Why DOHC and not SOHC ??

[3sgte]

Yamaha did this in thier race prepped bikes in the mid 80s with a thing called TVIS.

Perhaps you mean YPVS?
;-)

Semi-authorative link for the curious:
http://www.d-murray.co.uk/rd350.htm

Regarding my previous post about my expectation/impression of cost to manufacture for the new #GR series, I ran across a bloomberg article:
http://quote.bloomberg.com/apps/news...fer=news_index

Personally I take the article with a grain of salt, it has some pretty heavy spin. It mentions casting costs, but does not address the additional costs imposed by all those extra bits in the cylinder heads. Still an interesting read though.

[o_man_ra23]

Fixed... TVIS is the variable intakesystem used in 1GGE, etc... my bad. +rep for pointing that out

Cheers, Owen

[roadsailing]

TVIS is not variable induction length like goodness forbid "fords"

TVIS blocks off one inlet port under 4400 RPM (on a 4AGE) to improve air velocity and cylinder filling at low RPM on certain models of 4AGE, 1GGE and 3SGE.

- rep for bad info

(just kidding )

[o_man_ra23]

Righto, well its a similar idea to the frauds... my bad again... + rep for pointing out, and will fix the bad post.

Cheers, Owen