What if any additives would do this and why? CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Some parts are not legal for use in California or other states with similar regulations. He asked about issues and thoughts of what causes vapor lock, so it is just answered in more detail and suggested solutions on how to fix vapor lock. 2023 Holley Performance Products, Inc. All Rights Reserved. Quick & Hassle Free. I am not going to quote all you said, but the flooding from the electric pump was caused by too much fuel pressure over coming the needle seat (or whatever kind of seat it has for the bowl) of the carburetor. If this is true, how come adding antifreeze to water raises the boiling point? $41.19. This item: Holley HOL 12-886 Regulator $13129 MEASUREMAN 1-1/2" Dial Size, 304 Stainless Steel case, Liquid Filled Fuel Pressure Gauge, 0-100Psi, 3-2-3%, 1/8"NPT Center Back Mount $2597 Moroso 65380 Fuel Line Fitting $1701 Total price: $174.27 Add all three to Cart Some of these items ship sooner than the others. Adding some additives can raise the AVERGE boiling point but cannot remove the lower-boiling components, so regardless of what higher ends are present, the initial boiling point will remain that of the most volatile components. Holley 804 fuel pressure regulator install - YouTube 0:00 / 5:58 Holley 804 fuel pressure regulator install Schnebs Garage 2.42K subscribers Join Subscribe 72 Share Save 15K views 3 years ago. I cannot help you - and no one can without knowing the exact make up of the gasoline being refined where you are. However the part number on the box was 12-804 which should be a 1-4 psi regulator BUT the Part number etched on the unit was 12-804 4.5-9 psi which doesnt exist. The other possibility is that it is due to the higher pump pressure. For more information go to www.P65Warnings.ca.gov, WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov, WARNING: This product can expose you to chemicals including 1,1,1,2-Tetrachloroethane which is known to the State of California to cause cancer. 0 [endif]-->. Second, you adjust this regulator by turning the hex screw on top - does anyone happen to know how many pounds one or more full turns would produce etc? Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. On the Holley 12-804 fuel pressure regulator, the factory preset is supposed to be 2.8 pounds - can anyone say is Holley usually pretty accurate on these presets? Shiny Finish. I have already been thinking about switching over to a modern fuel pump, say the Mallory 110, plumbing in a regulator just downstream of the carbs, and taking the bypass fuel back to the fuel tank. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto store and one of our representatives will gladly assist you with any questions or concerns you may have. The Holley Fuel Pressure Regulator (Part No. I prefer to keep things simple but I appreciate the more correct technical approach. The two will be very close to the same just as would Water and Anti-Freeze boiled in an open pot. By ***The inlet pressure limitation is 7 psi. It is as said - of the "paint thinner" family in weight with ehtyl acetate blended in to make it's solvency properties a little "hotter " and stronger. I adjust it up to 2.5 pounds and clean my hands. Fuel Pressure Regulator; Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. It's easy! My bypass line has a shut-off valve that I can use to manually adjust the pressure, but when air bubbles develop within the input fuel line, this valve requires adjustment to maintain the fuel pressure. I found this document on my local Oil Refinery's web site and it may help explain some of the problems with vapor lock and hard start. Vapor lock was just a fact of life for the Fords. Browse In Stock and Ready to Ship Alternatives, Universal Fit, 1-4 Fuel Pressure Rating (psi), Aluminum. I recall when Texaco used to advertise their "customized for your area" gasoline, in the earlier 1960s. => https://www.holley.com/data/Products/Technical/199R7914-3rev3.pdf. Holley 12-804 Fuel Pressure Regulator 3/8 pipe thread ports 7/32 restriction Pressure ranges from 1 to 4 PSI Includes mounting bracket Satin finish This regulator is used to adjust to fuel pressure requirements of various carburetors and supplies the proper pressure to the needle and seat valve to prevent flooding or drivability problems. Then I got this good one, to try to get 1.5 PSI to the Kadrons. 