Re: [Amc-list] 232/258 fuel pump on ebay

[Ken Ames <ameskg@xxxxxxxxx>]

The return line is only 1/4" IIRC - not like the 5/16 or 3/8 of the incoming line.

I put a ZEMCO driving computer in the 80 X and used a single outlet filter so
the fuel flow sensor would work correctly. With the factory pump the carb
flooded. With the standard pump all is OK. 
I've not had a problem with vapour lock which is one of the things the return
line was to prevent - lotsa cool fuel until just before the carb.

Ken 


Quoting Glen Hoag <hoag@xxxxxx>:

> 
> Would that cause problems sucking fuel from the tank?  If the line 
> from the top port of the filter isn't sufficiently restrictive, you 
> could wind up pumping around the "bypass" and starving the engine of 
> fuel at speed.  I think that I would want the return line going back 
> to the tank.
> 
> PartsAmerica.com lists two pumps for a '70 Hornet.  The early style 
> with filter,  Carter M3805 (Airtex 3805 is the same pump), or the 
> late style without filter, Carter M3979/Airtex 3979.  This must have 
> been a running change.
> 
> --Glen
> 
> At 07:40 PM 10/14/2008, Tom Jennings <tomj@xxxxxxx> wrote:
> >I was unable to buy a "1970" fuel pump; 1979 was off-the-shelf.
> >
> >I wonder if you could simply install a three-legged fuel filter, and run
> >the "return" line into the line from the tank and into the pump with a
> >tee! The third leg is basically an outlet with a restriction -- it makes
> >the pump "leaky".
> >
> >The third leg/return line also bleeds pressure off the needle and seat
> >when you stop the engine -- this stops a lot of older cars flooding when
> >   parked. That's a nice thing!
> >
> >Glen Hoag wrote:
> > > There were differences, but the aftermarket seems to have
> > > standardized on one type, which is probably the high volume
> > > pump.  See the part number change in '76 for 2 bbl carbs in the AMC
> > > part number listing.  This may cause issues in applications without a
> > > return line.  I had to replace the pump in my daily driver recently;
> > > I should check the pressure on mine.  I may need to add a regulator.
> > >
> > > --Glen
> > >
> > > At 03:58 PM 10/14/2008, Ken Ames <ameskg@xxxxxxxxx> wrote:
> > >> There you go...  : )
> > >>
> > >> Shouldn't there be a difference in pumps through the 70s? I know 
> > that the pump
> > >> in my 80 AMX (high volume) would flood the carb if I didn't have the
> > >> return-to-tank line attached, but the earlier pump (regular 
> > volume) was fine.
> > >>
> > >> Ken
> > >>
> > >>
> > >> Quoting Glen Hoag <hoag@xxxxxx>:
> > >>
> > >>> At 01:09 PM 10/14/2008, you wrote:
> > >>>> It's listed only as an IHC part but should fit others as well.
> > >>>>
> > >>>> 120317992742
> > >>>>
> > >>>> is the item.
> > >>>>
> > >>>> Ken
> > >>> While it's interesting, don't bother; this pump is available new from
> > >>> Advance or CSK for around $33 in Carter brand and $35.50 in Airtex
> > >>> brand.  AutoZone stocks it in Airtex brand for $32.  The eBay seller
> > >>> wants anywhere from $10-21, depending on where you are located, 
> > to ship it.
> > >>>
> > >>> This pump fits the AMC six, but the hose fittings on it appear to be
> > >>> unique to the IH trucks.  AMC applications use a flare fitting on the
> > >>> outlet side of the pump.
> > >>>
> > >>> The correct 1970-88 AMC pump is Airtex 6737 (M6737 in Carter) and
> > >>> sells for $25.50 on partsamerica.com (Advance/CSK).
> > >>>
> > >>> Prior to 1970, a pump with integral filter was used.  It appears that
> > >>> the later style pump can be fitted to earlier engines with the
> > >>> addition of an inline fuel filter.
> > >>>
> > >>> I have AMC parts catalogs from 1973/86 that list the following six
> > >>> cylinder fuel pumps:
> > >>> 1973 3216577 (supplied with bolts) USE 3225283 (and two bolts)
> > >>> 1974 8124459 (supplied with bolts) USE 3225283 (and two bolts)
> > >>> 1974 3223045 USE 3225283
> > >>> 1975/77 (1-V) 3225283
> > >>> 1976/77 (2-V) 3228191
> > >>> 1978/83 3228191
> > >>> 1984/86 (Eagle) 3240172
> > >>>
> > >>> All of these applications cross to the Airtex 6737.
> > >>>
> > >>> --Glen
> > >>>

> > >>>
> > >>>
> > >>> _______________________________________________
> > >>> Amc-list mailing list
> > >>> Amc-list@xxxxxxxxxxxx
> > >>> http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
> > >>>
> > >>
> > >>
> > >>
> > >> _______________________________________________
> > >> Amc-list mailing list
> > >> Amc-list@xxxxxxxxxxxx
> > >> http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
> > >
> > > _______________________________________________
> > > Amc-list mailing list
> > > Amc-list@xxxxxxxxxxxx
> > > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
> >_______________________________________________
> >Amc-list mailing list
> >Amc-list@xxxxxxxxxxxx
> >http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
> 
> _______________________________________________
> Amc-list mailing list
> Amc-list@xxxxxxxxxxxx
> http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
> 


_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list