4.5psi enough for Holley 465?
03-16-06, 04:04 PM
#1
4.5psi enough for Holley 465?
Looking to buy a Holley 465 carb setup and was wondering if 4.5-5psi will be enough to support this system. I have an Airtex e8012s pump that is rated 5-9psi @30gph. The max I am getting with this pump is ~4.5psi when the motor is running and about 5.5psi when it is off. I am using the FPR that I bought from "Kim's FB." I disconnectted the regulator and hooked the gauge only up to the fuel line and still got a reading of 5.5psi.
Thanks!
Justin
Thanks!
Justin
03-16-06, 04:32 PM
#2
do you know accurate the gauge is?
you should be able to get away with that pressure if it's giving you a high volume. if not, then you may experience some starvation issues. however, in my experiences thus far, i've usually found the need for at least 6 psi. it was the starvation issues that led me to get a Holley pump and it's still doing the job.
you should be able to get away with that pressure if it's giving you a high volume. if not, then you may experience some starvation issues. however, in my experiences thus far, i've usually found the need for at least 6 psi. it was the starvation issues that led me to get a Holley pump and it's still doing the job.
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03-18-06, 12:02 AM
#11
Do you have your system setup as a deadhead or return style? If you are running a return, take the stock fpr, the barrel shaped fitting in the return line and turn it around. That will make the system deadhead and bring your fuel pressure up.
03-18-06, 04:38 AM
#12
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6psi is suggested for all holleys far as i know..
return line isnt really needed, i've run without the FPR entirely without problems (waiting on a order for a new FPR) and the car ran the same. no noticable difference at all.
4.5 psi doesnt sound like enough. i'd make sure your pump is getting a proper 12v first, easy done with a voltmeter.
return line isnt really needed, i've run without the FPR entirely without problems (waiting on a order for a new FPR) and the car ran the same. no noticable difference at all.
4.5 psi doesnt sound like enough. i'd make sure your pump is getting a proper 12v first, easy done with a voltmeter.