3 0 obj <>stream Holley(R) has been the undisputed leader in fuel systems for over 100 years. Add some heavy ends. You refer to the problem of the additive increasing the propensity for the fuel to self ignite however in my case the compression ratio of the cars is so low (around 4 : 1) that I doubt that it would be a problem. Holley Manufacturer Part Number 12-804 Manufacturer Holley Assembled Product Dimensions (L x W x H) 3.50 x 3.50 x 2.50 Inches Warranty Warranty information 90 DAY REPLACEMENT IF DEFECTIVE Warnings Warning Text proposition 65 reasons:titanium dioxide, other chemicals WARNING - California Proposition 65 None Report incorrect product information The intent being to get "cool" fuel to the carburettor bypassing the areas where the system heats the fuel. Otherwise it's good. Fuel pressure regulators are used to adjust for fuel pressure requirements of various carburetors. Q: What you write in post 12 is NOT correct. December - February gas mixture begins to vaporize at 11-15psi at 105 deg F, April gasoline is 9-11.5 psi at 124 deg F. If you had winter gasoline in your Antique car on a 100 deg day you would only be about 5 degrees from vapor bubbles in the fuel. A quart of diesel added to the gas tank solves the problem without any more in side effects than a slight smell from the exhaust. The pressure regulator works fine when mounted flat, but should work ok when mounted on it. Fuel pressure regulator includes mounting bracket with 2 each self-tapping screws for regulator to bracket installation purposes and 3 screws for bracket to vehicle installation.Regulator has a 3/8" NPT . What we call gasoline - as Rusty showed; is blended today - and the various chemicals blended into it for the various regions and state laws make it a special product where you BUY it. I am intrigued by you statement, "Once these chemicals are blended - the over-all resulting chemical properties - especially boiling point under pressure is changed - they are NO LONGER SEPARATE boiling points in play.". Find an Automotive Service Professional P/N 12-803, 12-501, 12-804, 12-500, & 15812NOS Installation Instructions WARNING! Shipping cost, delivery date, and order total (including tax) shown at checkout. The thinner, lighter products are at the light end of the scale the thicker heavier products are at heavy end. I have a electric pump at the tank to try and speed up the fuel cooling process but if you have a 100 deg F day you may have fuel near 100 deg F in the tank. Interesting that the writer suggests certain additives can raise boiling point of gas in the first section. I turned into a side street and opened the hood. neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair, or used in applications other than . Overview. Yes the light elements will still be in there. Typically there are "winter" and "summer" blends with different vapor pressures to promote atomization at cold temps and to discourage vapor lock at hot temps. What I would do, is with the car off, (or electric pump off), turn the screw a good ways out. What one is after is new "liquid" fuel which vaporizes easily in open air, lights easily and has a rapid flame spread but NOT a hot explosive one, and burns easily and completely under one atmosphere of pressure - what we call 14.7 to 1 - BUT - and this is most important; does not auto-ignite at a low temperature and WAITS to be lit by the spark after being compressed in the cylinder. . It's not the vendor's fault, these things should have been recalled, or the vendors made aware of the issue so that they could be inspected before they're sold. Gasoline vaporizes according to fuel system pressure. I did, works great & looks beautiful. Check the status of your Is there a brand name? 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Adjustable from 1 to 4 PSI. Like many others, I have been considering what to do recently. CBPN804A Swinging Drawbar Pin Kit Ford NAA 501 600 700 800 900 2000 3000 4000. I have the one I have set up in a deadhead setup. In the early days of the oil business the demand was for kerosene or coal oil. The ethyl acetate in the IMCT loosens hydrogen bonds on the gasoline making it easier to light to burn, but the "oil" - heavier hydro-carbon nature keeps the vapor point higher and flash point still low enough to give good performance. Join Date: Nov 2007 Posts: 22035 Share Tweet #2 store All kinds of remedies were tried. The Holley 12-804 fuel pressure regulator features 3/8" NPT