RX8 Engine \'Knock\'

[rx-dave]

Strange one this!! Had a call from a local RX8 owner / friend about a noisy engine, it was turning over a lot slower than usual and sounded like a bottom end knock on a piston engine when running but it seemed to run fine.
I did a compression test with good results, low 7\'s on all faces.........any ideas??
Dave.

[HaywardRotary]

Bearing failure is very likely cause of this.
Every RX8 engine we pull apart has major bearing wear.
We strongly believe it is the type of oil being used as 5/30 dexelia is just too thin.
10/40 is the way to go.

[rx-dave]

Thanks Carl, i had a feeling this is what has happend.
Dave.