The problem with the 3.5 is that it does not have a fuel pump, which
is required for a external tank. Several helpful list members sent
me testimonials and even a page out of the shop manual on how
to modify the 3.5 to have a fuel pump.
I just got off the phone with Nissan, and it appears that it is
easy to add the pump to a pre-1992 engine, but for an engine
of my newer vintage it would require taking the block apart and
drilling thru the head to get the suction power to run the
fuel pump. This is not really an option for me, so it looks
like I will have to stick with unpleasant water-way refueling
of the tiny internal tank.
Derek Jensen
P-15 # 694 "El Nino"
Portland, OR <<
Dear Derek,
I have successfully install an external fuel tank (actually internally
installed in a P-15) to a 3.5 Tohatsu. It uses the original fuel pump as an
elbow and strain relief, a OMC 4 HP vacuum pump, most all the original parts
in the Nissan conversion kit plus some extra fuel lines, and some easy
drilling. The required taking the block apart and
drilling thru the head to get the suction power thing was done by a dealer in
Massachusetts. This cost about $65 plus they made a machined manifold to
attach a vacuum line to for I think around $50. This all took awhile but I
think it was worth the time and cost.
As far as know I have the only P15 with a working setup.
You can contact me if you want to explore this further. It is a bit complex
to install, but nothing insane.
My e-mail is Randykesh@aol.com
Randy Ferino
Serendipity P15 #2000