Thread: Boring Measurements for the Pro
02-23-2011, 06:52 AM #1
Boring Measurements for the Pro
Ok I'm still an apprentice here so I expect I have done something wrong. As any wannabe engine builder I decided to pick up a bore gauge to take some readings, and I am looking at the Pro Cylinders to check the existing clearance as I'm going to be putting in Wisecos. I have one of these digital bore gauges, accurate to 0.001mm but I'm having some difficulty getting correct readings if someone has some experience with these I would appreciate any input.
So I have taken the 2.6" post with the 0.1" and 0.2" washers to give me a 2.72" post, or 69.088mm. I have then set that as the absolute value for measuring, and found that I am well under the 69.70X that I am looking for (technically it shouldn't fit in the bore).
What am I doing wrong here? Is it a calibration issue?
02-23-2011, 01:36 PM #2
02-23-2011, 02:25 PM #3
You need to set the gage with a set of O.D. micrometers or a "ring master setting gage" ideally.
I prefer the anolog gages because I find it easier to determine when I have the gage on the same "plane" as the bore.
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