Posted by gtk on Thursday, January 02, 2003 at 1:49AM :
In Reply to: Re: 230 cu.in flathead posted by steve on Thursday, January 02, 2003 at 0:34AM :
from an external tank. Manual shows the type of system used for a bearing leak down test. The "Standard Guide to Automotive Restoration" also covers this topic and has plans on how to build a pressure tank from an old fire extinguisher. Basically you need a tank that can hold oil and approx. 20 pds pressure. Hook up the tank to one of the oil gallery plugs on the side of the engine. Pressurize the tank to 20 pds and this will fill all the oil passages and provide lubrication to the main, cam and rod bearings. You will see the pressure on your dash gauge. Disconnect the line and crank with the plugs out. If the pressure stays up the pump is primed and your ready to start. You can't prime it with the screwdriver in the distributor. This is really the most important part of starting a rebuilt engine as the assembly lube is not under pressure and quickly gone so you have metal on metal on those new bearing surfaces. I wonder how many good rebuilds get damaged during inproper startup.
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