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Path: utzoo!decvax!genrad!panda!talcott!harvard!seismo!hao!noao!terak!doug
From: doug@terak.UUCP (Doug Pardee)
Newsgroups: net.aviation
Subject: Continental O-470 valve problems
Message-ID: <508@terak.UUCP>
Date: Wed, 17-Apr-85 15:16:46 EST
Article-I.D.: terak.508
Posted: Wed Apr 17 15:16:46 1985
Date-Received: Fri, 19-Apr-85 09:40:56 EST
Distribution: na
Organization: Terak Corporation, Scottsdale, AZ, USA
Lines: 14

The current issue of Aviation Consumer reports a mandatory service
bulletin from Continental covering O-470 (Cessna 182) engines and
cylinder assemblies built (or remanufactured) by Continental since
March 1984 (approximately 75 engines & 40 cylinder assemblies).

Seems that they were erroneously putting stainless steel exhaust valves
(P/N 626540) instead of chrome-plated valves (P/N 637881) into the
engines and cylinder assemblies, which have Nitralloy valve guides.
The guides chewed up the valves, putting metal particles into the oil.

So far, Continental has been picking up the bill for the repairs,
including 15 engines completely replaced.
-- 
Doug Pardee -- Terak Corp. -- !{hao,ihnp4,decvax}!noao!terak!doug