What if any additives would do this and why? Discussion in 'The Hokey Ass Message Board' started by striper, Aug 12, 2009. Holley HOL 12-804 12-804 Fuel Pressure Regulator; ; Customer reviews . . I feel I am 95% there, and a slight improvement would be all I need - for now, that is unless the ethanal mix changes (your tax dollars at work). i'm trying to figure out why you are running a T when there are two outlets. 3/8 pipe thread ports; 7/32 restriction; . IMCT is found in the paint isle of any hardware or home improvement store usually in quart or gallon cans. Holley 12-804 Adjustable Fuel Pressure Regulator, 1-4 PSI - Speedway Motors '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 . Purchased the regulator from Baxter, unit arrived in 4 days.. If the carbs are drawing fuel and you lower the pressure at the reg, it should show on the gauge. Holley fuel pressure regulator 12-803 instructions for a bad /189/ 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 would like to try IMCT, how is it sold? 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 Recommended Parts. Adjustable fuel regulation from 1 to 4 psi, 1965 and older U.S. manufactured California Certified vehicles, 1967 and older U.S. manufactured Federally Certified vehicles, 1967 and older Foreign manufactured vehicle, 1966 and newer U.S. manufactured California Certified vehicles, 1968 and newer U.S. manufactured Federally Certified vehicles, 1968 and newer Foreign manufactured vehicle. Thanks again fellows, for such informative posts. 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? To ensure this condition, the installation of a Holley 12-810 oil pressure safety switch is recommended This part is Backordered. Holley Fuel Pressure Regulator Rebuild 12-804 - YouTube The reg takes 3/8" fittings and the gauge takes 1/8" fittings. The '54 Bentley already has an electric SU pump back near the tank, and it's low pressure output is just about right for the two SU H6 type carbs. A larger tank might need two quarts. Decrease pressure by turning the adjustment screw counter-clockwise. Holley 12-803 Two Port Chrome Fuel Pressure Regulator - 1-4 PSI. The other possibility is that it is due to the higher pump pressure. 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. I have heard true lead (LeadMax2000 or simillar) may do this as well? Shop Fuel Pressure Regulators at Summit Racing. . . Adjustable fuel regulation from 1 to 4 psi, Holley 12-804 Reg, Fuel Press 1-4 Psi Pol. The issue is boiling points UNDER PRESSURE we are talking about here - though the BP article speaks to other issues of engine and carburetor design contributing to the vapor lock problem. Holley 12 803 instructions - United States manuals Step-by-step Tutorials Find many great new & used options and get the best deals for Holley 26-137 Adjustable Secondary Idle Lever at the best online prices at eBay! 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. if you were packing them in boxes they would look identical. The Holley 12-804 fuel pressure regulator is adjustable from 1-4 psi. Holley recommends applying PTFE paste to the NPT thread of the fittings before installation on these applications. Sign up for a new account in our community. Add to cart. Any of these heavier than gasoline petroleum distillates above will raise the vapor point of gasoline if mixed into it. ***The inlet pressure limitation is 7 psi. Loosening the regulator locknut and turning the adjustment screw clockwise increases the pressure. [endif]--> http://www.bp.com/liveassets/bp_internet/retail/retail_australia/STAGING/local_assets/downloads_pdfs/f/FN_modern_petro_vintage_engines.pdf,