Is there a "how to.." for crank measurement, and bearing verification? |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Is there a "how to.." for crank measurement, and bearing verification? |
malcolm2 |
Dec 16 2019, 11:07 PM
Post
#1
|
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? |
malcolm2 |
Dec 21 2019, 02:47 PM
Post
#2
|
Advanced Member Group: Members Posts: 2,738 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
OK, maybe not the super duper accurate tools but I feel better after these measurements. They are the Mitutoyo brand... so this is what I got.
#1 main is 0.0072 under #2 main is 0.0076 under #3 main is 0.0072 under #4 main is 0.00925 under Rod journals are all 0.0084 under So I had already bought some 0.010 under (0.25mm) main bearings, so I am gonna get some plasti-gauge and see where the clearance ends up. What are the thoughts of the group?? |
Lo-Fi Version | Time is now: 29th April 2024 - 01:15 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |