On Fri, 04 Apr 2008 06:19:58 GMT, "Lew Hodgett"
wrote:


"Bruce in Bangkok" wrote:

read a reference to one of your posts, quoted in part by Roger, that
sounded as though the RPM was only unstable at low RPM, I remember
something about 1,000 RPM.


Most diesels need to idle in the 1300-1500 RPM area in order to
generate enough waste heat to prevent
"wet-stacking" which will cause glazing of the cylinder walls,
creating a VERY expensive repair.

Lew

And most boat engines need to idle down to about 700 - 800 RPM when
shifting to prevent imposing too large a load on the gearbox.

By the way, while I was in Singapore I adjusted the governor on a
Gardner 6 cyl. engine - 1.500 RPM full throttle. Idle at about 600
RPM.


Bruce-in-Bangkok
(correct email address for reply)