Any benefit of titanium valves? I am trying to figure out the best performance and reliability for the $$$, anyone have opinons on titanium valves?

 

They are for very high RPM motors, 8000+. Not a street part at all.

Spend your money elsewhere.

 

I have run them on the street, but I will tell you that it sure isnt worth the money spent. I also noticed that I had to do valve jobs much more often. I also agree with RB83L69, not really a street part unless you have money to burn. They are great if you are running a small cube motor at near failure RPM.

 

alright. I was wondering what was so special about them.

 

The biggest advantage to them is their lighter weight. With lighter weight valvetrain parts you effectivly up the working RPM of the engine. Your basically making upping the RPM at which valve float will occur. Also, being of a lighter weight the valve train takes less abuse from trying to accelerate the mass. And last but not least, the material is of a different density, therefore the change in natural frequency. When you look at a working valvetrain, at any RPM it has a working frequency. If you change the materials in the valvetrain you can change that factor. At different RPM's, materials has a resonant frequency that if maintained at their critical working frequency, it will fatigue the metal or material. That is why Ti is used primarily in high RPM engines/devices.