There are 2 lengths of damper pistons so it is easy to find some in a pals junk box
Joe Curto 718-762-7878
www.joecurto.com
-----Original Message-----
From: David
davidtasa48@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com>
To: Listers mg-tabc mg-tabc@yahoogroups.com>
Sent: Sat, Nov 18, 2017 3:11 am
Subject: [mg-tabc] Carburetter Damper Piston
Dear listers, The latest MG Kurier, (official magazine of the MGCC, Germany) reprinted an MG Car Company CONFIDENTIAL SERVICE MEMORANDUM from 24 July 1959 which discusses the introduction of a new shortened carburetter damper piston. The claim is: the original dampers (AUC8103) could cause uneven running and a restriction in maximum speed but are interchangeable with the new ones (AUC8114) giving an improved performance. Alternatively, the old type can be converted to the later specification by machining .070 (1.78 mm) off the [u]lower[/u] face of the piston. This service memorandum, from July 1959, was for the MGA, Twin Cam and Magnette Mark III, so I assume it was referring to the 1 1/2 carbs. In checking my TC and TD carbs (all 1 1/4 types) all the pistons I have are the older longer types ( .378 or 9.60 mm.) The new type pistons should be .308 or 7.82 mm or .070 (or 1.78 mm) shorter than the older ones. My question is, before I go to the trouble of shortening a set of damper pistons to try and compare, has anyone heard about this and tried using the shorter damper pistons in 1 1/4 carburetters and does it actually improve running and performance?
David TC 3896 Bad Soden, Germany #ygrps-yiv-928494403 #ygrps-yiv-928494403AOLMsgPart_2_29d3305a-ca47-4fc9-bae9-d8a5b636443e td{color:black;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody #ygrps-yiv-928494403aolmail_ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody #ygrps-yiv-928494403aolmail_ygrp-mkp hr {border:1px solid #d8d8d8;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody #ygrps-yiv-928494403aolmail_ygrp-mkp #ygrps-yiv-928494403aolmail_hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody #ygrps-yiv-928494403aolmail_ygrp-mkp #ygrps-yiv-928494403aolmail_ads {margin-bottom:10px;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody #ygrps-yiv-928494403aolmail_ygrp-mkp .ygrps-yiv-928494403aolmail_ad {padding:0 0;}#ygrps-yiv-928494403 .ygrps-yiv-928494403aolReplacedBody 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