Carb regulators
Carb regulators im getting close to fireing off my bbc ive been building and have been looking at a fuel system, kinda lost in regulator selection.. can someone explain multi port regulators as whats the reasoning for having a 5 port?? or recomend a regulator setup?? its a BBC all parts are set to run 3800 rpm and up. 1000cfm carb with a direct port n20 system. my carb is setup for #8 lines and has 2 - 3 way tees making for a inlet and outlet for a return. have a # 12 and # 8 fittings in the tank. the # 12 is going to run to a a-1000 pump > filter > regulator > carb and N20 > return back to tank. not sure what kind of regulator to get or how to run the lines off of it.. i see some regulators have the return comeing off them.. would it be better to cap off my tee on carb fuel line and run a return from regulator?? or run return off back of carb fuel line?? kinda lost
TECH Resident
Joined: Oct 2005
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#1-are you planning on running the nitrous system at the same fuel pressure as the carb?
#2-if so are you willing to give up the ability to tune the nitrous system with fuel pressure?
If the answer to 1 & 2 are yes the you should look at the Aeromotive 13202 6 port return regulator.
http://www.aeromotiveinc.com/pdetail.php?prod=18
You would plumb 2 ports to the fuel bowls, 2 ports to the fuel solinoids and the return out the bottom to the cell.
If you want to tune the nitrous fuel side pressure seperately then you'll need a dedicated fuel system, pump and regulator for the nitrous side and then use an Aeromotive 13204 for the carb.
http://www.aeromotiveinc.com/pdetail.php?prod=20
#2-if so are you willing to give up the ability to tune the nitrous system with fuel pressure?
If the answer to 1 & 2 are yes the you should look at the Aeromotive 13202 6 port return regulator.
http://www.aeromotiveinc.com/pdetail.php?prod=18
You would plumb 2 ports to the fuel bowls, 2 ports to the fuel solinoids and the return out the bottom to the cell.
If you want to tune the nitrous fuel side pressure seperately then you'll need a dedicated fuel system, pump and regulator for the nitrous side and then use an Aeromotive 13204 for the carb.
http://www.aeromotiveinc.com/pdetail.php?prod=20
On The Tree
Joined: Feb 2006
Posts: 159
Likes: 0
I am close to finishing up my bbc swap also.I already had the a1000 pump with the old 383 lt1 and plan to use the 13204 reg.I have a 10an feed and 8an return already for the engine,but plan to use a seperate pump,additional line and seperate regulator for my n20 when I add it. As said above,you will be able to fine tune that way 
Originally Posted by andereck
#1-are you planning on running the nitrous system at the same fuel pressure as the carb?
#2-if so are you willing to give up the ability to tune the nitrous system with fuel pressure?
If the answer to 1 & 2 are yes the you should look at the Aeromotive 13202 6 port return regulator.
http://www.aeromotiveinc.com/pdetail.php?prod=18
You would plumb 2 ports to the fuel bowls, 2 ports to the fuel solinoids and the return out the bottom to the cell.
If you want to tune the nitrous fuel side pressure seperately then you'll need a dedicated fuel system, pump and regulator for the nitrous side and then use an Aeromotive 13204 for the carb.
http://www.aeromotiveinc.com/pdetail.php?prod=20
#2-if so are you willing to give up the ability to tune the nitrous system with fuel pressure?
If the answer to 1 & 2 are yes the you should look at the Aeromotive 13202 6 port return regulator.
http://www.aeromotiveinc.com/pdetail.php?prod=18
You would plumb 2 ports to the fuel bowls, 2 ports to the fuel solinoids and the return out the bottom to the cell.
If you want to tune the nitrous fuel side pressure seperately then you'll need a dedicated fuel system, pump and regulator for the nitrous side and then use an Aeromotive 13204 for the carb.
http://www.aeromotiveinc.com/pdetail.php?prod=20
6 & 8 Second Club
Joined: Aug 2006
Posts: 2,284
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From: Illinois, RT 66 dragway area
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I also use a 4 port regulator for the carbs and a separate reg for each stage of N2O.
