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Aug 24th, 2023
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Joined: Dec 2008
Posts: 21,871 Likes: 168
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 21,871 Likes: 168 |
Check the water pump. I once had a failing water pump on an MGB, and there was a significant vibration through the driveline. Also check the dynamo/alternator bearings.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Apr 2009
Posts: 198
L - Learner Plates On
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L - Learner Plates On
Joined: Apr 2009
Posts: 198 |
Recently I noticed that the clamp that secures the joint between the manifold and the catalytic converter was loose. I tightened it up and immediately noticed a vibration through the clutch on changing up. The vibration continued in top gear at 3k rpm
I eased the clamp - and the vibration disappeared.
Just a thought for you.
All the best
Tony
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Joined: Nov 2010
Posts: 167
L - Learner Plates On
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L - Learner Plates On
Joined: Nov 2010
Posts: 167 |
Because it happens at a specific RPM range, one is inclined to suspect the engine balance. Mine has a worn pilot bearing in the flywheel that allows the clutch to get off-center. If that happens I disengage the clutch once or twice to allow it to re-center. It usually shows up in top gear on the freeway. Pita. will pull the engine one of these days and replace the bushing!
'65 +4 four seater
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