Is there a "how to.." for crank measurement, and bearing verification? |
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Is there a "how to.." for crank measurement, and bearing verification? |
malcolm2 |
Dec 16 2019, 11:07 PM
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#1
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Advanced Member Group: Members Posts: 2,738 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
I am gonna make a 2 liter from my 1.8. So I have a refreshed 71mm crank that I have been told has been ground to -0.010.
I measured as best as I can with a digital mic and got about 59.66 on the mains and 49.65 on the rod journals. Where can I find the STD specs and ranges ? were they 60 and 50, respectively? Since I know nothing about this crank, how can I verify the 71 mm measurement? |
Superhawk996 |
Jan 15 2020, 06:00 AM
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#2
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914 Guru Group: Members Posts: 5,762 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Rod measurements align a whole lot closer to what I remember measuring. In hind sight I wish I had measured all journals.
Based on the number of significant digits in the measurement, it would appear that your buddy measured with a digital micrometer with more resolution than my vernier micrometers. I would have loved the opportunity to compare my measurements to his. All engine specs from factory manuals can be found here. http://p914-6info.net/Manuals.htm I don't know who's site this is but it is an awesome resource. |
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