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Edelbrock carb install? Can i use rubber fuel line?

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  • Edelbrock carb install? Can i use rubber fuel line?

    I'm installing an Edelbrock 1409 carb and a 2104 Intake on my 1989 305 mercruiser. Rather then mess with rebending the steel fuel line and buying adapters, can i use a small part of rubber fuel line? The old Q-jet had the fuel inlet in the front of the carb and the Edelbrock has the fuel inlet at the rear of the carb. Thought it would be easier to just use a 3 to 4" piece of rubber fuel line to make this conversion. I was to make sure the boat is both safe and will be coast guard approved. Thanks in advance.
    "2 strokes", get it done in half the time!


  • #2
    Re: Edelbrock carb install? Can i use rubber fuel line?

    You can buy premade steel braided line for very reasonable cost....
    Just another moron with a computer and too much time on his hands...

    typical rainy afternoon on the river... http://www.youtube.com/watch?v=8Izi3v75jTs

    more recent, amateur camera operator for sure!... http://www.youtube.com/watch?v=EHoXsQc6644

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    • #3
      Re: Edelbrock carb install? Can i use rubber fuel line?

      Nope, you need to bend up some new steel line.
      just because you found it that way does not mean it is supposed to be that way.

      Comment



      • #4
        Re: Edelbrock carb install? Can i use rubber fuel line?

        I did a 2 barrel to 4 barrel carb swap about yr ago and went with stainless braided line. But I think a short section of marine fuel rubber fuel hose is OK with USCG requirements. Not 100% sure though.

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        • #5
          Re: Edelbrock carb install? Can i use rubber fuel line?

          Originally posted by mikeneal View Post
          I did a 2 barrel to 4 barrel carb swap about yr ago and went with stainless braided line. But I think a short section of marine fuel rubber fuel hose is OK with USCG requirements. Not 100% sure though.
          My suggestion is to avoid rubber fuel line on the pressure side of the pump. I'm not sure of the USCG requirement, but prefer to er on the side of caution for this. Sierra sells the braided line you want.

          James

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          • #6
            Re: Edelbrock carb install? Can i use rubber fuel line?

            I ended up getting a pre made line from Spectre P/N 29883. It screws right into the carb and drops down 90 degrees. It also has a connection for a fuel pressure gauge. From there chop and reflare the stock line and it screws right in.
            "2 strokes", get it done in half the time!

            Comment



            • #7
              Re: Edelbrock carb install? Can i use rubber fuel line?

              Originally posted by mikeneal View Post
              But I think a short section of marine fuel rubber fuel hose is OK with USCG requirements. Not 100% sure though.
              Pressure fuel lines (after the fuel pump) can't be rubber hose, not even little ones.
              From Mercruiser:
              Anyone who uses a service procedure and/or tool, which is not recommended by the manufacturer, first must completely satisfy himself that neither his nor the product’s safety will be endangered by the service procedure selected.

              Comment



              • #8
                Re: Edelbrock carb install? Can i use rubber fuel line?

                Pressure fuel lines (after the fuel pump) can't be rubber hose, not even little ones.
                Yes they can. From Federal Law 183.558 - Hoses and connections

                "If a hose is used in the fuel line running between the fuel pump and the carburetor, the hose must be “USCG Type A1” and so labeled as required by 183.540. This requirement is applicable whether the fuel pump is engine mounted or mounted remotely from the engine, as permitted by 183.566.

                This requirement does not apply to a tube used to detect fuel pump diaphragm failure."

                Comment



                • #9
                  Re: Edelbrock carb install? Can i use rubber fuel line?

                  On my engine I used the A1 hose as mentioned above with no problems. My boat got "randomly" searched memorial day weekend with a long checklist from the USCG out of Cleveland and they said everything was perfect and even issued me a little decal to put on my window to show that I passed if I ever encountered this inspection again. The check the carb install, carb marine number, flame arrestor (Had the KN and they looked for the numbers on that as well) Other then that all went good.
                  90 Chaparral 2150SX 350 MAG Alpha 1
                  Vortec Heads, LT4 HotCam Upgrade
                  GM BowTie 1.6 Roller Rockers
                  Edelbrock RPM Air-Gap Intake
                  Edelbrock 600CFM Marine Carb * New MPH* 65.2
                  Laser II 21 Prop 5400 RPM's Corsa Exhaust

                  Comment



                  • #10
                    Re: Edelbrock carb install? Can i use rubber fuel line?

                    Got it all wrapped up today and had a chance to hit the key. Distrubutor was off even though i marked it. Follow up later. The throttle lever on the edlebrock is a tad forward. I just driled out the other throttle lever hole on the cable and made adjustments for now. Unreal, it was a hit the key and run swap. So far i love that carb. The draw back i found was the stock fuel line fitting for the carb was too short so it didn't bottom out into the spectrem fuel line. Caused a leak. I found fittings just to run the motor. However i don't leak the added 3 fittings where fuel can leak on the motor so tomorrow if i have time i'm getting a new steel line or swapping to braided rubber line.

