Twin Cam Tappet Failure

This is a shot of a 2003 FLHTCI crankcase where a tappet roller had failed. It might be hard to tell from this picture, but this motor required new crankcases, new cams, new tappets (obviously) and a new oil pump, at the very least.

Before it stopped running, this motor had high performance cams, hi compression pistons, SE cylinder heads, etc. I don’t think it was covered by warranty.

Take special note of the bore in the case where the rear inner cam bearing used to be. It was so far gone that the cam wore through the inner support bearing and began running directly on the crankcase. There is quite a bit of wear in that area.