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Fuel pump quicky

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T

Tinster

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A real easy question.

I have a hard wired, backup, emergency
electric fuel pump in my 69TR6.

Does the electric pump simply push fuel to the carbs?

Or does it suck fuel from the tank as well?
Mine is mounted on the wheel covering in the engine bay.

thanks,

now, we're goin-downee-OH-shen in Amos.
Might check out a possible "project vehicle".

hehehehehe

d
 
Dale,

Think if a sump pump. It has to pull something to be able to push it.
 
How do I know if it is a sump pump.

It just dawned on me this morning that I have no fittings
for the two emergency mechanical pumps I carry in the trunk.
My exosting mechanical pump was custom machined for nipple
fittings.

Here is my electric pump installed. Will this setup get
me home?

thanks,

dale



tony.jpg
 
Dale,

Didn't you try this pump already, when you installed it? If it gets you running in the garage, it will get you hpme. More worries about excessive fuel pressure with electric pumps than not enough.

I see that you are tweaking the adjustment in the picture above. Did that adjusting tool come with the new pump?
 
Tinster said:
I don't know much about electric fuel pumps, but working near your distributor with a wrench that size will get you 20 hours of community service in the state of Michigan.
tony.jpg
Click to expand...
 
Brosky said:
Dale,

Didn't you try this pump already, when you installed it?
I see that you are tweaking the adjustment in the picture above. Did that adjusting tool come with the new pump?
Click to expand...

The electric pump runs fine. I never connected it to the gas tank.
I never gave much thought about gravity feed into a pump.
All our construction pumps suck!!

Banjo instructed me to purchase that adjusting wrench to properly
tighten down the carb dashpot dip sticks. I couldn't get enough
torgue wiff me screwdriver.

d
 
Now it all makes sense to me. As clear as mud, no less.
 
tomshobby said:
It will pull once it becomes primed.
It should have some suction when dry but probably not enough to raise much vacuum. So it will work best if the fuel level is higher than the pump.
Click to expand...

Thanks Tom,

Now I'm thinking I need to install another, hard wired, electric
pump maybe on the driver's trailing arm to get gravity feed and push
the fuel into my primary emergency electric fuel pump.

With that said, it makes better sense to simply install a parallel
fuel system complete with shut off valves.

Mechanical pump fails: turn two valves, press the on buttons on both
electric fuel pumps and I'm heading home!!

Certainly a consideration and I can design such a system.

But prob'ly not 'cause once I get fittings, Paul's mechanical
pump is going in Amos and <span style="color: #CC0000">no way Jose, is Paul's
pump gonna fail on me! </span>

d :thumbsup:
 
I was wondering, with the kind of redundancy you are incorporating, is this Triumph being prepared for a "moonshot". I mean, it seems as if you want the same amount of backup as an Apollo rocket. I did read about 20 yrs. ago in the Enquier, a WW2 bomber was found on the moon. Will there soon be a Triumph there also?
 
You'd haff to know the Crypt Car, lad.
Installed pump No. 5 with less than 600 miles
driven on the car.

Until of late, the beast averaged 7 miles between
breakdowns. Not fond of breakdown, am I !!

I'm just guessin' here that ya ain't familiar with
the term "Pedro-ized". My Six was Pedro-ized something
awful. The nearest Triumph mechanic to me is prob'ly
about 1,200 miles 'cross the ocean.

I do what is necessary to drive this TR6!!
My breakdown kit:

repairKit.jpg
 
Dale, if you are that bothered, stick a low pressure pump in the trunk in the PI mounting location (use a facet or something similar).

Put it in line with the stock one and power it off switched 12v so it is always on - it should still push enough to get you home if the stock one breaks down.

Same with the stock fp - it will pull through enough to allow you to get back home if the electric craps out. It won't pull enough for extended high rpm cruising, but it will let you get home...

Of course you could have two electrics in the trunk, no mechanical and a 3 way petcock, but that smacks of overkill
 
How far can you go on an island?

Just carry a cell phone and leave the rest home in your garage. If you break down, hitch a ride home and get the parts that you need.

You'll be amazed with your new found power to weight ratio after your trunk is empty. Instant performance gain.

There will also be enough room for a nice picnic basket to share with the Mrs. on those nice rides.
 
LastDeadLast said:
Why don't you just carry a spare OEM pump? It could be replaced in a manor of minutes... So much easier if you ask me.
Click to expand...

Shannon-

I carry two spare mechanical fuel pumps plus I have the installed Purolator
electric fuel pump. I also have Paul's fantastic rebuilt OEM mechanical.
So that makes 4 backups I have with me at all times.

It was only when Paul's pump arrived that it dawned on me, I have no fittings
for any of my spare mechanical pumps. Now I'm wondering if my hard wired
electric Purolator will dry lift the 8" I need.

Whew!!! I looked it up. The tiny pump (also a gift from a fellow BCF member)
will dry lift a min of 12". I'm golden.

WOW!!! Owning a Triumph sure extends one's learning curve into many arenas.

Drove a bunch of miles (maybe 45) with only one engine shut-down on the highway.
Like before, it quickly caught again and we proceeded to the beach.

d
 
Tinster said:
Does the electric pump simply push fuel to the carbs?

Or does it suck fuel from the tank as well?
Click to expand...
ISTR that design of an individual fuel pump comes into play here. Some pull better, and some push better. For example: T-series MGs (sorry). The MG-TD had an SU fuel pump up on the firewall under the bonnet. Later MGs had an SU fuel pump back near the tank. I'm pretty sure that there was a difference between those pumps, but I don't recall what it is.

Or am I having a pre-senior moment again? :crazy:
 
Tinster said:
Drove a bunch of miles (maybe 45) with only one engine shut-down on the highway.
Click to expand...

<span style="font-style: italic">You put spare engines in there?</span>

Now Dale, <span style="font-weight: bold">that's</span> overkill...
 
Dale if you put the electric fuel pump anywhere near the height of the mechanical pump, there will not be any problem at all since the mechanical pump is below the level of the fuel tank. Just release the fuel line for a second, you will get a steady flow of fuel out of the line without any pump. The only time you need any sort of vacuum is if you run the tank totally dry.

what kind of gas millage do you get carrying all that stuff around?
 
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