Just as added information, VAG does use variable valve timing on
the new 2.8l V6 in the Audi's and Passat's...It uses a hydraulic
chain tensioner that in essence varies the length of the timing
chain between the intake and exhaust cams, thus changing the
timing of the intake cam. The exhaust cam stays constant though,
as it is driven by cam belt.
BTW, I thought VTEC was primarily a variable valve lift system, not
so much as timing. BMW's VANOS system, from what I
understand, is the best variable valve timing system around, very
smooth and consistant and can change the timing of intake and
exhaust.
-----------------------------------------------------
Kris Rayner
1989 GTI 16V
1981 VW Scirocco S - Soon to be a 16V :)-
"I do nothing in moderation but work."
-Charles Dickens
http://www.fix.net/~trzracing/web/
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