>        So, for 2001, the 2.8L VR6 has gone from 12 to 24 valves,

Due to its oddball SOHC design, the VR6 cannot be fitted with 4 valves per
cylinder unless it uses rockers to actuate them, as each camshaft operates
both inlet & exhaust valves of one bank of cylinders.  There won't be
enough room, I believe (never actually having seen a VR6 engine or even a
decent photo), to fit true DOHC, which would require 4 camshafts in one
head!

I guess it must use rockers as it is now anyway, or are the valves aligned
along the engine axis as in most fours?

Andrew Grebneff
165 Evans St, Dunedin, New Zealand
fax 64 (3) 479-7527
<andrew.grebneff@stonebow.otago.ac.nz>
VW van, Toyota diesel & mollusc nut
Macintosh 7500/200/64, 6116/60/24