fuel pump


Information and questions on GL1100 Goldwings (1980-1983)
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steve allen
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Motorcycle: 1987 1200 Aspencade
1994 GL1500 SE
1995 CB1000

fuel pump

Postby steve allen » Tue Jan 12, 2010 11:56 am



does anyone know the pressure of fuel pump? What is the vaccum on the fuel inlet side?



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MSGT-R
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Re: fuel pump

Postby MSGT-R » Tue Jan 12, 2010 1:21 pm

Mechanical pumps usually produce 2-4 psi. There should be no operational vacuum per se on the "draw" side since it's below tank height.
Don't spook the road sheep.

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WingAdmin
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Re: fuel pump

Postby WingAdmin » Tue Jan 12, 2010 3:06 pm

There are different measurements depending on the engine speed. From the service manual, page 4-4:

2.4 psi at cranking speed
2.3 psi at 1100 rpm
2.0 psi at 5000 rpm

Volume: 450ml (15 oz) per minute at 3000 rpm, no pump load (i.e. outlet of pump running into a container)

As mentioned, there shouldn't be any vacuum at the inlet.

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MSGT-R
Posts: 177
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Location: Utah
Motorcycle: 13 F6B
81 GL1100 (gone)

Re: fuel pump

Postby MSGT-R » Tue Jan 12, 2010 3:56 pm

Thanks for having the book (I'm at work). I was recalling theory from automotive experience. GM's operated @ 4 psi, imports slightly less. 8-)
Don't spook the road sheep.

steve allen
Posts: 149
Joined: Thu Nov 19, 2009 8:51 am
Location: theodore, al
Motorcycle: 1987 1200 Aspencade
1994 GL1500 SE
1995 CB1000

Re: fuel pump

Postby steve allen » Tue Jan 12, 2010 4:04 pm

WingAdmin wrote:There are different measurements depending on the engine speed. From the service manual, page 4-4:

2.4 psi at cranking speed
2.3 psi at 1100 rpm
2.0 psi at 5000 rpm

Volume: 450ml (15 oz) per minute at 3000 rpm, no pump load (i.e. outlet of pump running into a container)

As mentioned, there shouldn't be any vacuum at the inlet.

is there an electric fuel pump I could use if I wanted to change for the old one?

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MSGT-R
Posts: 177
Joined: Thu May 07, 2009 10:19 am
Location: Utah
Motorcycle: 13 F6B
81 GL1100 (gone)

Re: fuel pump

Postby MSGT-R » Tue Jan 12, 2010 4:08 pm

Yup, and all the details have been worked out:

http://www.randakks.com/Electrical%20Parts.htm


Don't spook the road sheep.


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