Putting kerosene into gasoline - while both are hydrocarbons - and they will blend - the lighter oil nature of the kerosene to the solvent of gasoline; in an amount of 5% is not enough to change the STP vapor point of the gasoline, but it will weaken the octane rating of the gasoline enough to feel it under acceleration AND under pressure will raise the vapor point enough to perhaps prevent vapor lock depending on the ambient and under hood temperatures of where one is located. Stay up to date with the latest releases, events, promotions and more. I Have problems with the fuel temp in my 1937 Buick. 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. The carb should not flood even with the pump running unless it is putting out enough pressure to over come the float bowl shut off mannerism mechanism of the carb. The reliable, albiet slower, stovebolts never suffered vapor lock because the fuel pump and lines were up front in the airstream of the engine fan. Somewhat of an inconvenience but that's why it's probably cheaper than other places selling the same part number. The reg takes 3/8" fittings and the gauge takes 1/8" fittings. %PDF-1.4 finish) . So - you cannot just say whether it will work or not. To ensure this condition, the installation of a Holley 12-810 oil pressure safety switch is recommended ", So . ;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 Today's fuel is made for high compression engines - and it has an intentionally lower vapor point, with a higher flash point and autoignition point. Google ethyl acetate and pay attention to it's "pure" boiling point, and remember IMCT is a blend of a white gas family of a petroleum distillate and ethyl acetate. It's a diaphram with a spring. 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. The carburettor was flooding, the electric pump was still running. These cars have the carburettor mounted in "V" of the engine with exhaust manifolds running along each side of the carburettor which combined with under hood engine heat makes these cars very susceptible to vapor lock. To keep it on simple terms, several people have confirmed that adding some kerosene, diesel fuel or stove oil will reduce the tendency to vapor lock and will NOT hurt an older model, low compression engine. The peak was reached in the sixties when heavily leaded gas of over 100 octane was available. What I would do, is with the car off, (or electric pump off), turn the screw a good ways out. Some cars are much more apparent to vapor locking than others, I"ve never experienced here in NJ with either of my older Packards which see all kind of hot summer driving conditions. It appears this one needs 40 to 50 minimum. Refining of oil is basically heating it into vapors and then capturing those vapors various degrees of cooling - at the top is "propane" - at the bottom is "pitch" or "road or roof tar". (Maybe this arrangement was intentional to assist in vaporising the fuels of the day but it is all bad in hot weather with today's fuels). There's always a catch with bargains, Reviewed in the United States on July 9, 2022. Troubleshooting Carburetor Problems and Vaporlock Blues Revisited - Hagerty Lifestyle. That's not to say that adding something like kersene won't help, but it can't eliminate the volatile components. CBPN804A Swinging Drawbar Pin Kit Ford NAA 501 600 700 800 900 2000 3000 4000. 4.9. #2. We encountered an error while updating this page. For more information go to www.P65Warnings.ca.gov. TURNING THE ADJUSTMENT SCREW ALL THE WAY IN WILL RESULT IN EXCESSIVE FUEL PRESSURE . Will rise to above 180 degrees on the Temperature gauge. [endif]-->. This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles. Regards, Mike. 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. Works and does the job. The regulator that was shipped to me has an internal spring from a different model of regulator, the spring should be red. Reasonable . 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. Rusty, if you can find a cooperative local high school chemistry class, take a small amount of gasoline, split it into 2 portions, add 5% or so kerosene to one half, and have them do a fractional distillation on both. Holley 12-804 Fuel Pressure Regulator Brand: Holley 415 ratings -11% $6614 Was: $73.94 3/8" pipe thread ports 7/32" restriction Pressure ranges from 1 to 4 PSI Includes mounting bracket Satin finish See more product details + + Total price: $115.81 Add all three to Cart These items are shipped from and sold by different sellers. 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. Ships from and sold by Performance Guarantee. This approach is not recommended for higher compression cars made from the mid fifties onwards. It needed a bit of adjusting for my purpose, but other than that, it performed perfectly. Contact Us - DO NOT EMAIL CAR QUESTIONS. holley blue fuelpump pressure erratic. 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. It works but not as well as some of the off brands like spectre. Could you explain a little more about how you would run the bypass? the installation of a Holley 12-810 oil pressure safety switch is recommended for installation into the wiring circuit. The regulator that was shipped to me has an internal spring from a different model of regulator, the spring should be red. . 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. You could arrange them on a scale from naptha gas, gasoline, kerosene, stove oil, diesel fuel, light lubricating oil, heavy lubricating oil, grease, asphalt. 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. neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair, or used in applications other than . So the goal is to raise the vapor point temperature without lowering the auto-ignition temperature or flash point or flame spread speed - or increasing the flame spread speed too much. To avoid extra back pressure on the pump, and to keep cool fuel flow past the lowest pressure point in the fuel system; a by-pass line should be used and it should NOT "dead head" to the carburetor - that is put the return line as close to the carburetor inlet as possible. Quick & Hassle Free. By the way, I had an excellent service from this seller (5 stars!). Street/Strip Carbureted Applications If yes what size should I, A: 4.25 out of 5 stars. Click here to find a store ***The inlet pressure limitation is 7 psi. One common problem is when you have an abnormally warm day in the winter, and the low vapor pressure gasoline in the car will vapor lock on that hot day. I would like to try IMCT, how is it sold? % GENUINE Holley 12-804 CHROME 1-4 PSI Adjustable Fuel Pressure Regulator Kit $49.99 Free shipping Holley 12-804 Carbureted Fuel Pressure Regulator $37.07 +$14.99 shipping Holley 12-804 Chrome Street Strip Fuel Pressure Regulator 1-4 PSI $54.53 Free shipping Holley Performance 12-804 Fuel Pressure Regulator $54.53 Free shipping Holley 12-804 $55.86 But it is not the ethyl acetate alone that causes the effect to raise the vapor temperature point of fuel. This part is Backordered. The intent being to get "cool" fuel to the carburettor bypassing the areas where the system heats the fuel. This product is universal and applies to all vehicles. But, . 