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Cam lobe wear
#9
(04-02-2025, 08:09 AM)Duckbubbles Wrote: I see the fix is to replace the cam and followers and continue on.  Realize that all the metal bits that wear off the parts have to go through the oil pump before they get to the filter not to mention where they can migrate to before they are cycled through the oiling system.  I know most people don't want to hear it, but it seems to me at least and engine teardown to clean out the trash is the only long term solution.

Frank

This is the real concern for me as well.

The engine has several places that ball bearings are used, but the use of roller bearings on the axle shaft for the Cam Chain Sprocket right next to the source of the deteriorating cam lobes prior to this splash lubrication ever washing down to the sump and then run through the gears in the pump before finally getting to a 25 micron filter is terrible.

I'm scheduled to change out the Cam Chain Sprocket axles and bearings on a "normal" engine that has a long history of just being noisy very soon.
I'll document this repair, but have already inspected another "spare" WetHead I have with undamaged Cam Lobes and it has indications of bearing wear that could be a source of noise and impending failures.

More to follow...

New Axle vs used Axle from "normal" engine.                  Axle and sprocket carrier.                                                New Axles and Bearings to be pressed into carrier.
[Image: i-Rsg5f7G-M.jpg] [Image: i-wnhWpKC-S.png] [Image: i-z2nmqTB-M.jpg]
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Messages In This Thread
Cam lobe wear - by dravnx - 03-28-2025, 07:21 AM
RE: Cam lobe wear - by BobAin'tStoppin' - 03-31-2025, 06:26 AM
RE: Cam lobe wear - by dravnx - 04-01-2025, 04:04 PM
RE: Cam lobe wear - by Duckbubbles - 04-02-2025, 08:09 AM
RE: Cam lobe wear - by Boxflyer - 04-02-2025, 08:53 AM

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