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Modest beginnings of my M750 project

Started by memper, March 07, 2013, 07:40:15 AM

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koko64

#45
March 16, 2013, 04:39:24 AM Last Edit: March 16, 2013, 04:42:23 AM by koko64
Quote from: ducpainter on March 16, 2013, 04:19:45 AM
That method would reduce the gravity effect of the system and require that the pump suck fuel up the hose to the pipe.

Then I wouldnt cut, I'd use an internal hose and suck it out with the oem external pump or alternative pump. Mind you I agree the SS internal pump is a cleaner look without potential fuel issues (especially with pumper FCRs). The SS tank is unmolested in case m wants to go back or change later.

Actually, when I think about it, the oem hex pump is pretty industrial and nasty looking.

2015 Scrambler 800

ducpainter

#46
March 16, 2013, 04:45:13 AM
If he made a gentle arc and fastened the end of the hose at the bottom so it stayed put...zip tied to the pipe?...it would probably work, provided his OEM pump is functioning correctly.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


koko64

#47
March 16, 2013, 05:37:17 AM
I would use a metal hose connector fitting to run a small gauze bag filter on the end of the hose. With the metal insert it could be clamped or wired to the pipe quite firmly, or something like that.
I dont know which zip ties handle fuel, but there should be a brand that does.

Interesting to see which way m goes. I have to do so something similar on a bike for different reasons.
2015 Scrambler 800

ducpainter

#48
March 16, 2013, 05:56:05 AM
I don't know if I'd bother with the strainer. He'll still be running an external filter, and the strainer is just there to keep big chunks out of the pump...which he isn't using...

but I'm lazy. ;)
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


memper

#49
March 16, 2013, 06:44:02 AM Last Edit: March 16, 2013, 06:45:43 AM by memper
Interesting idea with the loop of fuel line. I could use a stainless steel zip tie. Would have to find submersible fuel line though.
Question about the oem pump. Seeing that it is vacuum operated, does height relation to the fuel outlet play a role? Im considering making a mount off of the battery tray which would put the pump at par with the outlet with the possibility of it being higher.
Question 2 about the oem vac pump: will it be ok with FCR'S, or do they operate better with an electric pump or does it not matter?
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#50
March 16, 2013, 06:58:20 AM
My experience with any pump is that they push better than they suck. The stock monster configuration provides gravity feed to the pump, and then the pump pushes up to the carbs.

I'll let Koko answer about the volume capability of the stock pump with FCRs. I haven't installed mine yet.

If I was doing this mod I would use an in tank pump. The tank is set up for it, and it will eliminate any overpressure problems because it has a return. Brad made a good point regarding the high pressure pump in your application. It will work regarding pressure, but the volume capabilities with FCRs is  not known. I think it will be adequate for your 750. The high pressure pump will fit in the stock bracket inside the tank with the rubber sleeve. It gives you another option for used parts and will clean up the install.

As far as submersible line goes, it would be ideal, but in your low pressure situation isn't crucial. The overflow and drain hoses in an efi tank are nothing special and my experience shows they last a long time. Submersible high pressure fuel line is $25/foot with my discount at NAPA. I think regular reinforced line will be fine.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


Duck-Stew

#51
March 16, 2013, 07:40:37 AM
You'll need the submersible fuel line. The regular EFI line will degrade over time an leave a helluva mess.

It's expensive @ $25/foot, but I haven't found an alternative.
Bike-less Portuguese immigrant enjoying life.

ducpainter

#52
March 16, 2013, 08:10:20 AM
Quote from: Duck-Stew on March 16, 2013, 07:40:37 AM
You'll need the submersible fuel line. The regular EFI line will degrade over time an leave a helluva mess.

It's expensive @ $25/foot, but I haven't found an alternative.
How does Ducati get away with that junk they use for the drain and o/flow hoses?

It seems to hold up ok.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


memper

#53
March 16, 2013, 09:40:00 AM Last Edit: March 16, 2013, 09:42:23 AM by memper
About the lines: What about Tygon? Isnt it fuel resistant and same material on the outside as well as in? McMaster has it pretty cheaply.

About the pump situation. I have not cut anything yet. Still considering options. Just looked on eBay and saw this: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190808255283&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en
Or this:
http://www.ebay.com/itm/New-Intank-Fuel-Pump-for-Ducati-800SS-2003-2007-/281038399612?pt=Motorcycles_Parts_Accessories&hash=item416f31a87c&vxp=mtr
A shame bc I just bought a used ss tank flange by itself. I guess I could just resell it if I decide to buy the above...sigh....
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

#54
March 16, 2013, 09:50:29 AM
Saw this on mcmaster: (posting the url didnt work)
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

memper

#55
March 16, 2013, 11:17:15 AM
Relocated the ignition so the tank nose clears it (still gotta cut the metal part where the stock tank latch connects-would never line up with the ss tank anway). Might keep the fasteners, might weld tabs.
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

ducpainter

#56
March 16, 2013, 12:43:53 PM
I'd go with the OEM pump because it has the rubber sleeve.

You need 5/16" id fuel line...don't see it on that chart.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


memper

#57
March 16, 2013, 01:10:39 PM Last Edit: March 16, 2013, 01:15:21 PM by memper
Agreed. The other one looks suspiciously chinese (bad grammar). I may be wrong though. I wrote to Pinwall to see if they will sell me only the pump cuz I got the other stuff already. We'll see...
Another tubing that has very high fuel resistance from mcmaster is called Viton (5/16"). It even comes in green!
It is a Fluoroelastomer Tubing (whatever the hell that is).

Are all the lines 5/16"? (fuel outlet, carb, etc?) I'd go bust out the calipers to check but its currently snowing in nyc.  [puke]
"Calling a bikini fairing on a monster a fairing is like calliing a girl in an actual bikini proper work attire....unless shes a stripper." -He Man

-----------------------------------------
Important: always check your battery filter and regularly change your headlight fluid.

koko64

#58
March 16, 2013, 01:30:38 PM
The SS and Monster pumps both give heaps of fuel no worries. They'll both flood FCRs with dirty fuel. M's got the big alternator?
2015 Scrambler 800

ducpainter

#59
March 16, 2013, 02:09:25 PM
Quote from: memper on March 16, 2013, 01:10:39 PM
Agreed. The other one looks suspiciously chinese (bad grammar). I may be wrong though. I wrote to Pinwall to see if they will sell me only the pump cuz I got the other stuff already. We'll see...
Another tubing that has very high fuel resistance from mcmaster is called Viton (5/16"). It even comes in green!
It is a Fluoroelastomer Tubing (whatever the hell that is).

Are all the lines 5/16"? (fuel outlet, carb, etc?) I'd go bust out the calipers to check but its currently snowing in nyc.  [puke]
The only place you need to worry is in the tank.

One foot of the NAPA hose will do it, and if you don't pay shipping it will most likely be less than buying from McMaster and add shipping. It is supposedly that same fluoroelastomer compound, but is black.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


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