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Date:  12-13-2010
Number of Hours:  1.00
Manual Reference:  
Brief Description:  Engine Runup

I called Bob Barrows and related the oil pressure issue, and he suggested trying the runup and shutting the engine off, if I didn't achieve oil pressure in 5 seconds. Bob wasn't sure if the the EFIS was working correctly, and in joking fashion, we talked about alternative methods of verifying oil pressure, including a 10 foot long nylon tubing manometer tacked to the side of a barn. I didn't have any convenient alternative means of verifying the oil pressure gauge, so I decided to go for it. I installed the bottom plugs and spark plug wire couplings, and fired it up. It started fairly easily and achieved 23 psi at 700 RPM. I shut it down, and called Bob, who thought that was a little low, but not dangerous. I then went through Bob's engine break-in procedure, up to 1850 RPM, which gave me 50 psi of oil pressure. Bob's spec for oil pressure is 60 - 80 psi at 2000 RPM, so I'm close. At the next runup, I'll get to 2000 RPM and see what number I'll get, and give Bob a call on that. Maybe, I can adjust the relief spring or something. Otherwise, all the numbers seem to be working. Not much fuel pressure without the fuel pump on, but the fuel pressure responds quickly to turning on the pump. The oil temperature remained low, but I only ran the engine for a few minutes at a time, and did gradually increase. The CHT's are cooler on the front cylinders and warmer on the rear, but never went above 360 deg at 1850 deg. There was minimal RPM drop between the electronic ignition and the Slick Mag.
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It Lives!

It Lives!

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50 psi at 1850 RPM.

50 psi at 1850 RPM.

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