Narve N Posted June 7 Share Posted June 7 A friend here in Norway has this 31 Nash 871 Convertible Sedan that despite its renowned 9-bearing crankshaft has annoying vibrations at certain road speeds, e.g. around 40 mph. Has anyone experienced disintegrating vibration dampers on these engines or have other tips for what to investigate? Link to comment Share on other sites More sharing options...
edinmass Posted June 7 Share Posted June 7 Is it worm drive? Link to comment Share on other sites More sharing options...
Narve N Posted June 7 Author Share Posted June 7 It is not my car so I do not know it in detail, but it is an all original mechanical configuration for the year. Link to comment Share on other sites More sharing options...
HarryLime Posted June 7 Share Posted June 7 Edinmass, If it is due to a worn worm drive , can the worm wheel be reproduced today ? The prettiest Nash I've ever seen . LIke the paint scheme. Link to comment Share on other sites More sharing options...
Narve N Posted June 10 Author Share Posted June 10 The rumbling persist with the clutch depressed. It is not likely it is the rear end. Link to comment Share on other sites More sharing options...
31nash880 Posted June 10 Share Posted June 10 According to the repair manual the vibration dampened can cause a vibration at about 40mph then again at 60 mph. Cause is generally rust,corrosion. I have the manual and will try to find. We are moving and many things packed. 1 Link to comment Share on other sites More sharing options...
31nash880 Posted June 17 Share Posted June 17 This comes from Nash service manual 1936-1939. May be helpful. Link to comment Share on other sites More sharing options...
Narve N Posted June 18 Author Share Posted June 18 23 hours ago, 31nash880 said: This comes from Nash service manual 1936-1939. May be helpful. Much appreciated lead. Is there any more to this procedure on the Manuals next page? Link to comment Share on other sites More sharing options...
31nash880 Posted June 18 Share Posted June 18 Gets into bearings. Here pic. Found book on ebay I believe. 1 Link to comment Share on other sites More sharing options...
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