Date: Tue, 16 Dec 2003 05:15:23 +0000 (UTC) From: craignopsam.apana.org.au (Craig Ian Dewick) Subject: Re: resonance and/or engine vibration at 90 kmh with my C900...
Robert Brown <roxbert.brxownnopsampnet.se> writes: >Craig Ian Dewick wrote: >> I've noticed that at almost spon-on 90 kph, my C900 develops very noticable >> vibration and/or resonance from the engine which only occurs within a very >> small speed window. The engine is running at a little over 3000 rpm at that >> speed. >You might also try the same speed but in a different gear (will result in >different engine revs used). My car has a 3-speed auto transmission, so that isn't always going to be possible. 8-) >Also try same engine revs (3000), but in a different gear (will give a different >road speed of course). >Idea is to see if you can localise the vibration to engine, gearbox, >wheels, or anything else, from these tests. Well I've been told very common issues are engine mounts needing renewal, and (eek!) problems in the block involving big-end and crankshaft bearings. Fortunately I do have a second engine available (from the donor car) but I don't have facilities to lift engines at present, so I'm trying to avoid very major tasks for the time being... Craig. -- Craig Ian Dewick (craignopsam.apana.org.au). http://nospam/~craig APANA Sydney Regional Co-ordinator. Operator of Jedi (an APANA Sydney POP). Always striving for a secure long-term future in an insecure short-term world Have you exported a crypto system today? Do your bit to undermine the NSA.
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