GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » Carb fuel filters
Re: [GMCnet] Carb fuel filters [message #327163 is a reply to message #327141] Fri, 15 December 2017 23:33 Go to previous messageGo to previous message
powwerjon is currently offline  powwerjon   United States
Messages: 849
Registered: March 2013
Karma:
Senior Member
Rob,
I removed the internal filter out of my original carb on the 77 403 just
after I got it in 1998. I ran a 2 filter system and did convert to an
electric fuel system with a electric fuel pump just after the selector
valve. I ran a filter in the same spot that Ken F put his and one between
the selector and the pump. When I changed the filters, I put a new filter
at the carb end and move the one there to the spot before the fuel pump.

http://www.gmcmhphotos.com/photos/g3657-electric-fuel-pump-26amp-3b-filter.html

John

J.R. Wright
GMC Great Laker
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 30' Stretch
75 Avion (Under going Frame up Restoration)


On Fri, Dec 15, 2017 at 1:00 PM, Rob Mueller
wrote:

> JR,
>
> Good photos! This filter installs "backwards." When I say that filter are
> "supposed" to flow from the larger surface area "outside"
> to the smaller surface area "inside." This filter is installed
> "backwards;" the flow enters on the "inside" and flows to the
> "outside." It doesn't take a lot to plug it up!
>
> That's why Ken Frey's idea of installing a filter in the rubber line that
> connects the metal line welded to the front crossmember
> and the inlet to the mechanical fuel pump:
>
> http://www.gmcmhphotos.com/photos/aa-miscellaneous-
> photos/p54750-fuel-pump-inlet-filter.html
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of John
> Wright
> Sent: Saturday, December 16, 2017 3:38 AM
> To: gmclist@list.gmcnet.org
> Subject: Re: [GMCnet] Carb fuel filters
>
> Here are some good pictures of the fuel filter and how it is installed.
> You can put them in backwards, ask me how I know!
>
> http://www.gmcmhphotos.com/photos/general-pictures/p58270-img-07751.html
> http://www.gmcmhphotos.com/photos/general-pictures/p58271-img-07761.html
> http://www.gmcmhphotos.com/photos/general-pictures/
> p58269-fuel-system-q-jet.html
> http://www.gmcmhphotos.com/photos/general-pictures/
> p58268-q-jet-fuel-filter.html
>
> J.R. Wright
> GMC GreatLaker 18 Year Member
> GMCGL Tech Editor
> GMC Eastern States Charter Member
> GMCMI 18 Year Member
> 78 Buskirk 30' Stretch
> 1975 Avion (Under Reconstruction)
> Michigan
>
>> On Dec 14, 2017, at 10:19 PM, Ken Burton wrote:
>>
>> A note on the fuel filter inside the 455 or 403 carb.
>>
>> It turns out that there are 2 different filter listed both by Ac Delco
> and Wix. In 1976 GM changed ALL filters of this type in
> all vehicles using
>> that filter. The change was adding a little rubber flapper check valve
> on the entrance side of the filter.
>>
>> Either filter will fit in all years of our 455 and 403 engines with
> Quadrajet carbs.
>>
>> AC Delco GF441 or Wix 33148 is the one without the check valve. (pre
> 1976)
>> AC Delco GF471 or Wix 33152 is the later version with the internal check
> valve and cost $1.80 more. (listed as 1976 and later)
>
>>
>> I did not check out other brands and I also have no recommendation on
> which version to use.
>> --
>> Ken Burton - N9KB
>> 76 Palm Beach
>> Hebron, Indiana
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Generator compartment door
Next Topic: Re: [GMCnet] The impact of extra weight on GMC handling
Goto Forum:
  


Current Time: Fri May 10 10:36:35 CDT 2024

Total time taken to generate the page: 0.02271 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software