Facet-Purolator Posi-Flo Fuel Pump 60304

Uncle Phil said:
...has a lifetime warranty on it - time will tell what that really means! ;)
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I know what that means...
When it goes out (because it will), IF you pay to ship it back to them for inspection, IF they determine it was their fault it failed, and IF you pay a shipping and handling fee, THEN you will have paid slightly more than a new one... but it was fully covered under warranty.:rofl1:
 
Just got back from a 60+ mile test run on Redbird with the Quantum in tank pump and the Chinese fuel pressure regulator set at 1.5 PSI.
It required the 'choke' just like it should and ran really well through a mix of twisties, hilly 2 lane and interstate.
It does seem that 1.5 PSI is the sweet spot that the ST1100 carbs want (I tried other settings also).
As I said, only time and mileage will tell how well this set up is going to work - just like your experience! ;)
 
I like the idea of an actual regulator instead of depending on the pump spec.
:thumb:
 
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Dale_I said:
I like the idea of an actual regulator instead of depending on the pump spec.
:thumb:
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I've been in contact with Quantum about that issue and I am hoping they will come up with their own regulator/check valve solution.
I'm a little leery of the quality of my current Chinese regulator solution but I did not want to spend big bucks just to experiment.
I've offered to test the Quantum solution if they come up with one since I have 4 ST1100s.
At least they have responded to my problem with their pump producing 6 PSI.
We'll see how far it goes.
 
Uncle Phil said:
Just got back from a 60+ mile test run on Redbird with the Quantum in tank pump and the Chinese fuel pressure regulator set at 1.5 PSI.
It required the 'choke' just like it should and ran really well through a mix of twisties, hilly 2 lane and interstate.
It does seem that 1.5 PSI is the sweet spot that the ST1100 carbs want (I tried other settings also).
As I said, only time and mileage will tell how well this set up is going to work - just like your experience! ;)
Click to expand...
Phil, did you verify the output pressure?
 
Dale_I said:
When I did the original install I took the air duct and pointed it at the pump.

11Fuel.jpg

After removing the valve, the pump fits in it's place under the upper cover.

17Fuel.jpg


I just updated the original installation thread with an update. In short, the electric system worked great for 18k+ miles. After that, I started running rich and passing raw fuel through the motor. I have not torn down the carbs for an inspection, but my suspicion is that crud from a 10 yr storage dislodged and a good cleaning will fix the problem. However, without having actually confirmed that, I can't say the pump isn't the cause either.

I really don't think it is the electric pump though. I should have disassembled the carbs and cleaned them when I replaced the rest of the fuel system. Another option is that it is a 20 year old bike and it could have failed during the normal cycles of wear and tear. Eventually.... all carbs will need rebuilding. Just the nature of the beast.
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I have done an almost identical installation with the same pump about 5 years ago. It has been working fine without issues and I have ridden in some pretty hot 110 deg F temperatures including traffic, freeway and up long grades.
 
I rigged up the Facet Posi-Flo pump and tested the dead head pressure for both the Facet and the internal pump. I set the power supply to 13.2v.

For the Facet pump, the pressure gauge read 2 PSI when I blocked the flow.

When I ran the internal pump and blocked the flow, it barely budged the needle on the gauge (less than 0.5 PSI). I don't know how accurate the gauge is at very low pressures. Even if it's off by 50%, the internal pump is still running at less than 1 PSI.

The Honda engineers did a really good job designing a very low pressure pump that has good flow. Before I put the Facet pump in place, I tested the flow rate of the Honda pump and it was 32 gallons/hour!

I'm wondering if I want to use this particular Facet pump as a backup because I'm thinking even 2 PSI is too much pressure (its max rated pressure is 2.5 PSI). Facet has a pump that has a maximum rating of 1.5 PSI that I'm going to order. It is one of their cube-styled pumps that has a positive shut off valve, so I wouldn't be able to leave it in line, but it wouldn't be difficult to install on the side of road if necessary.

Here's a video showing the test:

 
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From my fooling around with my pressure regulator, I found 1.5 PSI was just about right.
Anything above that seem to be too much.
That is assuming the regulator was doing what it was supposed to do since I haven't tested it with a gauge. ;)
 
Uncle Phil said:
From my fooling around with my pressure regulator, I found 1.5 PSI was just about right.
Anything above that seem to be too much.
That is assuming the regulator was doing what it was supposed to do since I haven't tested it with a gauge. ;)
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Did you test any settings below 1.5 PSI? I am also looking at regulators as an option.
 
Here are some numbers that came up in this thread- There's some documented fuel pressure readings on this page:

Someone recorded ST1100 fuel pump pressure readings;

Year Flow Rate (15 Seconds) Pressure (Fuel Cap off)
'92 500 ml 16.5 oz/in2 (1.03 PSI)
'98 na Erratic (This pump is a known failure)
'99 700 ml 20 oz/in2 (1.25 PSI)
'91 500 ml 17 oz/in2 (1.06 PSI)
'94 250 ml 11 oz/in2 (0.69 PSI) This was the bike that was having fuel problems.

You can find the original article here;
Fuel Pump Diagnostics ( ST1100 )
 
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So I returned the 0-15 PSI pressure gauge and got a bigger 0-10 PSI one in the hope that it would be more accurate in the sub 1 PSI range. I reran the tests and the result is that this gauge is more useful than the previous one. This will help when I install a pressure regulator. Unfortunately, the only made-in-the-USA fuel pressure regulator I could find (Edelbrock) that is adjustable down to 1 PSI is back-ordered until April/May time frame. I'll probably order a Chinese-made one to play around with.

The internal pump ranged from about 0.5 - 0.75 PSI and the Facet pump around 2.3 PSI. Here's the video:

 
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To close out this thread, I've decided not to go with this pump. I tested a regulator from Summit Racing that had a spec'd regulation window of 1-4 psi and it the best it could do was 1.8 psi. Also, I was not able to find a testimonial where anyone was able to regulate a fuel pump down to 1 psi with ANY regulator. I guess there is just not that many situations that call for that. So I ordered the lowest pressure pump Facet makes which is rated from 1-1.5 psi. It cannot be kept in-line since it has positive shutoff, so it will reside in the pannier to be put in service in the event the stock fuel pump fails.
 
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