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West Wight Potter Mailing List maintainer
dfarrell@ridgecrest.ca.us
List hosted by www.tscnet.com
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Hmmmmph! Sounds like the old ghost/pseudo/quasi fuel pump gimmick to me.
Logic prevails on some things and on this one it has to be that if a built
in fuel tank works on gravity than an external one mounted above the engine
has to as well, even if all it amounts to is a hose (with an air vent)
leading into the existing "internal" fuel tank. Mike
----- Original Message -----
From: <SolarFry@aol.com>
To: <wwpotter@tscnet.com>
Sent: Tuesday, March 21, 2000 3:35 PM
Subject: Re: 2 cycle outboard motor external fuel tanks require fuel pumps!
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> West Wight Potter Mailing List maintainer
> dfarrell@ridgecrest.ca.us
> List hosted by www.tscnet.com
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> Eric:
>
> Please don't get mad at me...
>
> I have investigated this topic to exhaustion. If you go back in archives
you
> will find me searching for a solution. The 3.5 Nissan manual actually
shows
> the installation of a fuel pump to a hole in crankcase for an external
tank
> option. However, no luck locating one from Nissan/Tohatsu or Merc.
>
> I have several shop manuals for Evinrude, Nissan/Tohatsu, Merc for all
> outboards from 2hp thru 150. The story they tell is.. No pump no suction
for
> an external fuel tank. If you check a 4 hp Evinrude with factory
provision
> for external fuel tank you will find the pump attached to bottom of
crankcase
> on left side looking at front of motor... If you check a Nissan 8 you will
> find a fuel pump attached to... Crankcase.
>
> You need a fuel pump. Don't none of you guys go out and get an external
3.5
> gallon fuel tank expecting to just hook it through fitting and run off of
it.
> Only the Evinrude 4 has a fuel pump neither Nissan/tohatsu or Merc under 5
> have one.
>
> Heck! I even toyed with the idea of putting in an automotive electric
fuel
> pump powered by onboard battery to run the lil 3.5 of an external tank. I
> chickened out with fear of fuel leakage or Boom! Blowing myself up.
Another
> time I toyed with idea of mounting tank on coaming and hooking it up to
top
> of gas cap so it would gravity feed. EcoTerrorist wife stopped me...
>
> There used to be a tank like In a message dated 3/21/00 8:18:39 AM Pacific
> Standard Time, bblohm@hpbs1686.boi.hp.com writes:
>
> << With all the feedback on where to put the external tank, I'm wondering
> why not just make a bracket that mounts on the motor and holds the tank
> right above the engine? It'd need a linkage of some sort to keep it
> level when the engine is tipped out of the water. Hmmmmmmmm. >>
>
> This lil 1/2 gallon tank screwed into the fuel cap receptacle on the lil 2
hp
> engines providing extended range. I could no longer find it.
>
> I can probably scan the page off the Tohatsu manual and e-mail to you if
you
> are interested.
>
> Best
> SF
>
>
> In a message dated 3/21/00 9:59:53 AM Pacific Standard Time,
etj@nwlink.com
> writes:
>
> << Does
> anyone here have an actual service manual for one of these small
outboards
> (specifically
> the Tohatsu/Nissan) that tells for sure?
>
> The upshot of all this is, of course, that if these small outboards don't
> require
> a fuel pump, whoever wanted to try using an external tank may be able to
do
> so with some simple fittings.
> >>
>
This archive was generated by hypermail 2b29 : Fri Mar 31 2000 - 03:27:12 PST