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Re: Fuel flow thru reg?
[Re: Thumperdart]
#1453781
06/16/13 11:30 PM
06/16/13 11:30 PM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
OP
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OP
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Posts: 3,695
nc
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Quote:
Quote:
We just ran all new 1/2 inch line from the pump to the reg, fuel tank on top of pump with a straight drop about 10 to 12 inches to the pump feed which is 1/2 also. Removed all filters for the tests, Pump seems a bit louder than normal?
My pump made some horrible noises right before it locked up and burned down.......Which pump do you run? 
BG 280
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Re: Fuel flow thru reg?
[Re: emarine01]
#1453782
06/16/13 11:32 PM
06/16/13 11:32 PM
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Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto
Trophy Winner
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Trophy Winner
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
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Just buy the magnafuel 500, for the money difference its a no brainer. Your probably going to want to go faster at some point anyway.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Fuel flow thru reg?
[Re: Cab_Burge]
#1453789
06/17/13 10:16 AM
06/17/13 10:16 AM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
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nc
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I retested the BG 280 this morning and had the same results as yesterday, gal in 19 secs & 7 psi, I let it run dead headed @ 18 psi for 15 min and the pump motor was a little warm but not hot, amp draw was 13 to 14 @ 13.5 volts , pump still a bit loud, When testing I removed one flex line from the fuel log feeding the primary bowl, The fuel blasts out the line like a fire hose, This is a 6an flex line that y,s together after the reg, From looking @ the fuel flow I cant see how the float bowl cant maintain the level from the amount of fuel flowing out the line, took the needle out and checked for a clog, All looked good, Could it be that the float is not reacting fast enough? The old needles were .110 & I went back with .120s thinking the bowl would fill faster, The Holley reg has a .220 restriction the .120 needles x 2 =.240, The BG reg is larger but I don't know the size, The fuel log is attached to reg with a inside dia of .340 @ the entrance to the log than y,s off to the bowels, is this too small?, a # 8an line will flow more volume @ 7 psi, Its just hard to figure that this small block can need this much fuel, in the past the engine consumed 1 gal in the 4 mins we ran to make a pass, that's from the pits to staging, a 200ft blast and back around to the pits, That's been consistent for the past few years, Anyhow has anyone had a problem with a 6an fuel log being too small?
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Re: Fuel flow thru reg?
[Re: emarine01]
#1453791
06/17/13 11:29 AM
06/17/13 11:29 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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The #6 line wouldnt be the problem BUT the Y might be on the small side... all the AN fittings I use I normally drill them out some so its just inside the seating area 
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Re: Fuel flow thru reg?
[Re: bonefish]
#1453792
06/17/13 11:52 AM
06/17/13 11:52 AM
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Joined: Jan 2007
Posts: 3,695
nc
emarine01
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nc
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Quote:
my 520 ci. big block has 6an to the carbs and a holley big reg.it,ll run 9.30,s all day long with no prob.i have 120 needle and seat.
Is it 2 / 6an lines, one from each port from the reg, or one 6an split to 2 bowels?
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Re: Fuel flow thru reg?
[Re: emarine01]
#1453793
06/17/13 12:13 PM
06/17/13 12:13 PM
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Joined: Nov 2004
Posts: 7,274
s.w.fl
bonefish
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master
Joined: Nov 2004
Posts: 7,274
s.w.fl
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Quote:
Quote:
my 520 ci. big block has 6an to the carbs and a holley big reg.it,ll run 9.30,s all day long with no prob.i have 120 needle and seat.
Is it 2 / 6an lines, one from each port from the reg, or one 6an split to 2 bowels?
two seperate lines,one from each side of the reg.
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Re: Fuel flow thru reg?
[Re: Thumperdart]
#1453795
06/18/13 03:14 AM
06/18/13 03:14 AM
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Joined: Jan 2003
Posts: 2,932
Finalnd, Perkele
jyrki
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master
Joined: Jan 2003
Posts: 2,932
Finalnd, Perkele
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The restriction that all the fuel goes through in a basic Holley regulator is what, 1/16"? It is not enough to be able ot correctly feed todays high performance engines, I would say it's only good for about 600 hp. The old pro stockers didnät make that much power, and they had one reg for each carb.
Plynouth VIP '67 TT IC EFI
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Same thing on regulators 
This was nothing but a frustrating fire drill where the testing made no sense, Thankx to all for the help. 