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. OD says the Boiling point of gasoline cannot be raised by adding a heavier hydrocarbon - such as kerosene or diesel - and points to a high school chemistry class experiment as his proof. Eligible for Return, Refund or Replacement within 30 days of receipt. if you were packing them in boxes they would look identical. Once the fuel fills up the float bowls in the carburetor and the needles and seats shut, it starts to build pressure, pushing the diaphragm against the adjustment spring under the adjustment screw and allowing the ball to go "up" against the seat, effectively shutting off fuel flow to the carb. If the carbs are drawing fuel and you lower the pressure at the reg, it should show on the gauge. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. So with that vapor fueling system - you are stuck "downgrading it" to a lower quality fuel. Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. It seemed to work fine for a while after I dialed it into 2psi at idle, but now it reads 6psi and it won't adjust down to 3psi. I turned into a side street and opened the hood. 3 0 obj <>stream Another thing you can do is wire the fuel pump to be hot in run and start through an oil pressure switch - so if the motor shuts off or looses oil pressure the fuel pump shuts off too. Designed using state-of-the-art technology and with customers in mind. Some of these items ship sooner than the others. Inlet from fuel pump is at bottom. This went on until they developed the cracking process which allowed more flexibility in what they got out of the crude. Gauge looks small..it is not. No issues. It takes a lot to hurt today's stainless steel valves, but in an older car be careful - and an exhaust gas temperature gauge is not a bad idea to invest in. The unit however is working fine but am curious about the missing gaskets and how important they are? Includes initial monthly payment and selected options. HWYoF~Ta77[Z4"bG K=yK I had a chrome dial regulator, which leaked gas everywhere but luckily didn't actually burn down my ride. 2-Port Carbureted Fuel Pressure Regulator (12-804) by Holley. The 12-804 is made from durable aluminum and has a satin chrome finish that is extremely resilient to corrosion and abrasive chemicals. See also Tom Ogle's "modern" vapor fueling system - google it. Sign up for a new account in our community. The Holley 12-804 fuel pressure regulator features 3/8" NPT in/out ports. f9vxY"IpBQ? The other part numbers utilize an AN O-ring inlet, outlet, & return ports, and do not require any sealer on the threads. Rusty said any heavier hydrocarbon WILL raise the boiling point - and I said Rusty is correct and OD is wrong. Plain WATER has great cooling properties, but under pressure will boil at a lower temperature than anti-freeze mixed with water - up to a certain point. Our payment security system encrypts your information during transmission. 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. Carb Part, 14 PSI Fuel Pressure Regulator Set 3/8in NPT Port 12804 for Holley : Amazon.com.au: Automotive Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. The Holley 12-840 fuel pressure regulator features 3/8" NPT in/out ports. Its a bypass arrangement with non return valves to prevent reverse flow and is operated by a switch for use in event of vapor lock. 12-804) is a Low Pressure (1-4 PSI) regulator. In the later 1960s, it was somewhat common for people who were going on vacation, in the summer, to add a gallon or two of diesel to a full tank of gasoline for their trip. ). use a 1/16 - 1/8" restrictor in the end of your fuel line to see if you can set the pressure then. We are sorry. . Discussion in 'The Hokey Ass Message Board' started by oldrelics, Oct 12, 2010. Reviewed in the United States on September 4, 2017. I still suspect the flooding was due at least in part to fuel boiling in the carburettor bowl and venting the vapor above the float could assist. It looks like WhatsApp is not installed on your phone. Check the status of your Recommended Parts. Fuel Pressure Regulators Instruction Sheet (42712804), Designed to be used with standard pump only, Measures 2-1/2" wide and 1-1/2" tall and deep, This low pressure fuel regulator is factory-set to 2.7 PSI, but is fully adjustable from 1 to 4 PSI, It includes mounting bracket with 2 each self-tapping screws for regulator to bracket installation purposes and 3 screws for bracket to vehicle installation, 1-3/4" hole spacing to mount the regulator to the bracket. I still think they sent you the high pressure one. Mounting Bracket Included. In fact I can completely remove the adjusting screw and it still does not go down to 3psi. This diaphragm repair kit is for 12-803 and 12-804 regulators. The fuel pump and fuel line setting top center of the engine was not only in the hottest ambient temp, except for the exhaust manifolds, under the hood they acted as a heat sink transferring heat from the block to the air. Also, what is it about Kerosine, and possibly the products like LeadMx or Marvel Mystery Oil (mentioned specifically in the article) that drive some improvement? I have found IMCT is a happy medium that does both in the right quantities - raise boiling point and octane just enough to be a "goldie-locks" kind of additive to help prevent vapor lock. Show details They sold more gas than coal oil. IMCT is found in the paint isle of any hardware or home improvement store usually in quart or gallon cans. 3/8Inch Npt Ports 1 Inch 2 Out. Yes, you will need to buy the type of connection you want to use such as hose barb, compre. That is why fuel injection systems push usually 45 to 60 psi on the fuel at all times with a by-pass line - to keep it liquid and keep it moving - so it cannot turn to vapor in the lines. => https://www.holley.com/data/
