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911 rockers wear level at break-in period
Hi all.
I have a question regarding wear level during break-in of rockers and camshafts. Is it likely that the rocker in the picture eventually will wear and mate perfect to new camshaft? Pictures taken after 20 minuttes initial break-in at 2000rpm’s with DRIVEN break-in oil containing 2400ppm ZDDP. Rockers grinded at a very solid and reputable Porsche workshop. 
Last edited by Classic 911; 10-12-2020 at 02:14 PM.. |
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10-09-2020, 02:00 AM
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911 rockers wear level at break-in period
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Last edited by Classic 911; 10-12-2020 at 02:11 PM.. |
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10-09-2020, 02:09 AM
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Location: Gulf Coast FL
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Wondering what was the reason for the tear down after 20 minutes of runtime?
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10-09-2020, 07:56 AM
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911 rockers wear level at break-in period
Quote:
Inspection to see the development of the break-in process on both camshafts and rockers. Last edited by Classic 911; 10-12-2020 at 02:12 PM.. |
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10-09-2020, 08:14 AM
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Location: Gulf Coast FL
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What do the cams look like?
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10-09-2020, 08:33 AM
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911 rockers wear level at break-in period
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Last edited by Classic 911; 10-12-2020 at 02:12 PM.. |
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10-09-2020, 04:35 PM
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Location: Boulder, Colorado
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What sort of lube did you dribble on the cam lobes before you installed the rockers?
Did you wipe off all the oil on that cam lobe before you took a picture of it? |
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10-09-2020, 05:48 PM
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Location: Edmonton
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Was there a coating on the cams to begin with? Does your fingernail catch any of the markings?
__________________
Matt B '73 911E |
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10-10-2020, 08:47 PM
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Drive the car for 10,000 miles and find out.
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72 Carrera RS replica, Spec 911 racer |
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10-10-2020, 09:15 PM
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Where is the cam from. I have heard WebCam has had some issues with lobes ground on an angle....
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10-11-2020, 07:13 AM
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Does not look nice. Since it is all apart may as well find some different rockers and cams before reassembly. Sucks, but sh%t happens.
Talk to your vendors. |
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10-11-2020, 06:02 PM
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911 rockers wear level at break-in period
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Last edited by Classic 911; 10-12-2020 at 02:10 PM.. |
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10-12-2020, 09:17 AM
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Quote:
Looks to me like contaminated oil or rocker bushing issue. |
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10-13-2020, 11:52 AM
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1986 Porsche 911 turbo
