Bruno2 Posted April 3, 2018 Share Posted April 3, 2018 How many PSI does a factory 351W fuel pump pump make? I am wondering if I need to add a regulator to my set up for Jr? I will be running an Edelbrock carb and they like a lower amount of pressure than other carbs do. I havent put much thought into it, but I am even wondering if a stock pump will supply enough fuel to keep the mild build fed? Surely it will. The carb is a 650 CFM unit. The cam is pretty mild and the heads are comparable to factory GT 40's. Link to comment Share on other sites More sharing options...
Bruno2 Posted April 3, 2018 Author Share Posted April 3, 2018 I was looking at this one: https://www.ebay.com/itm/Carter-404-501HP-Fuel-Pressure-Regulator/172612219856?epid=227269341&hash=item28307d73d0:g:5PMAAOSwEK9W~r~i&vxp=mtr I like edelbrock, but they are like 3X's this amount. I had a bad experience with Summit's house brand which was in fact a Holley. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 3, 2018 Share Posted April 3, 2018 I think a factor pump goes to maybe 7 psi, which is more than an Eddy likes, which is a max of 6 psi. But, before you worry about that let me check the factory shop manual later this morning. And, don't you have a fuel pressure regulator on the Bronco? In any event, I'm pretty sure that a stock pump will feed that engine just fine. The design for the pump is the same as for the 460. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 3, 2018 Share Posted April 3, 2018 I was looking at this one: https://www.ebay.com/itm/Carter-404-501HP-Fuel-Pressure-Regulator/172612219856?epid=227269341&hash=item28307d73d0:g:5PMAAOSwEK9W~r~i&vxp=mtr I like edelbrock, but they are like 3X's this amount. I had a bad experience with Summit's house brand which was in fact a Holley. Oh, so the Holley gave you problems? I don't think I'd heard about that. That Carter sure looks like the Holley. Link to comment Share on other sites More sharing options...
Bruno2 Posted April 3, 2018 Author Share Posted April 3, 2018 I think a factor pump goes to maybe 7 psi, which is more than an Eddy likes, which is a max of 6 psi. But, before you worry about that let me check the factory shop manual later this morning. And, don't you have a fuel pressure regulator on the Bronco? In any event, I'm pretty sure that a stock pump will feed that engine just fine. The design for the pump is the same as for the 460. The Bronco does have one and will need it to run ... eventually. I bought a Holley pump and it wouldnt hardly make 2 PSI. I think that was the issue and not the regulator. So that post may be inaccurate. Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 3, 2018 Share Posted April 3, 2018 The Bronco does have one and will need it to run ... eventually. I bought a Holley pump and it wouldnt hardly make 2 PSI. I think that was the issue and not the regulator. So that post may be inaccurate. I've not had trouble with the Holley regulator I have on Big Blue. And, it was on Rusty before I sold him. Seems to work fine. You could put the regulator/gauge combo from the Bronco on this engine and at least see what pressure the pump puts out. If you don't need it, take it off. If you do, leave it on and buy another one when the Bronco "eventually" comes to life. Link to comment Share on other sites More sharing options...
reamer Posted April 3, 2018 Share Posted April 3, 2018 I've not had trouble with the Holley regulator I have on Big Blue. And, it was on Rusty before I sold him. Seems to work fine. You could put the regulator/gauge combo from the Bronco on this engine and at least see what pressure the pump puts out. If you don't need it, take it off. If you do, leave it on and buy another one when the Bronco "eventually" comes to life. My NAPA mechanical fuel pump was pushing over 10psi to my Eddy 600cfm, making for hard "hot" starts. Had to install a regulator (I set it to 7psi) worked great all last season, (even running past 85 mph, LOVE the overdrive ZF).......and fired up first try this season.... Link to comment Share on other sites More sharing options...
