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oily bores
#38
Seven pistons came in a myriad patterns. That one seems to have 3 comp rings. And the relief below the 3rd is unnecessarily generous. Drillings need only break into the relief. The part below oil ring should be of reduced dia. Times have changed but piston types can be mixed, provided all weigh the same. Solid skirt pistons should be of reduced dia across the gudgeon dia as Austin originals, not fully circular. Tight gudgeons are a recipe for failed little end screws.
Vernier callipers and use of offer scope for many errors. Digital readouts give a false sense of super accuracy. Can be used locked with feelers as comparators.
On a vehicle which does not ping broken lands are unusual, and often done during assembly. I dunno if anything can be deduced from the angle of the breaks
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Messages In This Thread
oily bores - by steve davidson - 07-02-2018, 11:24 PM
RE: oily bores - by GK5268 - 07-02-2018, 11:57 PM
RE: oily bores - by steve davidson - 08-02-2018, 12:34 AM
RE: oily bores - by Colin Reed - 08-02-2018, 01:56 AM
RE: oily bores - by steve davidson - 08-02-2018, 06:08 AM
RE: oily bores - by Ruairidh Dunford - 08-02-2018, 09:44 AM
RE: oily bores - by steve davidson - 08-02-2018, 08:39 PM
RE: oily bores - by Austin in the Shed - 08-02-2018, 10:48 AM
RE: oily bores - by Charles P - 08-02-2018, 01:58 PM
RE: oily bores - by Reckless Rat - 08-02-2018, 08:57 PM
RE: oily bores - by Bob Culver - 11-02-2018, 07:58 AM
RE: oily bores - by steve davidson - 12-02-2018, 02:03 AM
RE: oily bores - by Bob Culver - 12-02-2018, 07:08 AM
RE: oily bores - by steve davidson - 14-02-2018, 07:47 AM
RE: oily bores - by Ruairidh Dunford - 12-02-2018, 10:18 AM
RE: oily bores - by AllAlloyCup - 12-02-2018, 10:53 AM
RE: oily bores - by Ray White - 12-02-2018, 02:45 PM
RE: oily bores - by Ruairidh Dunford - 12-02-2018, 03:32 PM
RE: oily bores - by "Slack Alice" Simon - 12-02-2018, 04:17 PM
RE: oily bores - by Colin Wilks - 14-02-2018, 10:22 AM
RE: oily bores - by steve davidson - 15-02-2018, 09:05 PM
RE: oily bores - by Ruairidh Dunford - 14-02-2018, 10:43 AM
RE: oily bores - by steve davidson - 27-03-2018, 03:35 AM
RE: oily bores - by JonE - 09-05-2021, 08:22 AM
RE: oily bores - by Nick Turley - 09-05-2021, 10:11 AM
RE: oily bores - by Bob Culver - 09-05-2021, 10:47 AM
RE: oily bores - by JonE - 09-05-2021, 12:27 PM
RE: oily bores - by Tony Griffiths - 09-05-2021, 12:50 PM
RE: oily bores - by John Cornforth - 09-05-2021, 09:05 PM
RE: oily bores - by Bob Culver - 09-05-2021, 09:25 PM
RE: oily bores - by Reckless Rat - 10-05-2021, 12:16 PM
RE: oily bores - by John Mason - 10-05-2021, 01:21 PM
RE: oily bores - by Ilmoro - 10-05-2021, 01:22 PM
RE: oily bores - by Reckless Rat - 10-05-2021, 01:47 PM
RE: oily bores - by JonE - 11-05-2021, 09:48 AM
RE: oily bores - by Parazine - 11-05-2021, 10:57 AM
RE: oily bores - by JonE - 11-05-2021, 11:42 AM
RE: oily bores - by Bob Culver - 11-05-2021, 05:20 PM
RE: oily bores - by Chris KC - 11-05-2021, 10:29 PM
RE: oily bores - by Chris Garner - 11-05-2021, 10:38 PM
RE: oily bores - by Bob Culver - 11-05-2021, 11:55 PM
RE: oily bores - by JonE - 14-05-2021, 10:32 PM
RE: oily bores - by John Cornforth - 15-05-2021, 09:58 AM
RE: oily bores - by Dave Mann - 15-05-2021, 10:12 AM

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