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| Engine Modifications Flat-fours and turbochargers are what set the WRX apart from the rest. Talk about them and the latest aftermarket parts here. |
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#1 (permalink) |
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Registered User
Join Date: Jan 2002
Location: California
Posts: 507
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My Twin Walbro 255 Fuel Pump Set up. Pictures and Info
I was tossing around the idea of either one 310 fuel pump or 2 walbro 255 fuel pumps. With alot of talking and researching i decided to go with two fuel pumps. Its cheaper, flows more, and is something i wanted to see if i could do. I talked with a few supra tuners and they told me how to do it. Basically this is it. I drilled a hold for the fuel feed and welded a tube to a fitting. Then sandwiched the fitting with a special washer, a nut, and some chemical proof silicon. I ran the wires through another hole and used silicon on both sides to seal it. The power Wires are relayed and hardwired to the battery. Each fuel pump is fused with a 20 amp fuse. The relay trigger switch is run off ignition with a switch inline to kill the power if need be. This set up will be pushing an extremely large amount of fuel. I have switch the fuel return line with the fuel feed line. Now the fuel returns to the tank using the larger feed line. The fuel pressure will be increase alot due to the small return line, but i can fine tune it with the fuel pressure regulator. I am sure some of you will have doubts, but i just tested it and it works.
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#9 (permalink) | |
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Registered User
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that is a very nice setup. My hat is off to you for your skills. How much psi are you expecting?
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#10 (permalink) |
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Registered User
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Shouldent the pressure be the same? Its just going to have a much higher volume...
Stealth, will both pumps be running full time? How is it wired? Im sure you already know to make its own curcuit so that if power is cut, they both die instead of underfulling on one pump. Also, are you going to use some sort of fuel cooler? Are you worried about fuel temps rising since its going to be recirculated so much? Sorry for so many questions, im just modding vicariously through your cool ass project.
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#14 (permalink) |
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Registered User
Join Date: Jan 2002
Location: California
Posts: 507
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I actually wanted to go with that one but for the money you cant go wrong. With all the lines, fittings and pumps I spent about $150 total. The aeromotive is $400. Plus the aeromotive only produces around 40lbs/hr more at 12v then my walbro's. I love the aeromotive pump though. I just need to budget my money.
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