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monomanx
Samba Member
Joined: September 25, 2004
Posts: 715
Location: Southeast
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 Posted: Sat Jan 25, 2014 10:09 pm Post subject: Fuel pump delivery on 40HP versus 1500/1600 |
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Is there a fuel delivery difference between the 40 HP pump and a 1500/1600 pump? I have a couple of pumps which I assume are 40 HP..(They are definitely not 36 HP) that have the screw in fuel inlet line.
I tore down and am rebuilding a 1600 SP and the pump on it is a new Brazilian pump. I wanted to have a spare on my trip this upcoming summer. The old Piersburg pumps I referenced above would require rebuilding so I want to make sure that they would deliver enough fuel if I were to use them.
Thanks
Chris |
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EverettB 
Administrator
Joined: April 11, 2000
Posts: 69798
Location: Phoenix Metro
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| Posted: Sat Jan 25, 2014 10:22 pm Post subject: |
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I'm guessing you mean fuel pressure or fuel amount per stroke?
Pressure - No.
Fuel delivery amount - Not as far as I know.
1500s used the screw-in line too.
This is just a year-to-year change. (1966 change to the new style pump)
Type 3s do have a higher pressure pump.
This was accomplished through the use of a thicker gauge wire on the diaphragm spring.
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monomanx
Samba Member
Joined: September 25, 2004
Posts: 715
Location: Southeast
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| Posted: Sat Jan 25, 2014 10:47 pm Post subject: |
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Everett,
Thanks for the clarification. I was not thinking about pressure but fuel delivery.
I just did not want to rebuild a pump that would not support the 1600s fuel requirement when it was developed for a 40 HP.
The only hard part with running one style and having a spare of a different style is going to be fuel line attachment.
Much appreciated.
Chris |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20377
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Sun Jan 26, 2014 8:48 am Post subject: |
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Most pumps will deliver enough fuel to supply a 2000cc motor with duel Weber 44idf at sustained wide open throttle.... Seriously doubt you will have any problem with volume....
Dale
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