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Will changing the orientation change the preset pressure setting (checkball falling instead of raising)? Purchased the regulator from Baxter, unit arrived in 4 days.. Dorman 55241 Fuel Line Filter Kit Universal Fit, EVIL ENERGY 6AN Female to 6AN Female Straight Swivel Coupler Union Fitting Adapter Aluminum Black, Beck Arnley 036-1360 Valve Cover Gasket Set, JDMSPEED New Electric Fuel Pump 861155A3 Replacement For Mercury Mercruiser Marine Boat 4.3L 5.0L 5.7L V6 V8 Carburetor Engines Low Pressure Fuel Pump Replaces 935432 18-8868 With Gasket, Electric Fuel Pump - Compatible with Mercury Marine Carb Models - Mercruiser, 1998 4.3L 262, 2000 5.0L 305, 2000 5.7L 350, MCM/MIE 4.3L V6, 5.0L V8 Gen+ - Replaces 861155A3, 861156A1, 18-8868, UKCOCO Propane Gas Regulator with Pressure Gauge Manometer Level Gauge for BBQ Camping Cookers Caravan Plumber (Green), TEMSONE Adjustable Fuel Pressure Regulator Set Universal EFI FPR with 30-70 Psi Gauge 6AN - 6AN Feed & Return Fuel Line Hose Fitting Connectors Kit Blue & Red, MEANLIN MEASURE 1/4 Inch NPT Air Compressor Regulator with Gauge, 0-150 PSI AR2000 Air Gauge Regulator Inline for Air Compressor and Pneumatic Tools, took a long time to arrive. Holley recommends applying PTFE paste to the NPT thread of the fittings before installation on these applications. I do not think we hi-jacked the thread - the article is not even available anymore online to read. The BP article explains causes - not how to change fuel formulations - so for this discussion it explains nothing. 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. CBPN804A Swinging Drawbar Pin Kit Ford NAA 501 600 700 800 900 2000 3000 4000. Includes initial monthly payment and selected options. 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. Adjustable Fuel Regulation From 1 To 4 PSI.220 Inch 7/32 Inch Restriction. 9 really is max. The term heavy ends may be old fashioned and obsolete. We are sorry. IMCT is a "new product" from Klean-Strip they call "Industrial Maintenance Coating Thinner" that provides good solvency and can be used in place of MEK, Toluene, Xylene and VM&P Naphtha for thinning Industrial Maintenance Coatings. Then I got this good one, to try to get 1.5 PSI to the Kadrons. Does this need to be mounted upright or is it ok on its side? #1 Holley 12-803 Fuel Pressure Regulator January 16, 2011, 11:41 AM Can it be mounted upside down (adjustment screw pointing down) and still work properly? should be one inlet in two outlets out, i've seen very smart mechanically inclined people hook the carb to one outlet and the pressure in to the other, it's easy to do, not saying anything bad but could be a a possibility. Log In / Register Order Status. and a rotary click style one here on the shelf pete, you are welcome to borrow them to troubleshoot your problem.. let me Know. 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. 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. Stay up to date with the latest releases, events, promotions and more. 03-28-2012, 03:04 AM. It is a measure, as I understand it, of how readily the fuel will evaporate in open air. See also Tom Ogle's "modern" vapor fueling system - google it. Reviewed in the United Kingdom on January 31, 2016, Reviewed in Canada on January 27, 2023, Reviewed in Canada on December 18, 2019, Reviewed in Canada on November 10, 2020, Automotive Performance Fuel Injection Systems, Automotive Replacement Fuel Injection Pressure Regulators, Learn more how customers reviews work on Amazon, Holley 12-804 Reg, Fuel Press 1-4 Psi Pol. 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? You would'nt just be reading the inlet pressure would you? The higher the RVP, the greater the tendency to vaporize or vapor lock. $59.69 . You'll find they both have the same initial boiling point - been there and done it. Show details [endif]-->. As an example water would boil and thus "vapor lock" at a really low temperature without ethylene glycol. 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. Changing the vapor pressure (and thus the boiling point) of gasoline is not new. Kerosene diesel fuel or stove oil will work. This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles. 