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valve chest breather/diagnosis of contributing issues

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valve chest breather/diagnosis of contributing issues
Robert Leigh Offline
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Joined: Aug 2017 Posts: 970 Threads: 22
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Location: Near Cambridge, UK
Car type: 1928 tourer (mag type), short chassis Gould Ulster
#2
26-04-2021, 03:25 PM (This post was last modified: 26-04-2021, 03:27 PM by Robert Leigh. Edit Reason: Additional comment )
Without breather holes the engine can't breathe and it will try to blow any piston leakage trough the main bearings. Any blow-by on the pistons has to go somewhere, usually through the valve chest and cover. For that reason your alloy cover does need holes. The amount of blow-by usually depends on the state of the pistons and bores.
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Messages In This Thread
RE: valve chest breather - by Robert Leigh - 26-04-2021, 03:25 PM
RE: valve chest breather - by leaf200 - 26-04-2021, 06:49 PM
RE: valve chest breather - by Howard Wright - 26-04-2021, 06:59 PM
RE: valve chest breather - by JonE - 26-04-2021, 07:56 PM
RE: valve chest breather - by David Stepney - 26-04-2021, 08:36 PM
RE: valve chest breather - by Andy Bennett - 26-04-2021, 08:39 PM
RE: valve chest breather - by JonE - 26-04-2021, 09:32 PM
RE: valve chest breather - by Graham Barker - 27-04-2021, 10:47 AM
RE: valve chest breather - by JonE - 27-04-2021, 03:12 PM
RE: valve chest breather - by Graham Barker - 27-04-2021, 08:40 PM
RE: valve chest breather - by Bob Culver - 28-04-2021, 01:30 AM
RE: valve chest breather - by JonE - 06-05-2021, 03:18 PM

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