Will buy again if I need another one for a different project. Will changing the orientation change the preset pressure setting (checkball falling instead of raising)? He finally achieved significant improvement by fitting a vent to the carburettor top (which is routed away and under the car for safety). 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. Purchased the regulator from Baxter, unit arrived in 4 days.. That was in the 1990s, so you can project to more current times and suspect we have something more sophisticated now. The point is the 0-140 regulators (they are all coming out of China now-a-days) will not regulate lower than about 20 reliably so you need a staged system - and even Holley says so on the 803BP design set up. Rich boys replaced their 216 stovebolt 6's with GMC 270 or 302 sixes with a performance "full race" cam. The other possibility is that it is due to the higher pump pressure. Reviewed in the United States on September 4, 2017. At first it seemed fine, set it to 1.5 PSI and away we go. 03-28-2012, 03:04 AM. Please refresh and try again. It looks like WhatsApp is not installed on your phone. Discussion in 'The Hokey Ass Message Board' started by striper, Aug 12, 2009. I commented that it was already vented by the clearance around where the float needle projects through the top but he advised that this was not enough and the vent needed to be at least a 1/4" tube and that he could see it venting vapor. Sign up for a new account in our community. We work hard to protect your security and privacy. Exclusive, high-quality Global Featured Holley Transmission Kickdown Holley 12-804 Carburetor Fuel Pressure Regulator 1 To 4 PSI - Kartek I do wish there were some stamped values on the adjustment screw like other models I have seen. Refineries have been doing this for decades. 1 oz per gallon - not more than 2 is usually in the right "goldie-locks" range. Holley 12-840 HP Billet Carbureted Fuel Pressure Regulator You'll find they both have the same initial boiling point - been there and done it. Designed using state-of-the-art technology and with customers in mind. To add the following enhancements to your purchase, choose a different seller. The Holley 12-804 fuel pressure regulator features 3/8" NPT in/out ports. Ships from and sold by Performance Guarantee. Recommended Parts. I would welcome your advice on this - with apologies for the length of this post. Estimated Ship Date: Today. Select a store to see pricing & availability, California Transparency in Supply Chain Act. Q: Octane is an actual chemical which would be at the light end of the scale for gas, kerosene would be at the heavy end. Driving on a warm day in heavy stop start traffic it started vapor locking on a climb - using 10% ethanol fuel with no additive . If yes what size should I, A: Enhancements you chose aren't available for this seller. Holley 12-807 Fuel Pressure Regulator Diaphragm Repair Kit Adjusting Holley & Demon Mixture Screws; Holley Specs HP Series; Edelbrock Carburetor Specs; Holley Double Pumper 4150 Specs; Carter Competition Series AFB Specs; Company Info. I have just this Spring started taking temp. I have a electric pump at the tank to try and speed up the fuel cooling process but if you have a 100 deg F day you may have fuel near 100 deg F in the tank. . The intent being to get "cool" fuel to the carburettor bypassing the areas where the system heats the fuel. I would like to try IMCT, how is it sold? Discussion in 'The Hokey Ass Message Board' started by oldrelics, Oct 12, 2010. Please make sure that you are posting in the form of a question. My bypass line has a shut-off valve that I can use to manually adjust the pressure, but when air bubbles develop within the input fuel line, this valve requires adjustment to maintain the fuel pressure. As the car is parked Temperature. Includes initial monthly payment and selected options. 4.25 out of 5 stars. 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. => https://www.holley.com/data/
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holley 12 804 adjustment