Carb fuel filterst

jim kanomata1

New member
Dec 31, 2006
9,932
3
0
The most important thing is to have them with you and have a line wrench to
undo the fitting without rounding the fitting

> 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
>

> >
> > 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
>
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>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
AND be careful not to cross thread the fitting when you screw it back into the carb!

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] On Behalf Of Jim Kanomata
Sent: Saturday, December 16, 2017 4:11 AM
To: gmclist
Subject: Re: [GMCnet] Carb fuel filterst

The most important thing is to have them with you and have a line wrench to
undo the fitting without rounding the fitting

Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
 
If the line does not easily start threading, I remove the 4 carb mounting bolts. (I believe they are 1/2") It takes about 30 seconds. Then the
carb can move around a bit with everything else still still connected and allow easy starting of the threads.

DO NOT OVER TIGHTEN THE CARB MOUNTING BOLTS when reinstalling or you will warp and destroy the carb.

Ken B.

> AND be careful not to cross thread the fitting when you screw it back into the carb!
>
> 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] On Behalf Of Jim Kanomata
> Sent: Saturday, December 16, 2017 4:11 AM
> To: gmclist
> Subject: Re: [GMCnet] Carb fuel filterst
>
> The most important thing is to have them with you and have a line wrench to
> undo the fitting without rounding the fitting
>
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk
> http://www.appliedgmc.com
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
The spec is 12 ft lb.

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] On Behalf Of Ken Burton
Sent: Saturday, December 16, 2017 7:35 AM
To: gmclist
Subject: Re: [GMCnet] Carb fuel filterst

If the line does not easily start threading, I remove the 4 carb mounting bolts. (I believe they are 1/2") It takes about 30
seconds. Then the
carb can move around a bit with everything else still still connected and allow easy starting of the threads.

DO NOT OVER TIGHTEN THE CARB MOUNTING BOLTS when reinstalling or you will warp and destroy the carb.

Ken B.
 
Thanks, I was thinking it was 10 ft-pd but I did not know for sure, so I stated nothing in the posting.

12 it is!

Ken B.

> The spec is 12 ft lb.
>
> 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] On Behalf Of Ken Burton
> Sent: Saturday, December 16, 2017 7:35 AM
> To: gmclist
> Subject: Re: [GMCnet] Carb fuel filterst
>
> If the line does not easily start threading, I remove the 4 carb mounting bolts. (I believe they are 1/2") It takes about 30
> seconds. Then the
> carb can move around a bit with everything else still still connected and allow easy starting of the threads.
>
> DO NOT OVER TIGHTEN THE CARB MOUNTING BOLTS when reinstalling or you will warp and destroy the carb.
>
> Ken B.
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana