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Paul,
When the Champion resisters go high, new plugs are not needed. Resisters can be taken from old massive plugs. I change my resisters on the Iridium plugs whenever they go high. I have more than 1,000 hours on the plugs and they look like new. All of the resisters have been changed at least once.
Lorn
From: paul miller <paul@tbm700.com>
Date: January 24, 2012 11:06:44 AM EST
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Magnetos: Both Magnetos had to go back on and I've never timed them before so it took me a few days to get the equipment and make sure I did everything correctly. Today, with the help of Ed Martin we timed the newly IRAN'd mags to 22 degrees BTDC and then tested everything by hand to make sure we had sparks and in the right order. we rotated all by hand for a while just to make sure everything went well and because I had that previous Niagara adapter problem. I then had an idea to review a past LML note about resistors in Champion spark plugs. The top plugs were removed so I decided to check them for fun.
Out of the top 6 plugs, the resistances were 65,000 ohms to 2.5 Megohms. A few sites suggest 1500 ohms is normal and 5000 would be the upper limit. I did not test the bottom six plugs. They are probably original plugs with 500 hours, massives and I guess Chapter 7 means new plugs which are probably overdue.
Tomorrow we put fuel to the io550 and see how things work. Plugs on order.
Paul
Spruce Creek
--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,800 hrs, N31161, Y47, SE Michigan
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