DIY twin pumps on the quick and cheap
You can only run a hobbs switch if you are running boost right? I was going to install my new fuel system before I get my blower in. I was gonna pay about $500 for a dual intake set up but I see you can save a nice coin doing it yourself. So I just need the pumps, clamps, wires, connectors, heat sinks and a relay? What kind of relay? What about the first pump, I know the stock wiring isn't good enough so should I buy a hot wire kit for that one or should I just run my own and ignore the stock wiring? I figure I could just run one main power wire back there (maybe 12 gauge) and split it to each pump. Would that work or am I talking stupid?
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Good write-up. I have done this same thing on Call 911's car and will be doing this on my car also as my build progresses.
Question: You mentioned "goop" to seal up the hole drilled in the top of the cover. What exactly did you use? I wouldn't think RTV would hold up that well.
Question: You mentioned "goop" to seal up the hole drilled in the top of the cover. What exactly did you use? I wouldn't think RTV would hold up that well.
and just to make this thread useful for every year f body here is what to do if you have a 99-02 car.
After step 8 add these quick steps in for your bucket:
Cut out the bottom and sides of the bucket:
Then place both pumps together and run -6an line from each pump to the stock barb fitting, in this case i used a T-fitting because a large Y block like MM used will not fit in the 99-02 bucket.
In the end the bucket should look close to this with the fuel pump filters not sticking all the way out of the bottom of the bucket, if they do the feeds will be directly against the floor of the tank and pick up debris and hinder flow:
After step 8 add these quick steps in for your bucket:
Cut out the bottom and sides of the bucket:
Then place both pumps together and run -6an line from each pump to the stock barb fitting, in this case i used a T-fitting because a large Y block like MM used will not fit in the 99-02 bucket.
In the end the bucket should look close to this with the fuel pump filters not sticking all the way out of the bottom of the bucket, if they do the feeds will be directly against the floor of the tank and pick up debris and hinder flow:
Thank you sir, that's what I needed. For what it's worth, I've searched high and low for a low profile 90* bulkhead electrical connector like the stock piece is, with no luck. That would obviously be the best way to go, but yours is the most practical in the current state of not having a connector source.
Nice write up guys, just a heads up. When you cut out the plastic bucket on a street car, I wouldn't cut out the sides. Just pop a hole in the bottom (3/4 inch will be plenty) and don't hog out the entire bottom of the fuel bucket. The stock gas plastic tank isn't baffled right for this, so just having a hole in the bottom keeps the bucket full of fuel so the pump remains completely submerged when you are low on fuel and you make a few turns. And when you are running a little low on gas, when fuel sloshes around the pumps can briefly run dry which can cause sputtering etc. I speak from experience ...
Question I have an '00. Could I use two of the Racetronix's Plus Systems? Run the second harness to the second pump and then run both harnesses per the instructions? They say these pumps are pretty drop in and go. So, my system should not need any other modifications correct? This would probably be a good time to go to a bigger feed line as well? -8?