in/out ports. I ordered the 12-804 regulator online because I couldn't find one locally, this is for an engine on a piece of equipment that I make my living with. fuel pressure in at the top, fuel pressure out on each side. Rich boys replaced their 216 stovebolt 6's with GMC 270 or 302 sixes with a performance "full race" cam. Features: Adjustable from 4.5-9 psi for precise fuel pressure adjustments Constructed of billet aluminum with a black anodized base and clear anodize top for good looks Used in systems where a return line is not needed Use with electric or mechanical pumps Profile Page . . These will raise the boiling point of the fuel but reduce the octane. For more information go to www.P65Warnings.ca.gov. 1 oz per gallon - not more than 2 is usually in the right "goldie-locks" range. Interesting theory. f9vxY"IpBQ? The regulator that was shipped to me has an internal spring from a different model of regulator, the spring should be red. Bobburns thank you for the confirmation and technical explanation. Loosening the regulator locknut and turning the adjustment screw clockwise increases the pressure. Thanks again fellows, for such informative posts. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. . I have used up to 20% kerosene with no discernible change and have spoken to people who told me that years ago on farms these old cars would run fine if started on gasoline then switched to 100% kerosene. They put everything they could into the coal oil including what we would consider low grade gasoline. Yes. Quadrajets should have 6 to 9 at the inlet or they flood past the needle seats. With this set up, pressures throughout system varies only very slightly from atmospheric, lower up to the vacuum tank and higher in the gravity feed from the vacuum tank to the carburettor. Terms of Service. I can start my car instantly after sitting in a cool garage at about 75 deg F. Drive 30 miles and then park for 20 minutes. Reviewed in the United States on September 4, 2017. Unfortunately, this fuel pressure regulator does not even come close to regulating the pressure and keeping the pressure down. This diaphragm repair kit is for 12-803 and 12-804 regulators. P/N 12-803, 12-803BP, & 12-804 Installation Instructions 199R7914-3 NOTE: 12-803BP IS NOT TO BE USED WITH MECHANICAL FUEL PUMPS! Holley's instructions say, ". By the way, I had an excellent service from this seller (5 stars!). That was in the 1990s, so you can project to more current times and suspect we have something more sophisticated now. holley blue fuelpump pressure erratic. Your question might be answered by sellers, manufacturers, or customers who bought this product. This will ensure that the pump will not continue to operate after the engine is . May God's grace bless you in the Lord Jesus Christ. on this design the adjusting screw all the way out should decrease the pressure the most - IF the ball valve will seat TIGHT, When I adjusted pressure below 30 - it would not seat any longer even with the adjustment screw all the way out. I have used kerosene to avoid vapor lock and there is no doubt it helps, the more the better up to 20% in a low compression 1920's car. I'm still looking for the reg in this pic. At first it seemed fine, set it to 1.5 PSI and away we go. Please refresh and try again. You set it to the exact fuel pressure you want. There is no "chemistry set" method to measure fuel vapor points. couple more questions, Rusty, what exactly are "heavy ends"? . (that is this one in the image below) The adjustment spring under the adjustment screw is pushing down on the diaphragm holding the ball off it's seat. Kerosene diesel fuel or stove oil will work. But it is not the ethyl acetate alone that causes the effect to raise the vapor temperature point of fuel. finish) . Copyright 2023, Antique Automobile Club of America. I installed this on my Onan 7000 generator as part of a project to resolve vapor lock issues in hot weather and high altitudes. My plan was to install a fuel pressure regulator on the line going to the generator so that the bypass valve needs less fine tuning to maintain the same pressure in all temperatures. I switched on the electric pump and it instantly picked up and ran for a few seconds then reverted to the classic vapor lock symptoms. Rusty said any heavier hydrocarbon WILL raise the boiling point - and I said Rusty is correct and OD is wrong. the cause for your fuel pressure fluxuation is