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Old 06-04-2011 | 05:25 AM
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DarZeelon
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From: Rosh-HaAyin, ISRAEL
Default RE: How important is the break in procedure?

ORIGINAL: PlaneKrazee

I always thought a heat cycle type break-in would stress relief parts and do a final microscopic polish of mating surfaces.
PK,


As I wrote earlier, the first part of your post; heat treating does not take place at the temperatures the parts of the engine attain during break-in. So it would not be wise to expect them to be stress-releaved to any extent.

The mutual polishing of the moving parts does happen; so sealing is optimized and friction minimized.


EDIT: Typo
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