Bruno2 Posted April 3, 2018 Author Share Posted April 3, 2018 My NAPA mechanical fuel pump was pushing over 10psi to my Eddy 600cfm, making for hard "hot" starts. Had to install a regulator (I set it to 7psi) worked great all last season, (even running past 85 mph, LOVE the overdrive ZF).......and fired up first try this season.... Here are some more that are cheaper: https://www.amazon.com/Quick-Fuel-Technology-30-803-Regulator/dp/B003M8YJ1S/ref=sr_1_23?ie=UTF8&qid=1522785776&sr=8-23&keywords=Fuel+Pressure+regulator https://www.summitracing.com/parts/tfs-25017/overview/ All of these say they have one inlet and two outlet ports, buy say "no" for a gauge port. Why cant I use an outlet for the gauge? Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 3, 2018 Share Posted April 3, 2018 Here are some more that are cheaper: https://www.amazon.com/Quick-Fuel-Technology-30-803-Regulator/dp/B003M8YJ1S/ref=sr_1_23?ie=UTF8&qid=1522785776&sr=8-23&keywords=Fuel+Pressure+regulator https://www.summitracing.com/parts/tfs-25017/overview/ All of these say they have one inlet and two outlet ports, buy say "no" for a gauge port. Why cant I use an outlet for the gauge? Brandon - The Quick Fuel regulator has to be the Holley one. The pic below, of the Holley non-return style regulator that's on Big Blue is the spitting image for the Quick Fuel one. Mine has "In" and an arrow in the two places that one does, and it says "OUT" on both ends with arrows there as well. But the Trick Flow unit is slightly different. The body is different and there are no arrows. In any event, as you can see in my pic, I'm using a gauge on one "out" port and a hose to the carb on the other. That regulator has performed perfectly for many thousands of miles that way, having first been on Dad's truck, then Rusty, and now Big Blue. I've always had the gauge on it, and the pressure shows just fine. In fact, as said, on Dad's engine or Rusty's with the mechanical pump it would sometimes still have pressure the next day. But not so on Big Blue as the pump on it apparently doesn't have a check valve. In any event, there is no reason you can't put a gauge on one end and the supply to the carb on the other. It is straight through and whatever pressure you have on one end you'll have on the other. Link to comment Share on other sites More sharing options...
Bruno2 Posted April 3, 2018 Author Share Posted April 3, 2018 Brandon - The Quick Fuel regulator has to be the Holley one. The pic below, of the Holley non-return style regulator that's on Big Blue is the spitting image for the Quick Fuel one. Mine has "In" and an arrow in the two places that one does, and it says "OUT" on both ends with arrows there as well. But the Trick Flow unit is slightly different. The body is different and there are no arrows. In any event, as you can see in my pic, I'm using a gauge on one "out" port and a hose to the carb on the other. That regulator has performed perfectly for many thousands of miles that way, having first been on Dad's truck, then Rusty, and now Big Blue. I've always had the gauge on it, and the pressure shows just fine. In fact, as said, on Dad's engine or Rusty's with the mechanical pump it would sometimes still have pressure the next day. But not so on Big Blue as the pump on it apparently doesn't have a check valve. In any event, there is no reason you can't put a gauge on one end and the supply to the carb on the other. It is straight through and whatever pressure you have on one end you'll have on the other. This is on the Bronco: There seems to be multiple units packaged by different "brands" of this same regulator. This is the quick fuel:https://www.ebay.com/itm/192371142711 This is the Carter:https://www.ebay.com/itm/Carter-404-501HP-Fuel-Pressure-Regulator/172612219856?epid=227269341&hash=item28307d73d0:g:5PMAAOSwEK9W~r~i&vxp=mtr This is the Holley:https://www.amazon.com/Holley-12-803-Fuel-Pressure-Regulator/dp/B00029JC6C/ref=sr_1_4?s=automotive&ie=UTF8&qid=1522794268&sr=1-4&keywords=Fuel+Pressure+regulator Here is Summit's generic (which I was told by a salesman there it was indeed the Holley):https://www.summitracing.com/parts/sum-g3032/overview/ So, with that being said a guy can pay anywhere from $25-$75 for it depending who stuck their brand on it and who is selling it. I have no doubt these are all the same unit probably manufactured in China and boxed by whomever. There is an epidemic of this in the aftermarket for autoparts now. My neighbor Gil teaches automotive tech at the Vo Tech here. Is pretty savvy about stuff like this because he deals with all kinds of factory reps and dealerships. He told me if an AC compressor is a remand now it is rebuilt by one comapny in China for everybody rather it be Four Seasons , Cardone or whoever else has their hat in the ring. He advised to buy the absolute cheapest because their is no difference. I ended up buying the Quick Fuel because I had bad luck with a Summit generic part once that was a rebranded Holley fuel pump and I am not a fan of Holley either. I bought this little Fuel Lab guage to go with it:https://www.ebay.com/itm/Fuelab-71502-1-5-0-15-Psi-Carbureted-Fuel-Pressure-Gauge/391998845976?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Link to comment Share on other sites More sharing options...
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