Performance Boats Forum banner

1 - 18 of 18 Posts

·
Bouncing off rocks
Joined
·
82 Posts
Discussion Starter #1
I have a 6.0LS in my jet boat that has a belly tank. Ive tried several different electric fuel pumps with varying degrees of success. The electrics work fine when primed, but they are a real pain to get primed if you run out of/low on gas or if the boat has sat for more than a day. When I ran SBC or BBC w/ mechanical pump in this boat I never had a problem.

So my question is: will a belt drive fuel pump like aeromotive 17140 draw fuel from below as well as a standard mechanical diaphragm pump? Are there any pitfalls to running a belt driven fuel pump? I would really hate to drop $500 and still have the same problems. Any better ideas?

 

·
Registered
Joined
·
1,278 Posts
my .02 cents...K.I.S.S....go back to what worked for you before & save the $$$ on something you really dont need! :)...just sayin'

FastRat
 

·
Registered
Joined
·
4,318 Posts
Just guessing here but i don't think ls motor comes with a mechanical pump, or a place to bolt it to or a lobe on the cam.
 

·
Premium Member
Joined
·
3,360 Posts
How about an in tank electric like the cars use, might be a whole lot cheaper? What is the tank made of?
 

·
Or Seth, either one
Joined
·
3,270 Posts
I have a 6.0LS in my jet boat that has a belly tank. Ive tried several different electric fuel pumps with varying degrees of success. The electrics work fine when primed, but they are a real pain to get primed if you run out of/low on gas or if the boat has sat for more than a day. When I ran SBC or BBC w/ mechanical pump in this boat I never had a problem.

So my question is: will a belt drive fuel pump like aeromotive 17140 draw fuel from below as well as a standard mechanical diaphragm pump? Are there any pitfalls to running a belt driven fuel pump? I would really hate to drop $500 and still have the same problems. Any better ideas?

Just guessing here but i don't think ls motor comes with a mechanical pump, or a place to bolt it to or a lobe on the cam.
:)bulb

I forget who did it, there was a thread a long while back about this. Some electric pumps are fully submersible. Mounting one inside the fuel cell will certainly solve any priming issues... I would assume.

Example: Aeromotive A1000 FUEL PUMP
 

·
Registered
Joined
·
310 Posts
From what I understand, belt drive pumps pull really well as long as their primed. Many drag cars run a rear fuel tank down to 1.2 60'. Biggest problem with them is the cold start, where many people add an electric just for that purpose. Some have also added check valves with varying degrees of success.
 

·
Registered
Joined
·
636 Posts
You will only have to spend your money once with a belt setup. A belt pump will tell you when its getting tired, a electric pump will just go out most of the time if lucky or if un lucky it will brown out and go lean.
 

·
Registered
Joined
·
2,034 Posts
When I ran my river runner on blown gas carbs, I used the exact setup.
I actually pressed a gilmer pulley on the jet ... u joint holder thing... wtf is that called? YOLK... is that it? Then made a bracket that clamped around my jet pmp. The pump holder bolted to this bracket. Belt, bingo. I used a mechanical regulator with a return to the tank.
Worked without fail.
BTW, I'm sure this is bad (spamming or something) but I have a pump, and belt drive adapter I'd make a smokin deal on.
Wags
 

·
Bouncing off rocks
Joined
·
82 Posts
Discussion Starter #9 (Edited)
there is no mechanical pump provision on an LS . Its an aluminum tank, slight v in it that matches the hull and flat across the top. Only about 7 inches deep in the middle. I hadnt really considered in tank mounting. So i guess a belt drive wouldnt self prime either? Thats pretty much the problem i already have

wags, sending you a pm
 

·
Registered
Joined
·
2,034 Posts
You need to mount a belt drive pump low. That is why I put mine on the jet itself. That was below fuel tank level.
Wags
 

·
Banned
Joined
·
1,263 Posts
I have a 6.0LS in my jet boat that has a belly tank. Ive tried several different electric fuel pumps with varying degrees of success. The electrics work fine when primed, but they are a real pain to get primed if you run out of/low on gas or if the boat has sat for more than a day. When I ran SBC or BBC w/ mechanical pump in this boat I never had a problem.


You weren't using a fine micron filter before the pumps that failed were you ?

Where do you have the return line terminating ?

Do you have a section of line from the pick-up tube that is higher than the fuel pump ?

Have you checked your vent for blockage or incorrect sizing ?
 

·
AKA Blownjet 468
Joined
·
1,205 Posts
check out the other thread here by Unchained today..... put a submersable electric pump
in your tank, and forget about it. (he makes around 2000hp, so it should work fine for you
too):p:D
 

·
Registered
Joined
·
636 Posts
Only if the fuel lines and pump are below the fuel cell
As any good volume fuel system needs. Ive had cam driven pumps pull up a few inches before no problem and the still self primed without issue. I recently had a issue where it wouldnt pull up 8" inches driving and had to change the mounting.
 

·
Registered
Joined
·
310 Posts
As any good volume fuel system needs. Ive had cam driven pumps pull up a few inches before no problem and the still self primed without issue. I recently had a issue where it wouldnt pull up 8" inches driving and had to change the mounting.
True, but there really is no downfall (other than making room for it) for going lower.
 

·
Registered
Joined
·
1,001 Posts
I use two Enderle pumps, one driven by the cam to provide fuel for the engine, the other belt driven to draw fuel from the side tanks to the smaller center tank, that provides fuel to the first pump. I do this simply because I need the additional fuel to allow me to drive on the river. Never had any issues with the belt driven pump loosing prime or any other problems for that matter with the belt drive. I hope this makes sense, I'll post a pic to show what I'm talking about.....

 
1 - 18 of 18 Posts
Top