[DeTomaso] fuel pumps
Garth Rodericks
garth_rodericks at yahoo.com
Tue Nov 18 23:25:55 EST 2014
I didn't use an adapter to the tank drain either. The 1/2" SAE Groco fuel valve threaded right into the metric bung on the bottom of the tank. I did have a fuel drip at first, but the added fuel safe joint compound to the threads on the valve, as well as an O-ring from O'Reilly Auto Parts and everything is sealed up tight. And it sure came in handy to just close the fuel valve when I replaced my fuel pump with the RobbMC pump a few months ago - no mess, no need to drain the tank, no clamping the fuel line to stop flow to the pump, etc. Just turn the valve a quarter turn. Also a great theft deterrent. I just reach under there and give the valve a quarter turn when not using the car (or when staying at a hotel such as when I took it to the Ironstone Concours in September) and if someone tries to steal it, they won't get far.
From: Will Kooiman <will.kooiman at gmail.com>
To: Garth Rodericks <garth_rodericks at yahoo.com>; Larry - Ohio Time <Larry at ohiotimecorp.com>; "adin at frontier.net" <adin at frontier.net>
Cc: "detomaso at poca.com" <detomaso at poca.com>
Sent: Tuesday, November 18, 2014 4:16 PM
Subject: Re: [DeTomaso] fuel pumps
I did an AN 90-degree on the bottom of the tank to -8, to a mongo filter,
to an electric pump.
I know, you¹re not supposed to run a filter before the pump. Sue me. I
will clean it annually, and it¹s a really big filter.
I had a RobbM mechanical, but I recently switched to Webers, which like
4-6psi. I was going to run the Robb pump with a regulator to step it down
to ~5psi, but all that crap on the front of the engine looked too red neck.
At any rate, -8 is a nice size from the bottom of the tank to the fuel
pump, and it doesn¹t hang lower than the body/frame, so I¹m not worried
about it hitting anything.
Another note is that the plug has metric threads that are very close to AN
threads. If you use the proper sized AN elbow, you don¹t need an adapter.
If I had the tank out, I might try a submersible electric pump. But
as-is, I am very happy with my results.
On 11/18/14, 5:35 PM, "Garth Rodericks via DeTomaso" <detomaso at poca.com>
wrote:
> If I recall correctly, the welded bung in the bottom of the tank
> already extends at least 1/4" up into the tank. I'm not too concerned
> with crap from the bottom of the tank. My tank was spotless inside
> before reinstalling the engine and I added a serviceable pre-filter
> between the tank and the pump and the obligatory fuel filter between
> the pump and carb as well. The only way crap will get into the tank is
> if it comes from the gas pump at a station, and I'd rather the crap
> gets removed from the bottom of my tank and trapped by the filter than
> left to collect and build up to the point of causing recurring
> problems.
> My 2-cents. YMMV.
> __________________________________________________________________
>
> From: Larry - Ohio Time <Larry at ohiotimecorp.com>
> To: 'Garth Rodericks' <garth_rodericks at yahoo.com>; adin at frontier.net
> Cc: detomaso at poca.com
> Sent: Tuesday, November 18, 2014 12:56 PM
> Subject: RE: [DeTomaso] fuel pumps
> The only thing I mite add is to weld a small nipple (1\2" long) onto
> the end
> of the valve going into the tank so that you are not taking the fuel
> and
> crap off the bottom of the tank into the line.
> Larry (too much old crap) - Cleveland
> -----Original Message-----
> From: DeTomaso [mailto:[1]detomaso-bounces at poca.com] On Behalf Of Garth
> Rodericks via DeTomaso
> Sent: Tuesday, November 18, 2014 3:40 PM
> To: DeTomaso Mail List; [2]adin at frontier.net
> Subject: Re: [DeTomaso] fuel pumps
> One more comment...
> Note that this 90-degree valve is only 2.75" top to bottom, which means
> the
> installed height is less since it threads into the drain plug bung in
> the
> bottom of the
> tank.http://images.jamestowndistributors.com/woeimages/hardware/large/5
> 6744-
> 1.jpg
> Therefore, there are no valves, hoses or fittings to dangle below the
> Pantera's chassis or frame rails to risk being broken off by speed
> bumps or
> stray road debris.
> From: Garth Rodericks <[3]garth_rodericks at yahoo.com>
> To: DeTomaso Mail List <[4]detomaso at poca.com>; "[5]adin at frontier.net"
> <[6]adin at frontier.net>
> Sent: Tuesday, November 18, 2014 12:35 PM
> Subject: fuel pumps
>
> <<< Also, it seems any pump sucking through a tiny inlet will never be
> happy. Anyone done a -8 upgrade from the tank to the pump? >>>
> Not a -8, but I plumbed mine with 3/8" (-6).
