[Healeys] Break in procedure

[Richard Collins]

Thanks Gary
Others have recommended Torco as well for a break in of new rebuild engine.

Regards,
Richard of KY
BN7

Sent from iPhone

On Jun 29, 2012, at 2:59 PM, editorgary at aol.com wrote:

> For break-in of a new engine, three key tips from my race car mechanic --
> molybdenum assembly grease on all rubbing surfaces, Torco break-in oil (I'm
> convinced from data, tests, and specs, it's the best stuff on the market
for
> those key few minutes of initial operation, and run it over various loads
> during the first 20 minutes, before changing the oil and filter and
retorquing
> the head. On the first point, the moly in the grease mixes with the
phosphate
> in the break-in oil to form a metal that fills in the microdepressions in
the
> rubbing surfaces, while the lubrication from the oil allows the rubbing
> surfaces to smoothly grind down the microscopic high points in the metal.
On
> the second point, all those micrometallic particles have to go somewhere,
and
> that's into the oil and into the filter, which is why both need to be
changed
> after the first 20 minutes of run-in. On the third point, if you can
arrange
> for time on a chassis dyno, that's the best situation (allows for varying
> loads while you can easily reach the engine to tweak carburetion, check
> timing, and visually make sure everything looks right). Alternatively,
after
> the car has run for 5-10 minutes after start-up, at least run it up and
down
> the street (a hill is even better).
>
> Gary
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