by Ron Fraser in the March 2007 RootesReview: From the Shop Manual I get the following information: Flow rate = 15 gallons per hour Fuel = 6 lbs/ gal 15 gal/ hour = 90 lbs/ hour Pressure or delivery head = 48 in 48 in H2O = 1.73 psi The convention is that at wide (more…)

by Ron Fraser in the October 2006 RootesReview: The oil pressure switch to activate the fuel pump is definitely one good way to address the problem of a fuel pump continuing to run after an accident. Today’s vehicles all use an inertia fuel shutoff switch to shut the fuel pump off in an accident. Inertia (more…)

by Dave Reina in the July 1991 RootesReview: Did you know that the inside of your gas tanks (both Alpines and Tigers) were painted with a black paint at the factory? This coating has perhaps allowed them to exist to their present age without rust holes. However with the age of all our cars being (more…)

by John Logan in the May and June 2006 RootesReview: Part I This section addresses how to select the correct carb for your application, demonstrate the steps for calibration, show how to set the floats and adjust the idle mixture and speed. The Holley carburetor can be calibrated to the engine for optimum fuel economy (more…)

by Fred Baum in the May and June 2006 RootesReview: About ten years ago I gave up on my Holley 4-barrel carburetor and purchased an Edelbrock four-barrel. The Edelbrock Performer Series carburetors are a redesigned Carter unit that gives near electronic fuel injection economy while maintaining wide open throttle performance. This design is very reliable. (more…)

originally published as Because Three Won’t Fit; by Jim Morrison in the April 2000 RootesReview: When I started the restoration of my black 1966 MklA Tiger in 1992, I wanted to have something special under the hood … dual four-barrel carburetors. I had seen two other Tigers with dual quads and had to have one (more…)

by Phil Lindsay in the July 1979 RootesReview With the current gas shortage, the use of vacuum operated secondary four barrel carburetors (such as the 600 CFM Holley R-1850) has become an attractive alternative to those gas guzzling double pumpers with mechanically operated secondaries. Properly set-up, the vacuum secondary carburetor can offer the fuel economy (more…)

by Phil Lindsay in the July 1979 RootesReview In order to better cope with the California gas lines, I have installed an extra gas tank in my Tiger. My additional tank comes from the early series Alpine I and II. The tank is a horizontal unit which holds approximately 12 gallons and can be mounted (more…)

by Dave Spiwak in the June 1995 RootesReview After having my fuel supply cut off suddenly while driving, I found that small flakes of debris were blocking the fuel outlet tube at the center of the crossover pipe between the gas tanks. The original coating inside the tanks flakes off with time and these flakes (more…)