I have been told the old Aston Martin straight 6 had the same system as
well. The guy that told me said it was a major pain to assemble it all,
measure it, disassemble, grind, reassemble , and check again. Maybe one
reason so many were changed for the Jaguar straight 6 which used shims.

Tom wrote:

Greg O wrote:

'05 Ultra Classic
"jtaylor" wrote in message
net.ca...

"Tom" wrote in message
...

jtaylor wrote:

"Bart D. Hull" wrote in message
t...

Interesting,
Even looks like 4 valve heads. Too bad you can't really see
how the valve train was put together. (Shim over bucket,
shim under bucket or shim on valve stem.)

Cam on valve stem, no shim.

Really? Have another look.

Hmm, could be memory and/or eyesight playing tricks.

I do specifically remember reading the bit about grinding the end of the
stem to adjust clearances, but those twelve bits above and below the valve
springs do look like they could have a pair of "buckets" - is that the
technical term...

(

You could be partly correct. It is very possible that it had bucket style
cam followers without any method of shimming the valve clearance.
Greg


Actually it had can type followers, hollow but with closed ends.
http://shopswarf.orcon.net.nz/hondavalvegear.jpg
The pic is of the 250cc four that the six was a scaled down version.

As for setting valve clearances by grinding the valve stem ends,
the Ford flathead V8, for the majority of its life had that system
of adjustment as did other Ford engines.

Tom