No more valve/seat problems!!

linearaudio · Post by **linearaudio** » Sat Sep 27, 2008 9:53 pm

How about using one of these to do away with the valve recession & additive headache:www.coatesengine.com

Post by **bmcecosse** » Sat Sep 27, 2008 10:05 pm

Easier link http://www.coatesengine.com/technology.html Interesting - but complex!

Post by **Gareth** » Sun Sep 28, 2008 12:57 pm

Oh my word, I got confused after the third sentence...

Post by **rayofleamington** » Sun Sep 28, 2008 5:13 pm

Rotary valves aren't especially new. IIRC Ducati and other bike engines (especially race bikes) have been using them for a while as they allow more RPM.
Essentially it's no different to a conventional 4 stroke but the valve rotates instead of going up and down to close.