Joined: Jun 2022 Posts: 129 Threads: 21
Reputation:
1
Location: Exeter
26-07-2022, 01:47 PM
(This post was last modified: 26-07-2022, 01:49 PM by JoeRowing.)
Yet another Question from your enthusiastic new owner...
With petrol and electrics sorted she (yet to be named) is now running....
... But there are a few odd noises. I'm not sure if these are "normal A7 ruby" noises or "loose flywheel uh-oh" noises.
Anyone want to offer an opinion or non-binding advice?
Joined: Aug 2017 Posts: 698 Threads: 29
Reputation:
16
Location: Beautiful Northumberland
Car type: 1933 RP Saloon (aka Mildred)
26-07-2022, 01:58 PM
(This post was last modified: 26-07-2022, 01:59 PM by Andy Bennett.)
Others will offer better advice than I can, but might ask things like, does that background knocking change if you put your foot on the clutch pedal? But perhaps don't run it again until those more knowledgeable have contributed as you might get a 'don't whatever you do start the engine again' reply.
Enjoy yourself, it's later than you think!
Joined: Jun 2022 Posts: 129 Threads: 21
Reputation:
1
Location: Exeter
Not much different - I'd have to start it again to double check...
Joined: Aug 2017 Posts: 405 Threads: 18
Reputation:
2
26-07-2022, 03:09 PM
(This post was last modified: 26-07-2022, 03:09 PM by Charles Levien.)
Sounds to me like tappets or ‘little end’ rattle — has the engine been reconditioned recently?
If so, unlikely to be the latter.
Sounds to me like tappets or ‘little end’ rattle — has the engine been reconditioned recently?
If so, unlikely to be the latter.
Joined: Jun 2022 Posts: 129 Threads: 21
Reputation:
1
Location: Exeter
26-07-2022, 04:44 PM
(This post was last modified: 26-07-2022, 05:42 PM by JoeRowing.)
Well, I've checked the tappets and though there are a few wear spots on the followers the gaps are spot on. 6 and 7 thou in the right places.
If it's little-end who is the go-to for new bushings? or is it new piston time?
I have a set of Renault rods and pistons that I was going to use in a spare engine but if I recall correctly they'll be to wide and too long for this standard engine.
I wonder if piston slap might be a culprit as it hasnt run for ages - but i dont know if that's a thing with sevens?
Joined: Aug 2017 Posts: 1,453 Threads: 21
Reputation:
15
Location: The village of Evenley
Car type: 1934 Austin Seven RP Deluxe
Does the clacking sound go after the engine has warmed up?
Joined: Jun 2022 Posts: 129 Threads: 21
Reputation:
1
Location: Exeter
26-07-2022, 06:07 PM
(This post was last modified: 26-07-2022, 06:13 PM by JoeRowing.)
Not particularly. Getting normal oil pressures I think. Very high on first starting then it tailed right off to very little at all at tickover and more at higher revs. So I had discounted big ends, it's a bit of a rattle so I might try listening for little end click and then sticking a wooden dowel against the dynamo
Joined: Dec 2017 Posts: 1,132 Threads: 66
Reputation:
8
Location: Nottinghamshire. Robin Hood County
Car type: Austin Ruby Mk1 1935
Others will know better but unless it is a pressure fed crank the oil pressure will not change with big end wear.
John Mason
Would you believe it "Her who must be obeyed" refers to my Ruby as the toy.
Joined: Aug 2017 Posts: 1,453 Threads: 21
Reputation:
15
Location: The village of Evenley
Car type: 1934 Austin Seven RP Deluxe
I think you ought to check for sticking valves, either whip the head off and check to see if they are closing when turning over on the handle or do a compression check...mine is suffering from sticking valves and the sound is very familiar!
Joined: Aug 2017 Posts: 405 Threads: 18
Reputation:
2
Joe, I think if it was me I’d take the engine out and have a good look inside. I’m not sure I would run a car making that noise without knowing exactly where it was coming from.
Not a bad job really — about eight cups of tea should see it out.
Charles
