Original Posted By: Jeff Boatright
Subject: Pietenpol-List: A65-8 Piston RingsDear Chaps,My Continental A65-8, has recently had a top end overhaul, following which Iam now investigating uneven cylinder temperatures. It might be a mixturething as plugs in one cylinder are lighter brown than others, but could alsobe due to piston rings. Each piston has two compression rings, and a third oil scraper ring. At thebottom of each piston is a fourth oil scraper ring. The only difference Ican see between the compression rings and the oil scraper rings is that thescraper rings have had one of the outside corners removed, leaving a verysmall square channel, or step. I believe that the top oil scraper ringshould have this step facing downwards, and the bottom one should have itfacing upwards. Could anybody please confirm if this is correct and maybeprovide a brief explanation?I also need a spare scraper ring because I have broken one, but one sourceof information suggests I "will be alright" just using an old compressionring in its place. Doesn't sound right to me - but would appreciate anyinput.Anybody know where I could get some spare scraper rings?Thanks and regards,Mike HayesG-BKVO---------------------------------------------------------------------------This message and any associated files sent by Denco Limited are confidential, and intended only for the addressee named above. If you are not the intended recipient, please notify the IT Helpdesk by telephone immediately on 01432 377368 (UK) or +(44) 1432 377 368 (international) or return it to us by e-mail quoting the name of the sender and the address. Please also be advised that you have received this email in error and that any disclosure and/or use of the information contained within this email or attachments is strictly prohibited. Any views or opinions expressed in this e-mail are solely those of the sender and do not necessarily represent those of Denco Limited, its divisions and/or subsidiaries, unless otherwise specifically stated. Please note that this e-mail and any attachments have not been encrypted. They may therefore be liable to be compromised. This is an inherent risk in relation to e-mail. Denco Holdings Limited its divisions subsidiaries and divisions of subsidiaries do not, to the extent permitted by law, accept any liability (whether in contract, negligence or otherwise) for any changes made to this e-mail after it has been sent by the original sender, any external compromises of security and/or breaches of confidentiality in relation to transmissions sent by e-mail. We cannot to the extent permitted by law accept any liability (whether in contract, negligence or otherwise) for any damage sustained as a result of any software viruses and it is therefore your responsibility to scan the attachments (if any) and carry out your own virus check before opening any attachments.________________________________________________________________________________