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fuel pressure

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Ramzilla View Drop Down
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Joined: Jan/28/2019
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ramzilla Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 57 minutes ago at 7:40am
Good idea about return line. Only thing is that means I have to drop tank to hook up extra lines. Looks like a lot of undercoating around tank and straps. I looked inside with camera tank looks clean because of that I did not think I would need to drop and clean inside. No fuel inside since 1979. I did search about Bypass Regulators. Summit has one that has one inlet two outlets one return and one for gauge. What pressure electric pump would I need to push fuel back out the return line? Carbs only need about 5 to 6 lbs. Not sure exactly how extra pressure pump I need to use for returns. Also I saw post about Vent line so tank does not build up pressure. WOW a lot to think about. Thanks for input. Ramzilla     
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wheelz View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wheelz Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 9 minutes ago at 8:28am
You dont need electric pumps unless running fuel injection imo. I am running a fuel cell in the trunk to a Fram canister filter mounted to rear frame then 1/2 aluminum hardline to a Robbmc 550 mechanical pump. It feeds both carbs without issues or regulators or return lines
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PHAT69AMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: 12 hours 54 minutes ago at 12:43pm
On the Holley web page they have a rather lengthy Carbureted Fuel System Bypass Regulator write up...

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bobsterfl View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bobsterfl Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 44 minutes ago at 5:53pm
Lots of great info here.  For what it's worth, I knew that my Javelin would be sitting for long periods of time, so I installed an electric Carter pump near the tank so I would not have to crank the engine too long.  The pump is wired to an "ignition on" source, so I simply turn the key to on for 15-20 seconds to allow fuel to fill the carb, pump the gas twice, and off we go!  I also installed a Mallory pre-luber oil pump for the same reason.  It also comes on with "key on" but has a self timer that shuts off after some number of seconds, and , yes, I can see the oil pressure come up on the gauge.  So, for cold starts, I have both the oil system and the fuel system primed and ready to go.  I don't believe Mallory makes this oil pump any longer, but there are some remote oil pumps on the market for turbo applications that might work.
Bobsterfl
1970 BBO Javelin
390 - Torqueflight
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