llow pressure pump we can install in the tanks?
>
> On Fri, Sep 3, 2010 at 4:08 PM, Dan Gregg <gregg_dan@hotmail.com>
> wrote:
>
>>
>>
>> Emery, this is cool dude. I can't wait to see and hear your
>> presentation.
>> Then, I would like to do the same thing. Sounds like one of the best
>> upgrades I have heard in a long time.
>> Dan
>> --
>> Dan & Teri Gregg
>>
>> http://danandteri.blogspot.com/
>>
>>
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] In Tank Fuel Pumps [message #98457 is a reply to message #98395] |
Fri, 03 September 2010 23:58 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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Emery/Dan,
I'm embarrassed to admit, but long ago, I owned several Chevy Vegas that had carburetors, and also in-tank electric fuel pumps, not sure what the pressure rating of the pump was, but they didn't have a pressure regulator. Thankfully, most of them got the aluminum Buick V8 treatment, making them somewhat more tolerable till they rusted into nothingness . . .
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] In Tank Fuel Pumps [message #98459 is a reply to message #98454] |
Sat, 04 September 2010 00:16 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Emery, I have a feeling that you should have a lot of interest in your
seminar. A number of foreign cars have in tank pumps, VW Rabbit and Saab 99
come readily to mind. They are about as reliable as an anvil except when you
run them out of fuel. Thanks for the rapid response. I hope you post some
pix on the photo site when you have time.
Jim Hupy
Salem, Or
78 Royale 403
On Fri, Sep 3, 2010 at 9:08 PM, Emery Stora <emerystora@mac.com> wrote:
>
> On Sep 3, 2010, at 9:41 PM, Dan Gregg wrote:
>
> >
> >
> > This is going to be good. Should one fail, just flip to the other one
> until you can drop the tanks to replace. As soon as I leave the presentation
> I plan to start looking for the recommended pumps.
> > Dan
> > --
> > Dan & Teri Gregg
> >
> > http://danandteri.blogspot.com/
>
>
> Dan - not only that but you can pull fuel through the pumps so if one
> failed you could temporarily put on an external pump on the line from that
> tank to pull fuel from the tank with the defective pump. Since these are
> pumps that GM used on many trucks they should prove to be very reliable.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>
> _______________________________________________
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| Re: [GMCnet] In Tank Fuel Pumps [message #98463 is a reply to message #98438] |
Sat, 04 September 2010 04:57 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| emerystora wrote on Fri, 03 September 2010 21:57 |
I will cover that in the seminar and will make the presentation
available to GMCnetters when I have finished writing it for the
convention.
Quick reply for you though -- I don't know of any low pressure pumps
that go into tanks. I believe in-tank pumps were only used with fuel
injected vehicles.
The higher pressure would seem to
prevent vapor lock by pressurizing the fuel and for carbs there are
pressure regulators that could be used to drop the pressure down to
the 5 to 7 lbs you would need for a carb placed just before the carb
Emery Stora
On Sep 3, 2010, at 6:58 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Emery,
> What if you have a carberated unit and not EFI?
> Is there a llow pressure pump we can install in the tanks?
>
> On Fri, Sep 3, 2010 at 4:08 PM, Dan Gregg <gregg_dan@hotmail.com>
> wrote:
|
Throttle body in tank fuel pumps for Blazers ran around 12 PSI.
I like the idea of just installing a bypass 6 PSI regulator and returning the excess fuel back to the tank.
This sure sounds like it might solve the vapor lock problem you guys are seeing out west. I also like the dual pump idea.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] In Tank Fuel Pumps [message #98487 is a reply to message #98438] |
Sat, 04 September 2010 08:57 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""I will cover that in the seminar and will make the presentation
available to GMCnetters when I have finished writing it for the
convention.
""
See what you have started? By the time you get to the rally, everyone will have squeezed all the details out of you 
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] In Tank Fuel Pumps [message #98514 is a reply to message #98487] |
Sat, 04 September 2010 11:59 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Emery, I was only trying to create some interest in your seminar. I think
it's like an old Waylon Jennings song "I think this outlaw business done got
out of hand". By the way, Shooter Jennings either presently has or had a
GMC. I think your fuel system upgrades have the potential to resolve many of
the alcohol fuel issues the GMC is faced with, and jerk many of us into the
21st Century, albeit kicking and screaming.
Jim Hupy
Salem, Or
78 Royale 403 I can't attend but would like to. Too much distance and Wife
still in intensive care at OSHU since july 6th.
On Sat, Sep 4, 2010 at 6:57 AM, Bob de Kruyff <NEXT2POOL@aol.com> wrote:
>
>
> ""I will cover that in the seminar and will make the presentation
> available to GMCnetters when I have finished writing it for the
> convention.
> ""
>
> See what you have started? By the time you get to the rally, everyone will
> have squeezed all the details out of you :)
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
> _______________________________________________
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| Re: [GMCnet] In Tank Fuel Pumps [message #98793 is a reply to message #98425] |
Mon, 06 September 2010 20:34 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Hi Craig
Thanks for the invitation. I am in Michigan now but am at Gun Lake which is on the west side of the state about half way between Grand Rapids and Kalamazoo.
Hopefully we can meet some other time. Are you going to the GMCMI at DuQuoin, IL?
Emery Stora
On Sep 3, 2010, at 7:34 PM, Craig Lechowicz wrote:
>
>
> Emery,
> Where you are headed in MI? If it's near Detroit, it would be great to meet up with you. And, if it your MI trip includes Sunday the 12th, you can join a bunch of us at the Golden Corral in Westland for lunch.
> --
> Craig Lechowicz
> '77 Kingsley, Waterford, MI
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] In Tank Fuel Pumps [message #98794 is a reply to message #98793] |
Mon, 06 September 2010 20:47 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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I want to see how you ran the steel lines.
I just did this and was happy to get them to the sides of the tank, then I had to use rubber lines to connect to the steel lines that ran along the frame rail.
More rubber than I wanted, but much better than the flaking fire hazard that was there
I am on pins and needles in anticipation of how you can drop the tanks with all steel lines!
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] In Tank Fuel Pumps [message #98795 is a reply to message #98793] |
Mon, 06 September 2010 20:47 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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Emery,
Well, have a fun trip on the west side of the state. Unfortunately DuQuoin isn't going to work out for me this year, much as I would like to be there. I think next fall's event is in Elkhart, and no matter what happens over the next year, I should be able to make at least part if not all of that one.
Take care,
Craig
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: [GMCnet] In Tank Fuel Pumps [message #98798 is a reply to message #98395] |
Mon, 06 September 2010 21:19 |
Jim Wagner
Messages: 339
Registered: February 2004
Location: Brook Park, Oh
Karma: 0
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Senior Member |
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Craig, Don't be embarrassed, I still have a Vega.:>) The most pressure I saw from that pump was 3psi at an idle. Would't try it on a GMC
Jim Wagner
Brook Park
Emery/Dan,
I'm embarrassed to admit, but long ago, I owned several Chevy Vegas that had carburetors, and also in-tank electric fuel pumps, not sure what the pressure rating of the pump was, but they didn't have a pressure regulator. Thankfully, most of them got the aluminum Buick V8 treatment, making them somewhat more tolerable till they rusted into nothingness . . .
--------------------------------------------------------------------------------
Craig Lechowicz
'77 Kingsley, Waterford, MI
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