"tomcas" wrote in message
...
jtaylor wrote:
"Steve Walker" wrote in message
news:4fFxf.24909$em5.17566@trnddc05...

Awhile back there was a discussion about a 4 cylinder 250. Here's a link
to video of a 6 cylinder 250cc Honda.

http://video.google.com/videoplay?do...091875&q=honda



I remember reading an article about that engine.

(No rockers, cam drove the valve stems directly.)

You can't get any less valve train mass than that. It must of had a very
high rev limit before the valves started to float.

I seem to recall that Honda had a watercooled 4-valve 50cc triple in
development that revved to _well_ over 20K. This was to replace the 22.5K
rpm twin that made 320 bhp/litre. See:

http://www.vf750fd.com/Joep_Kortekaas/1966.html

for some nice pics, including a completely disassembled 250 six motor, all
neatly laid out.