James,
At 08:52 3/03/98 +0000, you wrote:
>
>Do you not mean running in. From what a friend tells me from
>doing his 2.5Pi you need to break-in the engine, that is, use
>almost no torque, and leave off the top revs. 2/3 throttle
>max. ...
I understood that you should red-line it a bit, under little or no load, to
establish the running limits. The conn rods stretch at the top of the
stroke, and the amount of stretch depends on their deceleration. Therefore,
if you avoid high revs during run-in, the ridge at the top of your cylinders
will extend too far down, and you will risk breaking a ring if you red-line
it sometime after it is run in.
Any opinions to the contrary?
Allen Nugent
Graduate School of Biomedical Engineering
University of New South Wales
Sydney 2052 Australia
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