| fuel pump [message #93467] |
Tue, 27 July 2010 12:03  |
2-4 the road
Messages: 145
Registered: June 2009
Location: Fulltimers
Karma: 0
|
Senior Member |
|
|
Is there an electric fuel pump preferred to run this
455 with HEI, without a mechanical fuel pump? Having problems with vapor lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
2-4 the road
77 Kingsley 455
|
|
|
|
| Re: fuel pump [message #93472 is a reply to message #93467] |
Tue, 27 July 2010 12:31  |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
|
Senior Member |
|
|
| 2-4 the road wrote on Tue, 27 July 2010 13:03 |
Is there an electric fuel pump preferred to run this
455 with HEI, without a mechanical fuel pump? Having problems with vapor lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
|
Sir: Long story.. short version.. Maybe try blowing shop air back thru the tanks (with the fuel cap off) to clear the sock filters or even blow them off if you are lucky. Add an inline clear filter in front of the selector valve and replace the filter in carb. Check your lines for any kinks or twists. It really helped me.
C. Boyd
76 Crestmont
East Tennessee
|
|
|
|
| Re: [GMCnet] fuel pump [message #93522 is a reply to message #93472] |
Tue, 27 July 2010 16:06 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
JoAnne,
What Chuck's telling you is that your Mr. Gasket pump may well be adequate
but is being starved by clogged filter socks in the tanks.
If, after following his suggestions to be sure there's adequate supply to
the pump, you still want to replace it, my preference is for the Carter
4070. They've served me well for the past 12 years.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com
On Tue, Jul 27, 2010 at 1:31 PM, Charles Boyd <covered-wagon@comcast.net>wrote:
>
>
> 2-4 the road wrote on Tue, 27 July 2010 13:03
> > Is there an electric fuel pump preferred to run this
> > 455 with HEI, without a mechanical fuel pump? Having problems with vapor
> lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
>
>
> Sir: Long story.. short version.. Maybe try blowing shop air back thru the
> tanks (with the fuel cap off) to clear the sock filters or even blow them
> off if you are lucky. Add an inline clear filter in front of the selector
> valve and replace the filter in carb. Check your lines for any kinks or
> twists. It really helped me.
>
>
> --
> C. Boyd
> 76 Crestmont by Midas
> East Tennessee
>
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: fuel pump [message #93539 is a reply to message #93467] |
Tue, 27 July 2010 17:46 |
fred v
Messages: 999
Registered: April 2006
Location: pensacola, fl.
Karma: 0
|
Senior Member |
|
|
| 2-4 the road wrote on Tue, 27 July 2010 12:03 |
Is there an electric fuel pump preferred to run this
455 with HEI, without a mechanical fuel pump? Having problems with vapor lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
|
my coach came with an off brand elec. pump. it quit working and i took it apart. inside i found all the rubber seals and diaphragm were turned into bubble gum. the diaphragm was missing all together. i suspect ethanol gas ate them. i replaced it with the 4070 Carter. i hope it won't do the same thing.
Fred V
'77 Royale RB 455
P'cola, Fl
|
|
|
|
|
|
| Re: [GMCnet] fuel pump [message #93576 is a reply to message #93522] |
Tue, 27 July 2010 21:16 |
shawnee
Messages: 422
Registered: February 2004
Location: NC
Karma: 0
|
Senior Member |
|
|
| Ken Henderson wrote on Tue, 27 July 2010 17:06 |
JoAnne,
What Chuck's telling you is that your Mr. Gasket pump may well be adequate
but is being starved by clogged filter socks in the tanks.
If, after following his suggestions to be sure there's adequate supply to
the pump, you still want to replace it, my preference is for the Carter
4070. They've served me well for the past 12 years.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com
I think I remember that the magic number for fuel pump capacity for the 455 is 90 gallons per hour. the cheap electric ones are much less than that and can't deliver enough gasoline when you are giving a lot of gas pedal or on a steep climb.
On Tue, Jul 27, 2010 at 1:31 PM, Charles Boyd <covered-wagon@comcast.net>wrote:
>
>
> 2-4 the road wrote on Tue, 27 July 2010 13:03
> > Is there an electric fuel pump preferred to run this
> > 455 with HEI, without a mechanical fuel pump? Having problems with vapor
> lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
>
>
> Sir: Long story.. short version.. Maybe try blowing shop air back thru the
> tanks (with the fuel cap off) to clear the sock filters or even blow them
> off if you are lucky. Add an inline clear filter in front of the selector
> valve and replace the filter in carb. Check your lines for any kinks or
> twists. It really helped me.
>
>
> --
> C. Boyd
> 76 Crestmont by Midas
> East Tennessee
>
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
Gene Dotson
74 Canyonlands
www.bdub.net/Motorhome_Enhancements New Windows and Aluminum Radiators
|
|
|
|
| Re: fuel pump [message #93578 is a reply to message #93467] |
Tue, 27 July 2010 21:31 |
2-4 the road
Messages: 145
Registered: June 2009
Location: Fulltimers
Karma: 0
|
Senior Member |
|
|
Thanks everyone, a Carter 4070 it is. Hopefully we will get it in this week.
2-4 the road
77 Kingsley 455
|
|
|
|
| Re: fuel pump [message #93586 is a reply to message #93578] |
Wed, 28 July 2010 00:55 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
|
|
| 2-4 the road wrote on Tue, 27 July 2010 21:31 |
Thanks everyone, a Carter 4070 it is. Hopefully we will get it in this week.
|
I think he actual number is P4070
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
| Re: [GMCnet] fuel pump [message #93654 is a reply to message #93576] |
Wed, 28 July 2010 11:46 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
|
Senior Member |
|
|
[quote title=shawnee wrote on Tue, 27 July 2010 22:16]| Ken Henderson wrote on Tue, 27 July 2010 17:06 |
JoAnne,
What Chuck's telling you is that your Mr. Gasket pump may well be adequate
but is being starved by clogged filter socks in the tanks.
If, after following his suggestions to be sure there's adequate supply to
the pump, you still want to replace it, my preference is for the Carter
4070. They've served me well for the past 12 years.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com
I think I remember that the magic number for fuel pump capacity for the 455 is 90 gallons per hour. the cheap electric ones are much less than that and can't deliver enough gasoline when you are giving a lot of gas pedal or on a steep climb.
|
Thanks Gene.. Thats the # I was looking for. As the stock mech pump delivers 40 gph I was going to use the Mr Gasket pump rated at 80gph. I have found a carter mech pump #CRT-M6108 rated for 120 gph at 5.5 - 6.5 psi without the vapor return. I`ll let you know how it works out.
C. Boyd
76 Crestmont
East Tennessee
|
|
|
|
| Re: [GMCnet] fuel pump [message #93683 is a reply to message #93576] |
Wed, 28 July 2010 16:10 |
jw mills
Messages: 199
Registered: September 2006
Karma: -30
|
Senior Member |
|
|
According to my Sun Tuneup sheet for 1973 Oldsmobile (all models except
Omega) 455 c.i. W/ 4-BBL carb
the Fuel pump is:
Pressure - 5.5 - 6.5 psi
volume @ Cranking Speed - 1 pint in 20 seconds
I can't find a spec for cranking speed on this sheet.
JEG's says that the Carter P4070 is 4-6psi and 72 gph FREE FLOW
--
Jim Mills
Greeley, CO
1973 CanyonLands 260 TZE-063V100731(under renovation)
1973 Glacier 230 TZE-033V101993
On Tue, 2010-07-27 at 21:16 -0500, Gene Dotson wrote:
>
> Ken Henderson wrote on Tue, 27 July 2010 17:06
> > JoAnne,
> >
> > What Chuck's telling you is that your Mr. Gasket pump may well be adequate
> > but is being starved by clogged filter socks in the tanks.
> >
> > If, after following his suggestions to be sure there's adequate supply to
> > the pump, you still want to replace it, my preference is for the Carter
> > 4070. They've served me well for the past 12 years.
> >
> > Ken H.
> > Americus, GA
> > '76 X-Birchaven w/Cad500/Howell EFI+ & EBL
> > www.gmcwipersetc.com
> >
> > I think I remember that the magic number for fuel pump capacity for the 455 is 90 gallons per hour. the cheap electric ones are much less than that and can't deliver enough gasoline when you are giving a lot of gas pedal or on a steep climb.
> >
> > On Tue, Jul 27, 2010 at 1:31 PM, Charles Boyd <covered-wagon@comcast.net>wrote:
> >
> > >
> > >
> > > 2-4 the road wrote on Tue, 27 July 2010 13:03
> > > > Is there an electric fuel pump preferred to run this
> > > > 455 with HEI, without a mechanical fuel pump? Having problems with vapor
> > > lock/ sputtering with the Mr. Gasket fuel pump currently pumping.
> > >
> > >
> > > Sir: Long story.. short version.. Maybe try blowing shop air back thru the
> > > tanks (with the fuel cap off) to clear the sock filters or even blow them
> > > off if you are lucky. Add an inline clear filter in front of the selector
> > > valve and replace the filter in carb. Check your lines for any kinks or
> > > twists. It really helped me.
> > >
> > >
> > > --
> > > C. Boyd
> > > 76 Crestmont by Midas
> > > East Tennessee
> > >
> > >
> > _______________________________________________
> > 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
|
|
|
|
| Re: [GMCnet] fuel pump [message #93685 is a reply to message #93654] |
Wed, 28 July 2010 16:33 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
|
Senior Member |
|
|
Thanks Gene.. Thats the # I was looking for. As the stock mech pump delivers 40 gph I was going to use the Mr Gasket pump rated at 80gph. I have found a carter mech pump #CRT-M6108 rated for 120 gph at 5.5 - 6.5 psi without the vapor return. I`ll let you know how it works out.[/quote]
Well: acording to Carter the CRT-M6108 at Summit on line is rated for 25 gph NOT 120 gph. So no go there... Holly 12-836 is rated for 80 gph as is the Mr Gasket. Also the Summit 250009-1 @ 110 gph is not available for the Olds as advertised on line only 80 gph. It is stamped "USA" but according to Summit tech line it is made in China. Looks like it as there is casting holes in the inlet and outlet threads. As usual I have spent all day achieving nothing. So never mind. But I`ll be back.....
C. Boyd
76 Crestmont
East Tennessee
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
