Enlighten me......
01-12-2006, 12:34 AM
#1
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Join Date: Dec 2004
Location: Kitchener Ont Canada
Posts: 219
Whats the deal with hooking up two Bosch fuel pumps in-line with each other?
To me it makes no sense, first of all you have the stock pump pulling fuel out of the tank and sending it to the first pump....then the fuel has to go through another pump to finally get to the fuel rail?
Whats the advantage? The pumps can only put up so much fuel pressure and can only flow so much fuel!
Why does having 2 in-line with one another matter?
Or am I completly missing the point.
To me it makes no sense, first of all you have the stock pump pulling fuel out of the tank and sending it to the first pump....then the fuel has to go through another pump to finally get to the fuel rail?
Whats the advantage? The pumps can only put up so much fuel pressure and can only flow so much fuel!
Why does having 2 in-line with one another matter?
Or am I completly missing the point.
01-12-2006, 03:01 PM
#4
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Join Date: Apr 2002
Location: VA
Posts: 2,532
It kind of makes sense. Just think of the second pump as a booster pump for the first. Should work to keep up pressure in the line under any load, up to the pumps rated flow. Of course, the same thing could be achieved with properly sized fuel line and a pump sufficient to supply the engine.
01-12-2006, 03:20 PM
#5
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Join Date: May 2002
Location: California
Posts: 22,465
Originally Posted by R.P.M.' post='793590' date='Jan 11 2006, 10:34 PM
Whats the deal with hooking up two Bosch fuel pumps in-line with each other?
To me it makes no sense, first of all you have the stock pump pulling fuel out of the tank and sending it to the first pump....then the fuel has to go through another pump to finally get to the fuel rail?
Whats the advantage? The pumps can only put up so much fuel pressure and can only flow so much fuel!
Why does having 2 in-line with one another matter?
Or am I completly missing the point.
i dont really get it either, but every german car is like that. prolly just cause its more money
01-12-2006, 09:40 PM
#6
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Join Date: Dec 2004
Location: Kitchener Ont Canada
Posts: 219
LOL so thats why VW's and Audi's are so expensive....
Say I mount one of these in-line Bosch pumps closer to the engine like on the fire wall or where the stock fuel filter is on the FC's (close to the starter), and use the stock N/A fuel pump as a booster pump?
You think it would be alright?
Say I mount one of these in-line Bosch pumps closer to the engine like on the fire wall or where the stock fuel filter is on the FC's (close to the starter), and use the stock N/A fuel pump as a booster pump?
You think it would be alright?
01-17-2006, 10:44 AM
#7
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Join Date: Oct 2003
Location: Boston Ma.
Posts: 1,420
Originally Posted by R.P.M.' post='793839' date='Jan 12 2006, 10:40 PM
LOL so thats why VW's and Audi's are so expensive....
Say I mount one of these in-line Bosch pumps closer to the engine like on the fire wall or where the stock fuel filter is on the FC's (close to the starter), and use the stock N/A fuel pump as a booster pump?
You think it would be alright?
Say I mount one of these in-line Bosch pumps closer to the engine like on the fire wall or where the stock fuel filter is on the FC's (close to the starter), and use the stock N/A fuel pump as a booster pump?
You think it would be alright?
01-24-2006, 11:17 PM
#9
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Join Date: Dec 2005
Location: Oregon
Posts: 407
Kinda like if ya look at the crapy MSD fuel pumps on ebay. They were ment to be a "booster pump" for the stock one in the tank... The MSD pump are ment to be mounted lower then the fuel and close to the tank...