Proper fuel pump

[shan rose]

Dont let others work on your rig! Guy installed wrong pump, whats the proper one? Showing all kinds for 455 olds engine. Engine surges and fuel libe
freeze is an issue. Old pump worked flawlessly for over a decade on CA etholated gas! Looks like there is a bolt jammed into one of the pump ports?
Wtf
--
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA

 

[Ken H.]

Shan,

You're running a Toronado fuel pump for one with the air conditioning
option -- it has a fuel return port, which is where the bolt's been
inserted. It's a common practice, which usually only results in another
leak possibility, from all I've heard.

At one time the correct pump and the "3-line" pump had the same NAPA part
number except for the last digit, but looking at NAPAOnLine.com, I see only
one listing -- for the 3-line pump.

Apparently you'll have to shop elsewhere and check the configuration before
paying for it.

Ken H.

On Tue, Feb 16, 2021 at 11:05 AM Shan Rose via Gmclist <

> Dont let others work on your rig! Guy installed wrong pump, whats the
> proper one? Showing all kinds for 455 olds engine. Engine surges and fuel
> libe
> freeze is an issue. Old pump worked flawlessly for over a decade on CA
> etholated gas! Looks like there is a bolt jammed into one of the pump ports?
> Wtf
> --
> 73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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[LQQKatJon]

that is a common thing....

there are 2 port and 3 port fuel pumps for the 455, and usually when you go to the store, they will get out the 3 port. something to do with A/C or
not, or the years.

it has been a while, but I remember just asking for a 75 torornado pump, and if that comes out as a 3 port, then I ask for a 74,, or a 73, and
eventually they get the right 2 port pump from the back room. This method is used on a few other parts too, like power steering pumps.

the 3 port pump is also installed on purpose. many people would use that 3rd port(return line), and plumb it around and back into the fuel filler
neck. the claim is that "helps" vapor lock.

--
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/

 

[PeteSr]

So this is a timely topic for me.

I am replacing my dash AC compressor. While removing it I noticed that my fuel pump is a three port with a one inch plugged rubber tube coming off
the third port! The tube looks old, and has a bolt clamped to plug it. I can just imagine this thing leaking. The consequences of that are either a
fire or pumping all the fuel out. Either way I am not happy with this situation and intend to remedy it before driving the coach anymore.

So, does anyone know where I can find a two port pump?

If I cannot find a two port, I guess I will get a new three port and solder/TIG the third port closed.

Regards,
Pete
--
78 Eleganza II
Stock 403 w/ Carb
Single Cinnebar bags
6kW Onan

 

[PeteSr]

So, I should have looked at Applied's website before posting my question. It appears that they carry both the two port mechanical pump and an
electric conversion kit.
--
78 Eleganza II
Stock 403 w/ Carb
Single Cinnebar bags
6kW Onan

 

[john r. lebetski]

Do not use the common rubber caps with hose clamp as found in auto parts stores for return port. They are not E10 (or probably even E0) resistant and
will check and spray fuel in a short time, like a year. As they say “injury or death may result”.
--
John Lebetski
Woodstock, IL
77 Eleganza II