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: 2,739 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? |
Mark Henry |
Dec 17 2019, 09:24 AM
Post
#2
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
I only use STD cranks or standard (under) cranks I get turned down to .010, reason is I won't use a crank that ever had a burnt journal.
Cheap magnaflux, hold a crank by the nose, give it a solid rap with a hammer and it should ring. If it's just a thud it's cracked. This doesn't replace magnaflux, but I've never had a crank fail that passed the ring test. |
Lo-Fi Version | Time is now: 29th April 2024 - 05:28 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 ... |