Holley 98 Fuel Pressure
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Holley 98 Fuel Pressure
Posted: July 26 2007 07:58 PM
 
Jay Bourgraf (aka Jaybird) [ View ] [ jaybird@isoc.net ] [ Car Ads ] [ Blogs ]
Cincinnati, Ohio
(513) 941-7445
 
I need a sanity check. What kinda fuel pressure should we be running on a vintage Ford/Holley carb? We have 3 dueces on a 270 Dodge Red Ram Hemi that's giving us fits. 2 carbs are currently blocked off and we're running off the center carb. The regulator is set at 4 lbs right now. Doesn't want to run on anything less. We're trying not to run i too hight to avoid leaks.
 
 
Comments
 
Posted by 31tudor  -  07/26/2007 11:01 PM
About 2.5 to 3.0 lbs. I put about 6 lbs to my Ford/Holley and it was spewing fuel out of every single crevice in the sucker!
Eric Hibbs [ View ] [ Email ] [ Blogs ] [ Car Ads ] St. George, Utah Charter Member since January 2002
 
Posted by q1ap  -  07/26/2007 11:31 PM
I'm running an Automotion tri-power set up on a sbc 350/300, fuel pressure regulator is set for 4 lbs. That was the install directions from the builder and it runs great at that setting. What kinda of problems are you haveing? I did have a leaking problem and it was the fuel pressure rgulator, the diaphram had a hole in it. Got a Holley rebuild kit, replaced the spring and diaphram and that cured the problem. Also check the float and the needle and seat.
q1ap [ View ] [ Email ] [ Blogs ] [ Car Ads ] St. Augustine, Florida
 
Posted by JAWS  -  07/27/2007 09:34 AM
I think your about as high as you can go, maybe 4.5 psi. But that's with current holley stuff. I don't know for sure on the older carbs. I tend to agree with Eric on this one, I would think alot less since they were not ever meant for serious drag use nor did they need to flow serious amounts of fuel. I think that's the reason no one runs just one.....


I would check the gph to feed all three. You may not have a pressure issue as much as you may not have adequate fuel volume.
An electrical headache can make a great car a pain [ View ] [ Email ] [ Blogs ] [ Car Ads ] Boise, Idaho Charter Member since August 2004
 
Posted by 31tudor  -  07/27/2007 12:15 PM
Hey Jaybird, did you get all of that lane change damage repaired?
Eric Hibbs [ View ] [ Email ] [ Blogs ] [ Car Ads ] St. George, Utah Charter Member since January 2002
 
Posted by Jaybird  -  08/01/2007 06:50 PM
Eric.......funny you should ask. I'm waiting on the front rims. the left front wasbent bad. Inurance paid for it. I bought 2 just to do thinks right. just ordered new front rubber from gearworks. As soon as it all shows up, hopefully tomorrow, I can be back on the road and off to Louisville!!!!! Leon was right. I didn't think the car was hurt that bad. Then after inspecting it, wow, lotsa bent parts, crushed bearings etc.

We're still working this fuel issue on my friends car. We think that the regulator is junk. 2 in a row. It's one of those cheapie chrome click types from Bonezone. I'm gonna make him fork some bucks out for a good one at the Nationals this weekend. the first onesprung a huge leak as the car was coming out of the paint booth. Didn't go over real well with the painter!
Jaybird [ View ] [ Email ] [ Blogs ] [ Car Ads ] Cincinnati, Ohio Charter Member since December 2003
 
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