Kenne Bell boost-a-pumps for XJRs
#1
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If anyone is going the route of adding fuel capacity via the Boost-a-pump, the correct unit is KB89064 which is the true "dual" unit. It is the more expensive one $459 list and the one that is usually used on the Ford Mustang GT500
thought I would just post here to save others the trouble of getting the wrong one initially like I did...
thought I would just post here to save others the trouble of getting the wrong one initially like I did...
#2
#3
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Upping the voltage is a means of overcoming voltage drop due to deficient wiring or a means of spinning the pump faster. If it is a case of excessive voltage drop, then increasing the wire gauge would be sufficient. For 20 amps, no less than #12 gauge on each power and ground lead. Of course, this is ideally all the way to the pump connectors so it would involve fabricating new link leads for the inside tank connections.
#4
#5
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According to one reference chart, a 10 foot complete round trip circuit (power + ground) needs #14 AWG at 10A to limit voltage drop to 3 percent. It would be #16 AWG for 10 percent.
If we are generous and say that the existing wiring is #16 AWG, and that the relay is seeing 14.0v, then the pump is experiencing 14.0v-1.4v=12.6v
At #14 AWG, it would be 14.0v-0.42v=13.58v
At #12 AWG, the drop would be nominal for 10 amps.
If we are generous and say that the existing wiring is #16 AWG, and that the relay is seeing 14.0v, then the pump is experiencing 14.0v-1.4v=12.6v
At #14 AWG, it would be 14.0v-0.42v=13.58v
At #12 AWG, the drop would be nominal for 10 amps.
#6
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Electrics isn't my area, and although there are losses as you say, you need to up the voltage much more than you can recover by installing different wiring to cover for the losses (although as said, it depends on the pressure/flow you require). I wouldn't just put the BAP to the maximum 17.5 voltage either; set it to a voltage that sufficient for what you need.
PS I just installed a BAP, and iirc the outside tank wiring seems much thicker than a 16awg, would guess more a 14awg.
PS I just installed a BAP, and iirc the outside tank wiring seems much thicker than a 16awg, would guess more a 14awg.
Last edited by avos; 12-12-2012 at 02:23 AM.
#7
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Kenne Bell says:
" When do I need to look at wiring size?
When installing any larger/higher amperage than stock fuel pump(s). Any pump that produces more fuel will use more (amps) and tax the stock wiring. The BOOST-A-PUMP is designed to work with stock wiring. Only a larger fuse is necessary. "
" When do I need to look at wiring size?
When installing any larger/higher amperage than stock fuel pump(s). Any pump that produces more fuel will use more (amps) and tax the stock wiring. The BOOST-A-PUMP is designed to work with stock wiring. Only a larger fuse is necessary. "
Last edited by XJR-99; 12-12-2012 at 02:25 AM.
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WaterDragon (07-14-2013)
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been there done that and blew up some nice engines!
now, when i'm considering a hi-boost engine and fuel system, i use a 10ga. wire run directly from the battery, and a 50amp relay, thats uses the factory wiring to activate the relay. no more hi-boost F/P drop, with data recording.
you could wire in the circuit with a BAP without any problems.
ever considered a rising rate FPR alsop
now, when i'm considering a hi-boost engine and fuel system, i use a 10ga. wire run directly from the battery, and a 50amp relay, thats uses the factory wiring to activate the relay. no more hi-boost F/P drop, with data recording.
you could wire in the circuit with a BAP without any problems.
ever considered a rising rate FPR alsop
#10
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I am planning on adding the GT500 Boost a pump. Yes i WILL have a digital A/F gauge installed at the same time, no data logging, just a gauge.
Last edited by WaterDragon; 07-25-2013 at 10:09 PM.
#11
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been there done that and blew up some nice engines!
now, when i'm considering a hi-boost engine and fuel system, i use a 10ga. wire run directly from the battery, and a 50amp relay, thats uses the factory wiring to activate the relay. no more hi-boost F/P drop, with data recording.
you could wire in the circuit with a BAP without any problems.
ever considered a rising rate FPR alsop
now, when i'm considering a hi-boost engine and fuel system, i use a 10ga. wire run directly from the battery, and a 50amp relay, thats uses the factory wiring to activate the relay. no more hi-boost F/P drop, with data recording.
you could wire in the circuit with a BAP without any problems.
ever considered a rising rate FPR alsop
So this happened to you?? Please elaborate
Last edited by WaterDragon; 07-27-2013 at 10:48 PM.
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