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. If so how? We dont share your credit card details with third-party sellers, and we dont sell your information to others. Today's cars are all fuel injection so it doesn't matter how easily the gas evaporates, it is under pressure in a closed system from the tank to the intake. if you run a holley blue pump it is set at 14psi from the factory and you must run the regulator that came with the pump . The summer gasoline vaporizes in the line and the heat soak is quicker and longer on hot day's. 1 oz per gallon - not more than 2 is usually in the right "goldie-locks" range. It IS variable and a result of the various fuel blend components. Great feedback from a knowledgeable group, guys! US $57.76 Finish:Gold Zinc billet aluminum bracket that conveniently mounts a 12-803 Black anodized 12-804 or 12-803BP fuel pressure regulator utilizing the passenger side carb studs on any 4150 / 4160 style carburetor. At first it seemed fine, set it to 1.5 PSI and away we go. Prewar cars have very low compression and will run better on gas that has some kerosene added. I adjust it up to 2.5 pounds and clean my hands. Usually, just runs really lean for a couple of minutes, and will not go above idle until fresh fuel finally clears through. The carburettor was flooding, the electric pump was still running. In theory the vapor carburetor was the way to go in that day - with lower flash point fuels like poor grade fuels that all pretty much resembled the weight of kerosene in that early day of motor fuels. The two will be very close to the same just as would Water and Anti-Freeze boiled in an open pot. Why does this occur only under increased pressure? The unit however is working fine but am curious about the missing gaskets and how important they are? 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. The BP article does not address how to re-blend your own fuel, and indeed - each batch of gasoline - and even how long it has been sitting in a tank will change it's properties as certain things evaporate out of the fuel changing it's properties if in a vented tank. I have just this Spring started taking temp. Loosening the regulator locknut and turning the adjustment screw clockwise increases the pressure. None of these contain lead and so should not damage a catalytic converter if you have one, HOWEVER too much IMCT will prolong the burn and may result in unburnt - STILL burning HOT gas being exhausted in the exhaust cycle. The pressure regulator works fine when mounted flat, but should work ok when mounted on it. Reasonable . In answer to Rusty's comment about adding anti freeze to water, the difference is that water is only one material, H2O, with a single boiling point (varied only by pressure). here's one installed,same holley low pressure regulator, line pressure in the top, one side is hooked to the fuel pressure sender, other to the line going to the fuel block. Thus the "lowest boiling point are the cause of vapour lock" is also NOT CORRECT thinking. fuel pressure in at the top, fuel pressure out on each side. 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. Join Date: Nov 2007 Posts: 22035 Share Tweet #2 Holley 12-803 Two Port Chrome Fuel Pressure Regulator - 1-4 PSI. Shopping Cart I still think they sent you the high pressure one. 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. Designed using state-of-the-art technology and with customers in mind. [{"displayPrice":"$58.17","priceAmount":58.17,"currencySymbol":"$","integerValue":"58","decimalSeparator":".","fractionalValue":"17","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"UhTnfcw7IZxaNntXlJwDKCZdMn2swwW9Qa8PxzrWBz%2By8RC0ilxVsHIj8toGUO%2FPmmF8b2HD1iNYooZ7n4ER0XuKiQsQQvJG86lgqsni6KYZs%2FdLcIOIE0Ukulbz%2BJYBuUOC820ciUZxU2UEL9sUjtoq8gdk8bOPIZ3QChg8zpgyIZxlTaXQEA%3D%3D","locale":"en-US","buyingOptionType":"NEW"}]. I'm still looking for the reg in this pic. As the car is parked Temperature. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. Copyright 2023, Antique Automobile Club of America. I am having problems understanding why you say OD is wrong and Rusty is correct, it seems to me you are all saying much the same and that is that gasoline is made up of many components each having different boiling points and the components with the lowest boiling point are the cause of vapour lock.