because the fuel pressure is bumping up against the regulator and the extra fuel has no where to go , the quick fix is run a return line . [endif]-->. Right & left, Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.Learn more how customers reviews work on Amazon. A: Hi Bob, I can get a hold of some 99.7% pure ethyl acetate cheap. I installed this on my Onan 7000 generator as part of a project to resolve vapor lock issues in hot weather and high altitudes. Adjusting Holley & Demon Mixture Screws; Holley Specs HP Series; Edelbrock Carburetor Specs; Holley Double Pumper 4150 Specs; Carter Competition Series AFB Specs; Company Info. Learn more about our The seller gratefully sent me a replacement part but the result was the same. Takes a little time to peel back the rubber case then remove the glass with a fine blade screwdriver, reset to zero. Purchased the regulator from Baxter, unit arrived in 4 days.. So - you cannot just say whether it will work or not. The check ball is held shut with the diaphragm and spring and once the desired fuel pressure builds up it opens that valve and allows fuel to go back to the tank. This Holley FPR (12-804) use to be a perfect choice to solve the "too much fuel pressure" produced by the aftermarket fuel pumps on vintage VW. We currently do not have an estimate when this item will ship. BP cannot by law tell you what you can blend into fuel to change its properties - but any petroleum distillate can be used - and the ester family - many of the alcohols we call them - can also be used. I would like to try IMCT, how is it sold? To see our price, add these items to your cart. ;b DK%*DO[%A IPd?Q~]=n1)E1D*q`D fF-"4N3i4\1uOn(@%c0IHQg`~uKVf{/r0d2}XVXi1-tpE1K[T*3"IS0v27UfTajff`"(dJD0fFlvryT{?:VUusSqD?R$LlalK&@$8q'qbSEv Fuel pump regulator has 3/8" NPT inlet/outlet ports. If I could get 75-85 octane, non-ethanol, Regular gasoline that vaporized at above 180 deg F, I think my car would run fine all the time. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. Unfortunately, these FPR are now made in Korea and they no longer include an alternate spring. The Holley 12-804 is a 1 to 4 range PSI regulator. If your having pressure controll issues with the Holley regulators you can eliminate most problems with stability by installing a by pass line back to the tank and usualy a street car can use 1/8 copper. As you can see from what it replaces - it is "hot" solvent - but not quite as hot as acetone in its ability to dissolve other things. I do not have a pressure regulating valve to reduce the pressure from the pump but it works fine with no flooding under normal conditions and I have fitted a modern soft seat to the float cut off needle. Easy to read. Then, we got what was loosely described as winter gas, all year round, with RFG. This satin finish regulator feature 3/8 pipe thread . None of them worked. HWYoF~Ta77[Z4"bG K=yK wrapped around the fuel lines. . Holley HOL 12-804 12-804 Fuel Pressure Regulator. If youre looking to dial it in accurately its not going to do it. I will be fitting a pressure regulator, it can only help and will have to wait for the next vapor lock to occur to see if it overcomes the flooding. 10 in stock. LOW PRESSURE REGULATOR 12-804 quantity. '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge . The higher the RVP, the greater the tendency to vaporize or vapor lock. One needs to have studied Chemistry as I have to actually know how this works. Reid Vapor Pressure (RVP) is a commonly used indicator of gasoline volatility. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. The unit however is working fine but am curious about the missing gaskets and how important they are? Discussion in 'The Hokey Ass Message Board' started by oldrelics, Oct 12, 2010. It is not all the same. What Rusty writes IS correct. See also Tom Ogle's "modern" vapor fueling system - google it. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. The regulator that was shipped to me has an internal spring from a different model of regulator, the spring should be red. Yes, you will need to buy the type of connection you want to use such as hose barb, compre. Though I once has it working with only two 0-140 regulators, and since I had messed with the 0-140 regulator on the carb feed side trying to get it to work previously - it popped up to 50 psi - but the 15 psi reg held at 9 psi to the carb - for about 5 minutes, until I tried to reduce the 0-140 below 50 psi.