Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. 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. Then I got this good one, to try to get 1.5 PSI to the Kadrons. Fuel pump regulator has 3/8" NPT inlet/outlet ports. WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. ;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 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. Just open the hood and let things cool. It will meet your needs and deliver great quality at an affordable cost. The two will be very close to the same just as would Water and Anti-Freeze boiled in an open pot. Installation was made more complicated by the absence of a port for a pressure gauge, which means They use gravity feed from vacuum tank mounted under the hood and directly over the exhaust manifold. If yes what size should I, A: 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. The Holley 12-804 fuel pressure regulator features 3/8" NPT in/out ports. $12.15: ac000400: Front Axle Beam Bushing Reamer For 1.34 Up To 1.50 Diameter . Adding heavier weight hydrocarbons WILL raise the vapor point under pressure - usually enough to keep the fuel from vaporizing in the line or boiling off in the carburetor bowl while flowing. 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. 03-28-2012, 03:04 AM. Could you explain a little more about how you would run the bypass? 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. Adjustable from 1 to 4 PSI. holley blue fuelpump pressure erratic. Thanks again fellows, for such informative posts. Carb Part, 14 PSI Fuel Pressure Regulator Set 3/8in NPT Port 12804 for Holley : Amazon.com.au: Automotive Talk to the experts. Browse In Stock and Ready to Ship Alternatives, Universal Fit, 1-4 Fuel Pressure Rating (psi), Aluminum. Can anyone speak to the validity of this or is anyone currently using an additive for this? Stay up to date with the latest releases, events, promotions and more. This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. WARNING! Conversely if you go too high and it knocks - you can bring it down with kerosene or the paint thinner family. 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. We currently do not have an estimate when this item will ship. This diaphragm repair kit is for 12-803 and 12-804 regulators. 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. Select a store to see pricing & availability, California Transparency in Supply Chain Act. I have heard true lead (LeadMax2000 or simillar) may do this as well? 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.". This approach is not recommended for higher compression cars made from the mid fifties onwards. . 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 unit however is working fine but am curious about the missing gaskets and how important they are? It was not. Great product from holley, but these do not come with the supplied tap that's suppose to be in box for the 2 machine screws that mount the regulator to the bracket. 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. I cannot help you - and no one can without knowing the exact make up of the gasoline being refined where you are. CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. I had a chrome dial regulator, which leaked gas everywhere but luckily didn't actually burn down my ride. . Please try again. For now, in 70 degrees ambient, the bowls are 100 F. at shut-down and after 15 minutes they rise to 115 F. At these temperatures the engine starts back up fine, but I believe another ten degrees will be in the problem zone. You can wire a by-pass switch for priming if it is really required. http://www.bp.com/liveassets/bp_internet/retail/retail_australia/STAGING/local_assets/downloads_pdfs/f/FN_modern_petro_vintage_engines.pdf, . This Holley universal low pressurefuel regulator is factory-setto 2.7 PSI, but is fully adjustablefrom 1 to 4 PSI. YES the boiling point of gasoline can be raised (or lowered) by an additive - depending on what it is - as can the autoignition temperature which will increase "knock" - using the right additive for the fuel you just bought and put in your tank is the trick and it is always going to be hit and miss - depending on what refinery produced the gasoline in the first place. % Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. By 1913 it was the other way around.
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