I use the Holly 500 pump for both and haven't ran lean yet. I like to have some tuning with the N2O without messing with the carbs pressure.
Never seen anyone use a fuel log, can't help with that.
How much does that thing pump, u might not need 2 pumps, if we can feed a 706" BBC with 2 stages with one pump, u might be fine with 1 also. Good luck.
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I also use a 4 port regulator for the carbs and a separate reg for each stage of N2O.
I use the Holly 500 pump for both and haven't ran lean yet. I like to have some tuning with the N2O without messing with the carbs pressure.
Never seen anyone use a fuel log, can't help with that.
How much does that thing pump, u might not need 2 pumps, if we can feed a 706" BBC with 2 stages with one pump, u might be fine with 1 also. Good luck.
.
TECH Resident
Joined: Oct 2005
Posts: 787
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MrDragster, you have a dead head system (besides a pump bypass) and smokin2002 has a return system. The A1000 has to operate as a return fuel system and you can only have one basic pressure in a return system. You could set the nitrous system at a lower pressure than the carburetor, but not higher basically rendering the system untuneable with fuel pressure.
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6 & 8 Second Club
Joined: Aug 2006
Posts: 2,284
Likes: 0
From: Illinois, RT 66 dragway area
.
I actually have a dual return system, the pump and each regulator.
We build it with a gauge adapter and a N2O jet fitting, it keeps all air and creep out of the fuel system. You can sit there all day and the fuel hitting the noids is rock solid. The way I designed my system, u can have all 3 regulators at a different pressure, and all 3 stay dead on. I never had good luck with return style regulators, so when I saw this style, I tried it.
I copied a design from a Pro-Mod guy that bought a fancy fuel system from magna-flow.
I asked, because I heard those pumps were very good, but I don't know anything about it. Info is always good, thanks.
Bio-diesel & alcohol needs our support!!
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I actually have a dual return system, the pump and each regulator.
We build it with a gauge adapter and a N2O jet fitting, it keeps all air and creep out of the fuel system. You can sit there all day and the fuel hitting the noids is rock solid. The way I designed my system, u can have all 3 regulators at a different pressure, and all 3 stay dead on. I never had good luck with return style regulators, so when I saw this style, I tried it.
I copied a design from a Pro-Mod guy that bought a fancy fuel system from magna-flow.
I asked, because I heard those pumps were very good, but I don't know anything about it. Info is always good, thanks.
Bio-diesel & alcohol needs our support!!
.
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Verdad Gallardo TECH Resident
Joined: Oct 2005
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Originally Posted by mrdragster1970
.
I have a dual return system, the pump and each regulator.
We build it with a gauge adapter and a N2O jet fitting, it keeps all air and creep out of the fuel system. You can sit there all day and the fuel hitting the noids is rock solid.
I copied a design from a Pro-Mod guy that bought a fancy fuel system from magna-flow.
I asked, because I heard those pumps were very good, but I don't know anything about it. Info is always good, thanks.
Bio-diesel & alcohol needs our support!!
.
I have a dual return system, the pump and each regulator.
We build it with a gauge adapter and a N2O jet fitting, it keeps all air and creep out of the fuel system. You can sit there all day and the fuel hitting the noids is rock solid.
I copied a design from a Pro-Mod guy that bought a fancy fuel system from magna-flow.
I asked, because I heard those pumps were very good, but I don't know anything about it. Info is always good, thanks.
Bio-diesel & alcohol needs our support!!
.
6 & 8 Second Club
Joined: Aug 2006
Posts: 2,284
Likes: 0
From: Illinois, RT 66 dragway area
.
Sounds like u have seen what I copied. I use 30 & 32 N2O jets, because that's what I had laying around extra. If u know, what were they using, maybe I'm too big or small?? Thanks.
.
Sounds like u have seen what I copied. I use 30 & 32 N2O jets, because that's what I had laying around extra. If u know, what were they using, maybe I'm too big or small?? Thanks.
.
Last edited by mrdragster1970; Apr 8, 2007 at 09:43 AM. Reason: spelling