                    Off topic: when i pulled the distributor i had the engine at TDC compression and the rotor in the dist. was pointed at #1. I marked the dist base inline with the rotor and also eyeballed the rotor and marked it on the valve cover. The battery was disconnected prior to the dist. removal and upon the reinstall, my rotor want to point more forward the it was upon removal. WTF? I got it fired up but i can't time it cause the dist is maxed out against the coil. I can't move it any further cause the lower vent on the dist bumps the coil. I'm not gonna move the coil to fix. I need to figure what happened here. Any ideas?

                    BTW, the motor runs nice, but edlebrock claims no more then 6-7 PSI on the fuel pressure. I have 8 to 9. they say this can cause a problem when you chop the throttle. 1 pound, really? Not sure. If it will i will install a fuel pressure regulator. Just don't want to put money where it's not needed.
                    "2 strokes", get it done in half the time!

                    Comment



                    • #11
                      Re: Edelbrock carb install? Can i use rubber fuel line?

                      Originally posted by mudweiser View Post
                      BTW, the motor runs nice, but edlebrock claims no more then 6-7 PSI on the fuel pressure. I have 8 to 9. they say this can cause a problem when you chop the throttle. 1 pound, really? Not sure. If it will i will install a fuel pressure regulator. Just don't want to put money where it's not needed.
                      get the regulator. look at it this way. that is up to 50% more pressure than expected. You will blow past the float and flood your system. If this was a car you could just wait until you smelled the fuel, on the boat you will flood your motor and be stuck high and dry.

                      Originally posted by mudweiser View Post
                      Off topic: when i pulled the distributor i had the engine at TDC compression and the rotor in the dist. was pointed at #1. I marked the dist base inline with the rotor and also eyeballed the rotor and marked it on the valve cover. The battery was disconnected prior to the dist. removal and upon the reinstall, my rotor want to point more forward the it was upon removal. WTF? I got it fired up but i can't time it cause the dist is maxed out against the coil. I can't move it any further cause the lower vent on the dist bumps the coil. I'm not gonna move the coil to fix. I need to figure what happened here. Any ideas?
                      remember the gears on the distributor are "slanted", so if you want the rotor to be at 12:00, you have to slide the rotor back to 10:30 and then slide it down. it will move as you drop it the last 3/4".

                      Good luck

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                      • #12
                        Re: Edelbrock carb install? Can i use rubber fuel line?

                        In my country there is not laws about transformations or conversions about engines running at sea.So when i needed new hoses i needed ruber ones which i could easily find in the local market.Next season i found out that the metalic hoses grounded the fuel filter and its base.I don't know if it was dangerous.In theory maybe yes.Maybe a cause of static electricity and fire? At least i grounded with a wire the filter.

                        Comment



                        • #13
                          Re: Edelbrock carb install? Can i use rubber fuel line?

                          Originally posted by 180shabah View Post
                          Yes they can. From Federal Law 183.558 - Hoses and connections

                          "If a hose is used in the fuel line running between the fuel pump and the carburetor, the hose must be “USCG Type A1” and so labeled as required by 183.540. This requirement is applicable whether the fuel pump is engine mounted or mounted remotely from the engine, as permitted by 183.566.

                          This requirement does not apply to a tube used to detect fuel pump diaphragm failure."
                          Thank for looking this up. It is good to know the rules since opinions sometimes differ. Personally I see no reason using rubber fuel line providing it is approved and meets the spec. In some cases rubber is better, since it will not crack from vibration. Have seen it happen before, steel line cracks, and what was the fix after it happened twice, replace it with a rubber section. This was in an automotive application.

                          Have a great day

                          Rob.

                          Comment



                          • #14
                            Re: Edelbrock carb install? Can i use rubber fuel line?

                            At least a short section of rubber hose is required for the transition between "boat" and "engine" for just that reason.

                            Comment



                            • #15
                              Re: Edelbrock carb install? Can i use rubber fuel line?

                              When I did my swap, I used Edelbrocks steel line that is used on their performer carbs that goes from the carb, down, and to the front of the motor. I only have about 16in of A1 hosethen from that to the fuel pump. Let me know if anybody wants a pic.
                              90 Chaparral 2150SX 350 MAG Alpha 1
                              Vortec Heads, LT4 HotCam Upgrade
                              GM BowTie 1.6 Roller Rockers
                              Edelbrock RPM Air-Gap Intake
                              Edelbrock 600CFM Marine Carb * New MPH* 65.2
                              Laser II 21 Prop 5400 RPM's Corsa Exhaust

                              Comment

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