Fuel Pump and Seating

So I just bought a 74 this past weekend. Its in ok shape, has new engine, but needs the suspension and steering rebuilt. I'm also going to throw a new wiring harness at it as the wiring is kinda scary from 30 plus years of accesories and crap being wired in some pretty shotty ways.

Two problems that I haven't figured out a solution to have popped up in the last couple of days....

A) It has a mechanical fuel pump on the block, and also a electric pump wired hot so you have to manually turn it on and off. Supposedly its fine starting and running at slow speeds on just the mechanical and then needs the electric for higher speeds. However, this seems like an overly complex system. It appears to be a stock single barrel carb, so why can't i just get a new mech. pump? I have no idea if the engine is built to stock specs or has higher compression or a different cam or what so if an electric pump is a better idea, if I add a pressure regulator and do away with the mech. what pressure do I need to run?

B) I'm 6'3", and I know a CJ5 isn't the best for someone my size, but the pedals are killing me. The seat is against the wheel well, and my head is at roll bar level but my feet are at extreme angles to use the petals. After driving it around for about a half hour to see whats working and whats not, my ankle is about to fall off. Does anyone out there have any creative soultions to improving the driving solution?

Thanks in advance for helping out a Jeep newbie!!

 

Outstanding! Thanks for the info.

 

I have run electric fuel pumps on various autos since 1975. And I have
a few tips.


1. NEVER EVER NO WAY run an Electric fuel pump without a OIL PSI
safety Switch and relay in the circuit. Us a Oil pressure switch that
opens the circuit at about 5-7 Lbs of Oil Pressure. Use a relay to
protect the Oil PSI switch from the current draw of the pump.

2. make sure the pump you buy operates at no more then twice the PSI
your carb is designed for.

3. ALWAYS use a PSI regulator and preferably one of the nifty little
1.5" fuel PSI gauges just on the carb side of the regulator so you can
adjust to exactly what your carb is designed to handle.

Side note: The Holly Weber 5200 I use on our Mustang is designed for
only 2.5-2.7 PSI so a regulator can be VERY important depending on the
carb your using.

1. NEVER EVER NO WAY run an Electric fuel pump without a OIL PSI
safety Switch and relay in the circuit. Us a Oil pressure switch that
opens the circuit at about 5-7 Lbs of Oil Pressure. Use a relay to
protect the Oil PSI switch from the current draw of the pump.


Side Note: The reason for this is that is you suffer a roll over with
an electric fuel pump the engine will stall and the float will not
operate properly if its upside down or even on it's side. The results
will be that if you can turn off the electric the pump will over fill
the float bowl and fuel will start pouring out the top of the carb.
NOT a GOOD THING IF YOU ARE UPSIDE DOWN TRAPPED IN YOUR JEEP.

4. Mount the tank as close to the tank as possible and as close to the
level of the tank outlet. These tanks are pushers not pullers.

5. I always have a large free flow filter (the cheap plastic kind
easily replaceable with a couple of hose clamps) between the tank and
the pump. Then I run a clear glass or translucent plastic one between
the regulator and the carb if the carb inlet doesn't have a sintered
[sic] bronze filter in it.


6. I repeat NEVER RUN AN ELECTRIC FUEL PUMP WITH OUT AN OIL PRESSURE
SAFTEY SWITCH IN THE POWER SUPPLY.

7. SEE 6 ABOVE.


A story to reinforce rule #1, 6, And 7

I once had a nice 57 Wagon 226L T90 D18 with a stupid SOA that made
the thing as top heavy as Dolly Parton!

One late night while out with my college room mate we drove back along
a road that circled a gravel pit in Portland. On the way out I got a
little to close to the edge and when the left front started to pull
over and I tried to correct due to the SOA and terrible balance of the
wagon it went over the edge. Rolled twice. One the second roll my ***
slipped between the seat frame and the corner of the door which on the
first roll had been bent up towards the wing window creating a pocket.

The Jeep came to rest on the driver side My *** totally stuck beside
the front seat frame and the ground. My room mates right foot was
stuck in the door above the wing window (luckily after removing his
shoe he was able to get out) My left arm with my fist to my ear was
completely shut in the upper door jam All the meat smashed away from
the bone which luckily did not break.

SO here we are 40-50 feet down in this pit I'm totally pinned in the
rig. My room mate was in pretty good shape having had me to bounce off
of on the way down. He has about 2 quarts of detraining shooting
through him he whips off he shoe gets him self free and crawls out the
pass window and takes off running for help.

As soon as he left what did I hear????????



The frecking electric fuel pump running to beat the band...

The Jeep was hot wired as it had no Key (hadn't got that fixed yet.


So here I am I can't reach under the dash to pull the wires so I do
the only thing I can I kick and Kick and Kick at everything under the
dash with what movement I can manage while my *** is anchored by the
seat frame. Well finally I manage to break the power and the pump stops.

The firemen, the police, the whole frecking Portland rescue team all
show up. And finally after having some lady cop shinning a flashlight
in my eyes for 15 minutes until I can't see anything they all just tip
the thing back on it's wheels. I fall out on to the ground thinking
"that's funny I wouldn't think there would be a piece of wood laying
on the ground" (It was my left arm I couldn't feel any more!!!)

They haul me off to the hospital and a nice doctor puts in something
called a Foley Catheter to check for blood in my bladder OK that was
uncomfortable......Then about 45 minutes later this nice cute nurse
tells me this is going to hurt a little and PULLS IT OUT!!!!! I have
no Idea what Child birth feels like but this has to be close.

If you don't know what one is go here:

http://dictionary.reference.com/search?q=foley catheter

SO unless you want this to happen to you along with the 5 days in the
hospital and 6 weeks on crutches for tearing up the muscles in my
legs. And the loss of my left arm for about 4 weeks. AND of course
dealing with my First auto being a POS after being rolled twice.

USE A FRECKING OIL PRESSURE SAFETY SWITCH...........

Mark W.


Don't meddle in the affairs of Dragons, as you are crunchy and taste
good with ketchup!