valve surface treatment
Thanks for the info, Rich. I will definately put in stiffer springs. My next question is about the surface treatment of the ti valves. Is the titanium simply anodized to form a layer of ti oxide as done with aluminum, or is there some other process? Also, how long does the surface treatment actually last under running conditions. If i'm not mistaken, Al hard anodizing produces AlO2 to a depth of aproximately 0.0005 to 0.0015". If this is the case for the valve surface treatment, wouldn't it be worn thru in short order anyway? In Eric's valve train article he mentioned that the stock valves had cast heads inertia welded to the stems. Is the treatment of the cast ti diferent from that of machined billet ti? I know there are a lot of questions here, but valid information seems to be in short order. Unfortunately, there seems to be a wealth of misinformation. Some of the things I've been told at the track are so wrong its scary. Again, thanks for sharing your knowledge with us!