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Re: What Fuel Pressure on Dellorto's???
Home away from home
Joined:
2002/3/7 19:42
From Little Rock, AR
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Posts: 639
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Well I spent a pretty penny and got the Holley Red fuel pump, a low pressure regulator, new filter, and lines. I found some websites advertising not going over 4 psi on the Dellorto's, so I'm running about 3.5 or so and not having any problems. I couldn't find a place to put the fuel pump near the tank, so I installed it at the very bottom of the right front strut tower, below where the original fuel filter went. Gravity still seems to feed it where it's at, so I don't think I'll run into any problems. Anyway, I went from the stock 1/4" fuel line going into the pump, to 5/16" coming out of the pump to the regulator, filter, and carbs. The pump is rated to like 7-9 psi and 95 gallons per hour, less with the smaller line and regulator, but still way better than stock. I noticed a nice difference in power and driveability with this new setup. I've still got to get a blanking plate and remove the old mech. pump, which will free up a little horsepower as well, but it pulls a lot harder through all rpm's, most notably mid range (3500-6500). I'd recommend tossing the stock mech. pump for a setup like this to anyone, it runs great! And there's no black smoke or over-richness either...A/F ratio guage stays in the richer part of ideal (stoich) at full throttle. I want to take it to a quarter mile track to see the difference really bad...it'll probably be a couple weeks before I can do that, but I'd guess low 16/ high 15's. Last year with same setup minus lightweight flywheel, heavy duty clutch, dual valve springs, exhaust cutout and electric fuel pump it ran 16.5 and it feels much stronger now than it was then. We'll see!

-Andy

Posted on: 2003/5/1 19:12
Transfer the post to other applications Transfer

Subject Poster Date
     What Fuel Pressure on Dellorto's??? AFRacer 2003/4/24 21:11
       Re: What Fuel Pressure on Dellorto's??? Dragongoose 2003/4/25 3:18
         Re: What Fuel Pressure on Dellorto's??? ddgonzal 2003/4/25 8:02
           Re: What Fuel Pressure on Dellorto's??? AFRacer 2003/5/1 19:12
             Re: What Fuel Pressure on Dellorto's??? ddgonzal 2003/5/2 5:48
               Re: What Fuel Pressure on Dellorto's??? AFRacer 2003/5/7 2:03
                 Re: What Fuel Pressure on Dellorto's??? ddgonzal 2003/5/7 3:08
                 Re: What Fuel Pressure on Dellorto's??? feral 2003/5/7 9:40




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