holley 12 804 adjustment

Yes you can adjust fuel pressure with this regulator. Also I fitted a modern soft seat to the carburettor to assist in shutting off the higher pressure from the pump - the original shut off is a brass tapered needle on a brass seat. Wouldn't the water still evaporate at the same temp? . Holley 12-804 1-4 Psi Carbureted Two Port Fuel Pressure Regulator: Item #: HLY12-804 : Quantity: Price: $53.99 Add to cart . Average for the last 12 months. 1996-2023, Amazon.com, Inc. or its affiliates, Select a location to see product availability, Holley HOL 12-804 12-804 Fuel Pressure Regulator. Holley Bracket Secondary Adjusting Lever Kit Steel Gold Iridited Holley 4150. #2. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. There is no hard and fast cutoff for any of these. It was about this time that car makers lowered the compression ratios, went to long stroke motors, and developed hot spots and vaporizers on their intakes to burn the new low grade or low octane gas. I have adjusted a 6-9 lbs pump down. Holley part number for the kit is 12-807; Summit sells it for about $6. I have no idea - you are in uncharted territory. NOTE: P/Ns 12-841, 12-842, & 12-879 utilize 3/8" NPT inlets and outlets. The peak was reached in the sixties when heavily leaded gas of over 100 octane was available. Troubleshooting Carburetor Problems and Vaporlock Blues Revisited - Hagerty Lifestyle. ${cardName} not available for the seller you chose. 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. The other possibility is that it is due to the higher pump pressure. Ships from and sold by Performance Guarantee. Posts: 32372. use a 1/16 - 1/8" restrictor in the end of your fuel line to see if you can set the pressure then. Sign up for a new account in our community. This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles. ${cardName} unavailable for quantities greater than ${maxQuantity}. I do not think we hi-jacked the thread - the article is not even available anymore online to read. 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. Your question might be answered by sellers, manufacturers, or customers who bought this product. None of them worked. 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. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. Designed using state-of-the-art technology and with customers in mind. Adjustable fuel regulation from 1 to 4 psi, Holley 12-804 Reg, Fuel Press 1-4 Psi Pol. loyalty program %PDF-1.4 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. 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. That was in the 1990s, so you can project to more current times and suspect we have something more sophisticated now. Quadrajets should have 6 to 9 at the inlet or they flood past the needle seats. ***The inlet pressure limitation is 7 psi. 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. Can you adjust the fuel pressure? $5 Off Your $100 Mobile App Purchase . [endif]--> http://www.bp.com/liveassets/bp_internet/retail/retail_australia/STAGING/local_assets/downloads_pdfs/f/FN_modern_petro_vintage_engines.pdf, Many thanks for taking the time to clarify this interesting subject . Eligible for Return, Refund or Replacement within 30 days of receipt. It feeds fuel directly from the tank to the carburettor. order 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. Take a look at the article below. Overview. i'm trying to figure out why you are running a T when there are two outlets. Discussion in 'The Hokey Ass Message Board' started by oldrelics, Oct 12, 2010. Stay up to date with the latest releases, events, promotions and more. If yes what size should I, A: Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. 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. Discussion in 'The Hokey Ass Message Board' started by striper, Aug 12, 2009. Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising. No mention of vapor lock issues, but engine de-carbon activities. 12-804 12-500 Low-Pressure Fuel Regulator (std. Does this mean that we are back to the situation described by OD where the lower boiling point additive reduces only the average boiling point? If you purchased April gas when you take your Antique out of winter storage it is only a month until the switch from 124 deg F to 140 deg F. This might explain a lot of problems in early summer. I wanted to upload the map, but at 2.73mb, it was too big. This diaphragm repair kit is for 12-803 and 12-804 regulators. do you have a picture of it hooked up? Accurate description.

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