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#1
12-02-2025, 08:08 PM
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You'll need a dial indicator and mag base to measure backlash.
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1967 Firechicken, 499", Edl heads, 262/[email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#2
12-03-2025, 10:23 AM
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The only change I make when I take these measurements is I use motor oil, 30W, or 20W-50, rather than 90Wt. on the discs for lube. This is just for these measurements. In my experience, using 90 wt. artificially reduces the backlash and it's hard to get a good measurement. Meaning when you get it assembled and operating, the backlash is too much. Try to get the stylus in the dial indicator as straight as possible on the pinion gear when measuring. In my experience, all new clutches will restore the backlash unless the gear teeth are really worn. Good luck.
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#3
12-03-2025, 01:06 PM
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Price range and brand for dial indicator
This is one tool that I do not have.
I see Mitutoyo and Starrett sold on Amazon. I don't know what features to desire or appreciate when shopping for this tool. The magnetic base seems easy to figure out. |
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