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> Converting to Carbs, What is a good setup for F Pump and Pressure
falconfp2001
post Mar 24 2011, 02:57 PM
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I'm gonna setup dual carbs and would like to use the stock Fuel Pump but I'm trying to figure out how to setup the Pressure Regulators.

My idea is to keep my return line to the gas tank and just have two regulators. One before the carbs and another after.

Anyone have a good suggestion?


Thanks
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jmill
post Mar 24 2011, 04:02 PM
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If I were you I'd save a ton of cash and get a CB Performance pump which is internally regulated at 3 1/2 psi. Place it in the front below the tank with a filter before it and place a filter in the engine compartment before the carbs.

With that said, I've run a holley pump and a regulator and it worked fine. If you look at the price of the pump, regulator and gauge and compare it to the cost of the CB pump, your money ahead with the CB.

BTW - Holley makes a one in two out regulator.
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dirk9141973
post Mar 24 2011, 04:29 PM
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(IMG:style_emoticons/default/idea.gif) Ok think this out little bit ? Sell the old working fuel pump on e-bay $ 100 +/- purchase correct fuel pump $ 75 relocate fuel pump to front under gas tank use the return fuel line a wireing path and take your wife to dinner with the $25 !!
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jjackson
post Mar 24 2011, 05:04 PM
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(IMG:style_emoticons/default/agree.gif) Ran CB pump for years on several motor combinations.Never had a problem.Not a fan of facet pumps.J
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jt914-6
post Mar 24 2011, 05:15 PM
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As has been said....get a CB pump up front with a filter between the tank and pump...one near the carbs....Holly regulator with gauge.....here's my Holly reg./gauge....although it's on a six the same would apply for a dual carb four....

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Cap'n Krusty
post Mar 24 2011, 06:10 PM
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We have a name for people who use the stock FI pump and a regulator with carburetors. We call 'em "fire victims". It's in your best interest not to become one.

The Cap'n
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moparrob
post Mar 24 2011, 08:53 PM
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I went with the Holley 125 low pressure pump and their matching regulator. Check Summit or Jegs for best prices.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i954.photobucket.com-11663-1301021620.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i954.photobucket.com-11663-1301021620.2.jpg)

Not cheap but dependable and quiet.
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Elliot Cannon
post Mar 24 2011, 08:58 PM
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CB Performance rotary pump. "Works fine, lasts a long time". (With appologies to Pratt and Whitney). (IMG:style_emoticons/default/laugh.gif)
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Elliot Cannon
post Mar 24 2011, 09:00 PM
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QUOTE(Cap'n Krusty @ Mar 24 2011, 05:10 PM) *

We have a name for people who use the stock FI pump and a regulator with carburetors. We call 'em "fire victims". It's in your best interest not to become one.

The Cap'n


(IMG:style_emoticons/default/agree.gif) Totally. Hell, I have to agree with the Cap'n. He's been working on these things for 75 years! (IMG:style_emoticons/default/first.gif)
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jmill
post Mar 24 2011, 09:18 PM
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QUOTE(moparrob @ Mar 24 2011, 09:53 PM) *


(IMG:http://www.914world.com/bbs2/uploads_offsite/i954.photobucket.com-11663-1301021620.1.jpg)




Very sweet setup. I like the billet pump. I'll have to keep this in mind when I get the 6 running. At 110 GPH it's overkill for a stockish 4 cylinder.
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NJ914Guy
post Mar 24 2011, 09:28 PM
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My shop is just wrapping up my 1973 2.0. Went with dual Weber 40 IDF carbs with Redline linkage and manifolds + CB Performance 40mm velocity stacks. We are running 3psi with a Facet fuel pump up front under the gas tank mounted on rubber stops and a Holly fuel regulator in the engine compartment. Also did full stainless fuel lines with dual filters, one at the pump and a second before the carbs. Shakedown runs were today and she is running excellent. Also did the throttle pedal bushings and a new throttle cable. Good luck with your project.
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jmill
post Mar 24 2011, 09:45 PM
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Had a Facet on a dual carbed high reving 1914 cc VW motor. The Facet couldn't supply the needed fuel volume at sustained high RPM. The $64 for a CB rotary was a lot cheaper than burning up my engine. I would be surprised if you didn't have similar issues with a 2 liter.
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falconfp2001
post Mar 25 2011, 02:10 AM
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Think I like this Regulator

I also like the Holley pumps but they are pretty steep in price.


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NJ914Guy
post Mar 25 2011, 05:33 AM
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Yep, heard good and bad about the Facet and CB Rotary pumps. My Facet was making about 7-8psi, hence the regulator to neck it down to three. For what it's worth, she ran great on some back roads and also a 20min highway run at up to 85mph.

I understand that the Facets can click and sound loud and that the CBs have a tendency to make you reach for your AAA card and walk home. We had the electric fuel pressure gauge hooked up and got consistent 3psi in conjunction with the Holley regulator during our test drive. Also, once primed and flat four running, I can't hear the pump running.
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jimkelly
post Mar 25 2011, 05:47 AM
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would 30 gph be ok for my V8 ??


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Root_Werks
post Mar 25 2011, 07:06 AM
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QUOTE(jimkelly @ Mar 25 2011, 04:47 AM) *

would 30 gph be ok for my V8 ??


Jim, hopefully not your current set-up. That pump seems really high in relation to the fuel tank.

I have no idea about the 30gph thing on a 300ft lb tq + motor.
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jimkelly
post Mar 25 2011, 01:17 PM
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ok - i should have said - i have this friend who parks his V8 914 in my garage : (

maybe i need this ...

http://www.jegs.com/i/Holley/510/12-802-1/10002/-1

jim
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McMark
post Mar 25 2011, 03:58 PM
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I prefer to go with a higher end pump and a quality regulator. Perhaps it's false security, but I do feel better about being able to adjust my fuel pressure.
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Ericv1
post Mar 25 2011, 04:11 PM
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QUOTE(NJ914Guy @ Mar 25 2011, 07:33 AM) *

Yep, heard good and bad about the Facet and CB Rotary pumps. My Facet was making about 7-8psi, hence the regulator to neck it down to three. For what it's worth, she ran great on some back roads and also a 20min highway run at up to 85mph.

I understand that the Facets can click and sound loud and that the CBs have a tendency to make you reach for your AAA card and walk home. We had the electric fuel pressure gauge hooked up and got consistent 3psi in conjunction with the Holley regulator during our test drive. Also, once primed and flat four running, I can't hear the pump running.


That's a real world scenario. I'm sorting out my six conversion and I bought a CB pump at the beginning of last year. On Wednesday evening (this week) My fuel pump went out about 9 tenths of a mile from my house. I was on a hill otherwise I would have pushed it home. The pump was only used maybe 10-15 times in small intervals to help tune the carbs. I was hoping it was a relay. I pulled both relays out of the headlights and replaced them on the rear circuit board but it was a no go. I can't be to pissed off because it was only $60. But, now I have to pull the gas tank and replace it again.
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nathansnathan
post Mar 25 2011, 04:12 PM
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From my experience with rotary pumps, they say they are high volume low pressure, that they will give you 3 1/2 psi unregulated, but the actual is more like 5 or so, more than enough to get by a lot of inlet valves. I've got a carter rotary pump and the holley regulator, plus vdo in compartment gauge.

(IMG:http://www.914world.com/bbs2/uploads_offsite/images.thesamba.com-11782-1301091217.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/images.thesamba.com-11782-1301091219.2.jpg)

That's my type 4-engined bus there, as the 914 is fuel injected still.
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