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Running in with todays pistons
The running in rituals of old were based largely on the needs of often tight hand scraped big ends.

JCL, major Australian ring manufacturer, recommend that pressure fed engines are warmed up at brisk idle to fling oil then taken for a run and rings deliberately loaded in brief bursts at medium speed.Aimed mainly at plated rings. A very early change recommended, not beyond 300 miles.. (Can use filtered old oil, or minimum quantity new)
With a Seven probably more than enough oil splashed about at any revs.
The cyl pressures in a stock engine much lower than moderns.
I suspect most of the metal in oil comes from timing gears. A magnet seems worthwhile. VWs ran 3000 mile oil changes with no filter.
Particles mainly wear the crank but original non hardened good for 100,000 miles or so, and hard Phoenix should be everlasting.

I am not sure that simple draining carries away much, but, except very first, can be dribbled thru a modern filter and reused. At no pressure much will be captured.

Attitudes to spending on Sevens are now very different from years ago! It has become rather like religious offerings!

Messages In This Thread
Running in with todays pistons - by Steve Bryant - 16-08-2017, 01:26 AM
RE: Running in with todays pistons - by GK5268 - 16-08-2017, 06:51 PM
RE: Running in with todays pistons - by Bob Culver - 17-08-2017, 06:44 AM

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