> I went with the RobbMC pump and pre-filter on my 383 stroker Cleveland
> when
> the Holley mechanical pump began leaking.I plumbed it from the bottom
> of the
> tank with a 1/2" 90-degree stainless marine fuel valve from Groco.
> [7]http://www.jamestowndistributors.com/userportal/show_product.do?pid=
> 56744
> and 3/8" steel fuel line from the pump to the top of the engine where
> it
> goes through a fuel filter right before the carb inlet.
> The biggest issue, regardless of where you plumb your fuel line from is
> the
> restriction in the banjo fitting or elbow. The stock banjo fitting on
> the
> top of the tank forces all the fuel through a small orifice that's
> about
> 1/8" in diameter. And many 90-degree fittings significantly restrict
> fuel
> flow as well. I went with the 1/2" Groco Marine fitting so it wouldn't
> become the bottleneck that starves my engine for fuel.
> Cheers!Garth#4033
>
>References
>
> 1. mailto:detomaso-bounces at poca.com
> 2. mailto:adin at frontier.net
> 3. mailto:garth_rodericks at yahoo.com
> 4. mailto:detomaso at poca.com
> 5. mailto:adin at frontier.net
> 6. mailto:adin at frontier.net
> 7.
>http://www.jamestowndistributors.com/userportal/show_product.do?pid=56744
>_______________________________________________
>
>Detomaso Forum Managed by POCA
>
>DeTomaso mailing list
>DeTomaso at poca.com
>http://poca.com/mailman/listinfo/detomaso_poca.com
-------------- next part --------------
I didn't use an adapter to the tank drain either. The 1/2" SAE Groco
fuel valve threaded right into the metric bung on the bottom of the
tank. I did have a fuel drip at first, but the added fuel safe joint
compound to the threads on the valve, as well as an O-ring from
O'Reilly Auto Parts and everything is sealed up tight. And it sure
came in handy to just close the fuel valve when I replaced my fuel pump
with the RobbMC pump a few months ago - no mess, no need to drain the
tank, no clamping the fuel line to stop flow to the pump, etc. Just
turn the valve a quarter turn. Also a great theft deterrent. I just
reach under there and give the valve a quarter turn when not using the
car (or when staying at a hotel such as when I took it to the Ironstone
Concours in September) and if someone tries to steal it, they won't get
far.
__________________________________________________________________
From: Will Kooiman <will.kooiman at gmail.com>
To: Garth Rodericks <garth_rodericks at yahoo.com>; Larry - Ohio Time
<Larry at ohiotimecorp.com>; "adin at frontier.net" <adin at frontier.net>
Cc: "detomaso at poca.com" <detomaso at poca.com>
Sent: Tuesday, November 18, 2014 4:16 PM
Subject: Re: [DeTomaso] fuel pumps
I did an AN 90-degree on the bottom of the tank to -8, to a mongo
filter,
to an electric pump.
I know, youA^1re not supposed to run a filter before the pump. Sue
me. I
will clean it annually, and itA^1s a really big filter.
I had a RobbM mechanical, but I recently switched to Webers, which like
4-6psi. I was going to run the Robb pump with a regulator to step it
down
to ~5psi, but all that crap on the front of the engine looked too red
neck.
At any rate, -8 is a nice size from the bottom of the tank to the fuel
pump, and it doesnA^1t hang lower than the body/frame, so IA^1m not
worried
about it hitting anything.
Another note is that the plug has metric threads that are very close to
AN
threads. If you use the proper sized AN elbow, you donA^1t need an
adapter.
If I had the tank out, I might try a submersible electric pump. But
as-is, I am very happy with my results.
On 11/18/14, 5:35 PM, "Garth Rodericks via DeTomaso"
<[1]detomaso at poca.com>
wrote:
> If I recall correctly, the welded bung in the bottom of the tank
> already extends at least 1/4" up into the tank. I'm not too
concerned
> with crap from the bottom of the tank. My tank was spotless inside
> before reinstalling the engine and I added a serviceable pre-filter
> between the tank and the pump and the obligatory fuel filter between
> the pump and carb as well. The only way crap will get into the tank
is
> if it comes from the gas pump at a station, and I'd rather the crap
> gets removed from the bottom of my tank and trapped by the filter
than
> left to collect and build up to the point of causing recurring
> problems.
> My 2-cents. YMMV.
