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Old 05-16-2018, 11:19 PM   #1
Corley
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Join Date: Aug 2011
Location: Battle Ground WA
Posts: 293
Default Dial back inaccurate

I've modified a Honda distributor to fit Elvira, and in playing around with the timing, I noticed that my almost new HF dial back timing light reads about 40 degrees advance, when the Nurex timing tab shows 30 degrees (when dial back set to 0.) I then tried an old Chraftsman dial back, and it shows about 34 degrees when I see 30 degrees on the Nurex timing tab.

After finding 4 different tachometers all read different rpms, I'm becoming very skeptical about the accuracy of these electronic tools. Any thoughts on what I should trust?

(Honda distributor has both centrifugal and vacuum advances. I wanted to experiment with the vacuum advance.)
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