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Fuel System Flow Mod (Honda)
- Details
- Parent Category: Knowledge
- Category: Modification and Repair
- Created on Sunday, 20 February 2005 07:04
- Written by Matt
- Hits: 5137
| Easy fuel system modifications. |
| #1 Fuel line exiting the fuel filter |
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The Creative Fix Drill out the existing hole. I found that a 3/16" bit is just the right size to widen the hole without sacrificing structural integrity. |
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The new 3/16" hole will increase fuel flow efficiency by eliminating this bottle neck. I also drilled a 1/8" hole through the bolt on the opposite axis as the 3/16" hole to free up flow even more.
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#2 Fuel pump circuitry |
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No pictures, sorry. In short, if you were to put a volt meter on the circuitry at the fuel pump you would find a lower voltage then at the battery terminals with the car running (about 1.5 Volt loss). This is caused by relays and normal car wiring but translates into about a 7.5% loss in pumping efficiency. A quick mod is to run a 12 gauge wire directly from the +12v battery, through the switch side of a head light relay, and then to the pump. Run a new ground with 12 gauge wire to a GOOD grounding point. Hook the existing fuel pump +12 to the control side of the relay to turn it on when the ignition is turned on. This will allow the full amount of electrical flow to the pump. |