> __________________________________________________________________
>
> From: Larry - Ohio Time <[2]Larry at ohiotimecorp.com>
> To: 'Garth Rodericks' <[3]garth_rodericks at yahoo.com>;
[4]adin at frontier.net
> Cc: [5]detomaso at poca.com
> Sent: Tuesday, November 18, 2014 12:56 PM
> Subject: RE: [DeTomaso] fuel pumps
> The only thing I mite add is to weld a small nipple (1\2" long) onto
> the end
> of the valve going into the tank so that you are not taking the fuel
> and
> crap off the bottom of the tank into the line.
> Larry (too much old crap) - Cleveland
> -----Original Message-----
> From: DeTomaso [mailto:[1][6]detomaso-bounces at poca.com] On Behalf Of
Garth
> Rodericks via DeTomaso
> Sent: Tuesday, November 18, 2014 3:40 PM
> To: DeTomaso Mail List; [2][7]adin at frontier.net
> Subject: Re: [DeTomaso] fuel pumps
> One more comment...
> Note that this 90-degree valve is only 2.75" top to bottom, which
means
> the
> installed height is less since it threads into the drain plug bung
in
> the
> bottom of the
>
tank.http://images.jamestowndistributors.com/woeimages/hardware/large/5
> 6744-
> 1.jpg
> Therefore, there are no valves, hoses or fittings to dangle below
the
> Pantera's chassis or frame rails to risk being broken off by speed
> bumps or
> stray road debris.
> From: Garth Rodericks <[3][8]garth_rodericks at yahoo.com>
> To: DeTomaso Mail List <[4][9]detomaso at poca.com>;
"[5][10]adin at frontier.net"
> <[6][11]adin at frontier.net>
> Sent: Tuesday, November 18, 2014 12:35 PM
> Subject: fuel pumps
>
> <<< Also, it seems any pump sucking through a tiny inlet will never
be
> happy. Anyone done a -8 upgrade from the tank to the pump? >>>
> Not a -8, but I plumbed mine with 3/8" (-6).
> I went with the RobbMC pump and pre-filter on my 383 stroker
Cleveland
> when
> the Holley mechanical pump began leaking.I plumbed it from the
bottom
> of the
> tank with a 1/2" 90-degree stainless marine fuel valve from Groco.
>
[7][12]http://www.jamestowndistributors.com/userportal/show_product.do?
pid=
> 56744
> and 3/8" steel fuel line from the pump to the top of the engine
where
> it
> goes through a fuel filter right before the carb inlet.
> The biggest issue, regardless of where you plumb your fuel line from
is
> the
> restriction in the banjo fitting or elbow. The stock banjo fitting
on
> the
> top of the tank forces all the fuel through a small orifice that's
> about
> 1/8" in diameter. And many 90-degree fittings significantly
restrict
> fuel
> flow as well. I went with the 1/2" Groco Marine fitting so it
wouldn't
> become the bottleneck that starves my engine for fuel.
> Cheers!Garth#4033
>
>References
>
> 1. mailto:[13]detomaso-bounces at poca.com
> 2. mailto:[14]adin at frontier.net
> 3. mailto:[15]garth_rodericks at yahoo.com
> 4. mailto:[16]detomaso at poca.com
> 5. mailto:[17]adin at frontier.net
> 6. mailto:[18]adin at frontier.net
> 7.
>[19]http://www.jamestowndistributors.com/userportal/show_product.do?pi
d=56744
>_______________________________________________
>
>Detomaso Forum Managed by POCA
>
>DeTomaso mailing list
>[20]DeTomaso at poca.com
>[21]http://poca.com/mailman/listinfo/detomaso_poca.com
References
1. mailto:detomaso at poca.com
2. mailto:Larry at ohiotimecorp.com
3. mailto:garth_rodericks at yahoo.com
4. mailto:adin at frontier.net
5. mailto:detomaso at poca.com
6. mailto:detomaso-bounces at poca.com
7. mailto:adin at frontier.net
8. mailto:garth_rodericks at yahoo.com
9. mailto:detomaso at poca.com
10. mailto:adin at frontier.net
11. mailto:adin at frontier.net
12. http://www.jamestowndistributors.com/userportal/show_product.do?pid=
13. mailto:detomaso-bounces at poca.com
14. mailto:adin at frontier.net
15. mailto:garth_rodericks at yahoo.com
16. mailto:detomaso at poca.com
17. mailto:adin at frontier.net
18. mailto:adin at frontier.net
19. http://www.jamestowndistributors.com/userportal/show_product.do?pid=56744
20. mailto:DeTomaso at poca.com
21. http://poca.com/mailman/listinfo/detomaso_poca.com
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