Miata Mailing List: November 1999, Message #768

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I'm considering adding adjustable cam gears on my 99 Miata. I have a concern 
though. I understand I cant advance timing like all others because timing is 
computer controlled and even if I could advance it throught CAS the ECU would 
automatically bump it back to stock. Is this the case with Cam gears as well?

As far as the valve cover, I see a lot of pre 99 Miatas (M1) with 2 peice 
valve covers. Where the section above the cam gears is removable, yet my 
valve cover is all one peice...Can I replace my 99 Valve cover with a -97 
valve cover? 

On cam gear adjusting, most cam gears use 3 bolts isnt the bottom bolt always 
going to be hidden by the lower section of the valve cover, or upper section 
of the timing belt cover? How do you get around this?

I looked in the archives for the answer to my questions, but I have had no 
luck...

TIA

Russ and "Max"
http://www.yourmiata.com/zbigpics/max.htm