IP advance with RPM - Diesel Bombers

Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

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Old 02-19-2018, 08:33 PM
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Join Date: Jan 2011
Posts: 9
Default IP advance with RPM

At what point should the injector fire at idle and at 2K RPM?
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Old 02-20-2018, 02:22 PM
Thread Starter
Join Date: Jan 2011
Posts: 9

Fresh 7.3 IDI and a fresh IP.

How is the injection timing supposed to change with RPM? I have asked this question many ways and the only answer I get is "9 degrees at 2K RPM". But the engine doesn't always run at 2K RPM. What should it be between idle and 2K RPM?

I have a Kent Moore J33300 Tach-N-Time with both mag pick up and timing light.

This is the first one I have needed to time.
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