"Newps" wrote in message
. ..
Stefan wrote:
Matt Barrow schrieb:

Thomas offers data and evidence, Lycoming offers anecdote and legend.

Lycoming offers running engines. Thomas offers words.


Lycoming and Continental offer no science whatsoever to back up their
recommendations. There are several companies that can show you hard
scientific data to disprove what the engine manufacturers claim.

Somewhere in John Deakins' "Engine Series" articles on AvWeb, there's a
nice graph that Deakins captured from his engine analyzer that duplicates
the conditions that manufacturers' claim to produce "Shock Cooling". It
pretty well debunks the claim. IIRC, he produced both total and immediate
shutdown of the engine as well as gradual power reduction.

IMONSHO, the manufacturers are covering their asses for poor design and
components.
--
Matt Barrow
Performance Homes, LLC.
Cheyenne, WY