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  1. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Today I went out crabbing for 3 hours. No oil burn from yesterday and today. I’m going to install a catch can system to each valve cover vent tomorrow. The inside of the carb and vent hose are a little oily from the valve cover vents when running the motor hard. I usually cruise at 3000-3500...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    I’m having a weird problem with my oil. I can run the boat 3 days in a row and the oil on the dipstick stays the same. When I have it pulled out and it sits for five days or more the dip stick reads low at the add mark when back in the water. I’m using Volvo 25-45 non synthetic. Any ideas after...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    I didn’t change anything on the edelbrock 1409. I just adjusted the air mixture. So far so good.
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Follow up after putting 30+ hours on the new setup. The 5.7 runs like a top with the new Edelbrock 1409 and Walbro fuel pump. I’m guessing my fuel burn is around 10 gallons an hour running at 3000-3100 rpm 26 mph. So far so good. Again a big thanks to all the helped out!
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    It’s been a fun project. The 1409 was easy to get it dialed in. Now on to redoing the dash and flush mounting the chart plotter and depth sounder. Thanks again 🍻
  6. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Just a quick update. I got everything dialed in today. The choke is working good now that it’s getting 12 volts. It’s running so much better than before. Converting from TBI to the edelbrock 1409 is the best thing I could have done for this engine. No more chasing gremlins from the old...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Thanks Scott That’s what I was thinking. I added a 7 amp inline fuse and moved it to the ignition purple wire. I will check it out in the morning and see if the choke works better. Thanks again. Cheers!
  8. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    I have another question I wired the purple/white wire to the top left post per wiring diagram. Checking voltage. This post only puts out 7 volts to the choke. Holly And Rochester carbs only need 7 volts for the electric choke. The edelbrock 1409 needs 12-14 volts. Can I add the purple/white wire...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Installed the new Walbro FRB 13-2 fuel pump today.(nice pump) Ended up resealing all the fitting threads with Gasoila thread seal. The pump was noisy getting it primed. Once prime, it was really quite compared to the Carter.( I think I got a bad Carter pump). Ran the new setup for a 1/2 hour in...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    The outlets are outside of the area that is getting fuel in. The fittings aren’t leaking I double checked with a paper towel while the engine was idling. I pulled it and returned it. It was also really noisy. I had it mounted on 3/4” rubber spacers. I’m not taking any chance for a fuel leak. I...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Is there a better electric fuel pump than the Carter? I don’t like it that a brand new pump is leaking in my engine compartment. I have a replacement Carter pump coming. I may send it back and find a better pump.
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Permatex gas proof sealer Is this the wrong stuff for thread sealer? The threads are not leaking It’s the pump. If there is something better, please let me know. Thanks
  13. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Ran the engine in the driveway to check everything out before taking the boat out for a sea trial. After running for ten minutes I could smell I very faint gas odor. I shut everything off. The fuel pump is barely leaking (red arrow) where the motor canister is pressed on the inlet housing. I...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Thanks I haven’t touch the timing yet. Both the TBI and carb are set to 8 deg TDC. I will sea trail it and see what it does under a load.
  15. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    I didn’t use a bypass or blocking regulator. I’m using a Holley 12-803 set to 5lbs. Is this ok.
  16. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Thanks everyone for your help. I fired it up today. With a few adjustments to the carb at idle. Dialed in the fuel pressure to 5lbs. It runs great. The Carter fuel pump is loud. I will probably replace it with a better one in the spring. Not sure which pump is better for this application...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Thanks I will try that in the morning
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    One more question Does the fuel pump come on for a few seconds to prime the carb when you turn the key on like the throttle body pump did?
  19. C

    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Will I got everything installed and wired up today. Everything works but the fuel pump when you turn on the key. Attached is how I wired everything up using the new to me 2005 GL wiring harness and the attached schematic. I checked fuses. Swapped fuel pump relay. Still nothing. The relay...
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    Switching from Volvo TBI to Carb on a 1996 5.7 GI

    Thanks I will mount it where the old one was.
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