Diesel exhausts do cause cancer, says WHO

[ATAG_Bliss]

Originally Posted by MadBlaster

did you swap your camshaft?

No. There's no point. It's just a matter of weak seat pressure and high rpm's that wouldn't allow the valves to close fast enough to clear the oncoming compression/exhaust stroke.

The good thing about that engine is the valve seat is parallel to the piston. So the only thing that happens when the piston hits it is it slammed back into the seat/guide.

Any other engine and all there would've been a catastrophe.