check this site for more detailed specs .... click here

its got steel valves for intake and exhaust

 

I agree .........good post Ridley. I have read a lot and talked with more than a few engine makers about Ti valves, as I am considering using them in a project quad engine. I pretty much heard the same as what you have described in your post. Having said this ...... I just talked with an engine builder who does automotive high tech stuff.(competition Porches, GTR-1. and Lemans series cars) he has been having no problems with the exhaust valves (ti) but quite a bit of problem with the intakes,,maybe because of the head to stem ratio being larger, valve angles....am not sure ...nor is he. LOL .............go figure. Could be a lot of things not directly related to the use of Titanium too, given how tweaked these engines are. Let's not forget that one of the primary reasons for using Ti in the valve train is to achieve serious RPM gains......which has it's own littany of problems. When stretching engines to the max, there are a lot of unknowns to overcome, not the least of which is heat differentials in the heads, the resultant expansion and contraction of metals at different rates, the increased friction of higher speeds, the failure cycle of spring materials, etc, etc.

It becomes hard to generalize about one aspect of a motor failure when so many things have changed while trying to achieve ultimate performance. What might work at 12,000 rpm's may be a disaster at 12,800 or 13,500...... Keeps all this fun and lots of people gainfully (or not lol) employed.