Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

DIY TRIPLE PUMPS on the quick and cheap

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Old Aug 12, 2010 | 02:47 AM
  #41  
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I stumbled upon this thread randomly, but I actually now own the original triple in tank setup Veee8 did. I am working on putting together my fuel system now and figuring out all the little fittings I'll need. How is your setup holding up for you MM?
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Old Aug 12, 2010 | 04:33 PM
  #42  
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havent beat on it yet, but i will be releasing a fresh post of fuel system **** here shortly.. redoing everthing ahead of the tank.. this stuff stays the same.

i can't imagine why it would not work awesome.
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Old Aug 12, 2010 | 08:16 PM
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Originally Posted by MIGHTYMOUSE
i can't imagine why it would not work awesome.
3 pumps...with E85 isnt enuf flow
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Old Aug 12, 2010 | 08:32 PM
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i am just about done with my three pumps. but i did 1 255 that will always be one. and 2 bosch 044 pumps. ordered a custom fuel tank with a 12" sq dorr in the top. then i fabed my own holding brackets inside the tank.

should get me to 1200 wheel horse with fuel to spare on e85
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Old Aug 12, 2010 | 08:51 PM
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Originally Posted by MECHAM
3 pumps...with E85 isnt enuf flow
What kinda power are you going for? Should support 1200 hp or so.
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Old Aug 12, 2010 | 09:33 PM
  #46  
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not enough to beat me lol jk (we know each other) but e-85 takes a lot more fuel i run 165lbs injectors on a street car
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Old Aug 12, 2010 | 09:49 PM
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Originally Posted by t-1
not enough to beat me lol jk (we know each other) but e-85 takes a lot more fuel i run 165lbs injectors on a street car
Yeah about 30% more.
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Old Aug 13, 2010 | 12:11 AM
  #48  
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Originally Posted by MIGHTYMOUSE
havent beat on it yet, but i will be releasing a fresh post of fuel system **** here shortly.. redoing everthing ahead of the tank.. this stuff stays the same.

i can't imagine why it would not work awesome.
I read a little ways back you were replacing the fuel lines with something lighter. I'm thinking that using 1/2 stainless tubing and the OEM feed as a return will get me towards what I'm hoping to reach.

Originally Posted by Big_Bird_WS6
i am just about done with my three pumps. but i did 1 255 that will always be one. and 2 bosch 044 pumps. ordered a custom fuel tank with a 12" sq dorr in the top. then i fabed my own holding brackets inside the tank.

should get me to 1200 wheel horse with fuel to spare on e85
That sounds awesome. Post some pictures of it.

Originally Posted by MECHAM
3 pumps...with E85 isnt enuf flow
Again, what kind of power are you looking for?

Originally Posted by black98ws6ta
Yeah about 30% more.
What BSFC are you using to calculate flow necessities?
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Old Aug 13, 2010 | 09:00 PM
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Originally Posted by Beaflag VonRathburg
I read a little ways back you were replacing the fuel lines with something lighter. I'm thinking that using 1/2 stainless tubing and the OEM feed as a return will get me towards what I'm hoping to reach.



That sounds awesome. Post some pictures of it.



Again, what kind of power are you looking for?



What BSFC are you using to calculate flow necessities?
he already has the power, and had it on e85 and it wasnt gonna work. not sure how high he tried to turn it up
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Old Aug 16, 2010 | 04:26 PM
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How much do the 3 pumps actually flow as installed ? Have you tested them in real life conditions ?
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Old Aug 17, 2010 | 05:31 PM
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Originally Posted by stevieturbo
How much do the 3 pumps actually flow as installed ? Have you tested them in real life conditions ?
The limiting point would obviously be the 3 way connector. It's been enough for 1200 rwhp in the past. I don't think I've seen anyone top out three pumps, but it would be interesting to know the actual flow value.
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Old Aug 17, 2010 | 06:13 PM
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Originally Posted by Beaflag VonRathburg
What BSFC are you using to calculate flow necessities?
It is common knowledge that thats about how much more fuel it takes to achieve the same air fuel. I have converted about 8 600-1000 rwhp cars from gas to e-85 and they all have 2-3 walbros.
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Old Aug 20, 2010 | 09:03 AM
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Originally Posted by stevieturbo
How much do the 3 pumps actually flow as installed ? Have you tested them in real life conditions ?
did you see the video on the first page? lol. they flow alot. lol.
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Old Aug 20, 2010 | 11:20 AM
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Originally Posted by Big_Bird_WS6
did you see the video on the first page? lol. they flow alot. lol.
I seen fuel flowing into a bucket. So what ?

There was no details of how it was tested, or what it was flowing.

"A lot" isnt really sufficient for designing a fuel system, or for making comparisons with other designs.
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Old Oct 15, 2010 | 12:10 PM
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Your dual in tank writeup is like the Bible to me at the moment, and thank you very much for posting up your builds. I'm thinking thousands upon thousands of dollars has been saved by many people.

I have one quick question. How do you make it so you have one pump running full time and one or two kicking on under boost? My plan is a dual setup with one Walbro running all the time and a second coming on under boost. Confused as to how to keep one off while the other is running until you want it to turn on. Thanks man!
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Old Oct 15, 2010 | 04:52 PM
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some people use a 'hobbs' switch which activates it at certain boost, other people activate it by throttle position like a nitrous switch, other people can activate it by an output on their computer, other can use an output by their boost controller.
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Old Oct 15, 2010 | 05:35 PM
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very good informative thread and write up
book marking this one
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Old Sep 6, 2012 | 07:37 PM
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I just did triple pumps in a plastic tank on a hobbs switch ill post pics
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Old Sep 9, 2012 | 04:29 PM
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1 pump always one. 2 & 3 come on at 2psi + hobbs

Factory fuel level works with modified bucket. just cut 90% of the bucket. Only concern now is the bucket not holding any fluid. The metal tanks ive heard actually have built in baffles in the tank?
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Old Sep 9, 2012 | 05:19 PM
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Originally Posted by FasTimeSS
The metal tanks ive heard actually have built in baffles in the tank?
correct
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