That is an excellent idea, putting your fuel pressure gauge up where you can see it, I think. Might save you a lot f grief, down the line!

I know the Buick turbo guys I talk to use a second fuel pump to come on at higher boost values, but I think that for what I am going to need just one of these Walbro pumps can handle the requirement, nicely.

Tom Worfe (Shaker 223) recommended this pump to me and I think it's a dandy!

See it at: http://tinyurl.com/9rvojep


It's an external (not "in the tank",) inline oump that is smal, quiet, easy to install and has some impressive pumping capability, I think. It makes 60 psi, and pumps 255 liters per hour, plenty for 500 hp.

The best part is, it's sold at Summit for $113.00.

I'm not sure you can set up a second pump with all the complexity, extra fittings, and controls for that, including the cost of the pump.

Additionally, this 60psi capability will allow you to use a 3/8" (AN-6) supply line and not worry about volume issues. You WILL, however, need a regulator with return line capability. We tried a Mallory regulator (4309) and had trouble maintaining a consistent 6 psi with it, so opted for a more expensive Aeromotive unit, which seems to work OK. I have talked to people who use the Mallory with no issues at all, though, so maybe our attempt to uise a 3/8" return line was the source of out problem. We installed a half-inch return line along with the Aeromotive regsulator, and had no more problems.
See it at: http://tinyurl.com/8tolq27

I don't have the number for the Aeromotive unit right now, but can get it.

Theseare just some wuggestionjs for one way to go...

There are a million ways to do this...

Good luck. Recognizing that a problem exists goes a long way toeard fixing it!!!

Bill

I already have an aeromotive regulator with 3/8 feed and 3/8 return. I'm going to compare putting in a helper pump to come in at high boost opposed to replacing my Holley blue pump.

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Tyler, 19
72 Dart Swinger /6T

That'll probably work!!!

The pic. is about 6-7 years old. My current combo: Engine, 1971 engine that has been re-ringed and crank bearings replaced, cam, 0.440 lift intake 0.430 exhaust 114 LSA installed at 111. Head, milled 0.050, new thinwall bronze guides, oversized MP valves (I said this an old build!) I cut the 3 angle valve job, and mild port job myself. Offenhauser intake, holley 600 DP stock carter mechanical fuel pump modified with a boost referance port.a holley blue electric pump mounted in rear of car that feeds the front pump. The holley pump is controlled by a pressure switch that turns on under boost,it has a check valve to bypass it when not in use. IHI/borg-warner turbo off a 1995 chevy 6.5 diesel truck, the wastegate was modified to work by pressure instead of vacuum,it also opens during part throttle. the turbo is mounted to the stock exhaust manifold by a fabbed adapter,heat riser valve still functional.Vortech surge valve. Transmission 1973 904 non-lockup with 360 999 clucth drums installed, 999 front band, red eagle clutch discs, wide ratio gearset, Trans-go TF-1 shift kit,Turbo action "medium 10" torque converter, Ford type "F" fluid. I corected for transmission to engine run-out while it was apart,and I believe this is very important. Large yoke drive shaft 8 3/4 rear with 3.55 posi. Frozen boost air-water intercooler rated at 600 HP,and last,but most important homemade computerized water/alcohol system. I'm very sharp with electronics,and invented my own analog computer that moniters readings from my AEM wide ratio AFR gauge, and can adjust delivery of the water/alc. to maintain correct AFR while under boost. It also controlls the ece. fuel pump so it only comes on during WOT and starting. Best E.T. 13.86,best MPH 103.5

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V8?? We don't need no stink'n V8!!

Thanks for the info; that is a realy nice setup!

How much boost do you run, and how much does the car weigh with you in it?

Also, how much total spark advance works best for you?

Bill