Quote Originally Posted by green91
As far as moving parts, timing components, etc yea they are a great design and its neat how they get the power out of a smaller displacement engine doing so. But they do have their faults also. Ive been in several newer rx8 that have nearly no compression with low miles. Look at how many FD and FC have had an engine replaced by 100k.. hell even mazda has extended warranties on the renesis just to keep customers happy since the motors are failing.
The Renesis did have a flooding problem. You have to warm them up fully when you crank them. Never start them up, then just turn them off. Once in a while, they will flood if you do that.

The FD's suffered from only 2 issues - not enough cooling, and not enough oiling. Again, they needed to be run harder, and the cooling system (oil and coolant) was not adequate for non-wot applications.