Found an interesting site that explains the BMW VANOS system. Pretty slick. Mercedes used to use servomotors in the cam gear, I think, but I haven't been able to confirm that. http://members.aol.com/agspeed/vanos.htm Sincerely; Brian Haygood -- Email LIST problems to: scirocco-l-probs@scirocco.org. To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org