Has anyone seen this on a oil slinger before?
Yes, I have the same wear pattern, but mine only half way around. I think its from cam walk. I did not have it when i used a flat tappit. It recently showed up after using a roller cam.Has anyone seen this on a oil slinger before?
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The issue is the crank damper gear end is too large for the slinger to seat flush, it sits about .040 high when I lay the slinger on the damper, when tightened it deforms the slinger forcing it back against the chain. No slinger will be used with this damper!My first experience with the slinger causing issues was found when freshening a very nice, pretty high dollar build(that the owner had assembled himself originally).
As it turned out the the damper/slinger/lower gear/crank/timing cover all needed some attention.
The engine had a Callies crank, ATI damper, Indy timing cover, and an American made SA Gear timing set.
My first hint that something was amiss after I pulled the damper and timing cover off was some minor chafing marks on the crank where the gear rides.
That’s when I discovered the deformed slinger wouldn’t slide over the slightly larger diameter of where the gear rides, which extended out past the gear.
I also saw to mild witness marks in the area of the crank, where the backside of the gear would rest.
I left the slinger out this time. I still can't explain why the slinger was an issue with the roller cam, but not the flat tappet. The only thing i changed was the cam and added a button. I use a Molnar crank and ATI damper. Could be similar issue as mentioned above, but my wear only went halfway around the slinger.Like I said, that was a good find, and something I’ll keep in mind on future builds.
Good little tidbit of info.![]()