AC Bristol ring and pinion

[Thomas Ellsworth]

Does anyone know where I can locate either a very good 3.9 ring and pinion or if anyone is making them on the after market. What other cars was this ENV unit used on?
   
   Tom Ellsworth

[AC Ace Bristol]

Hi Tom
   
   ENV differential units were fitted to some of the larger upmarket Saloons of the 1940s and 1950s.
   
   I believe 1950s Daimler used 3.9 & 4.3 ENV units.    Caution many of the larger heavier Saloons used ratios of 4.5 even 4.7 & 4.9,  one person who could throw some light on the subject is Mike Mansergh, in Workington, Cumbria.  suggest you email him direct on...
   
   mike.mansergh@bt.com
   
   If you find a source of supply of either complete units or new old stock parts please keep us all informed as these units are as rare as hens teeth.  Good Luck !
   
   Keith L Lessiter

[Thomas Ellsworth]

Have looked into Daimler ENV units. Unfortunately they used 3.7 ratios not 3.9. It would work, but prefer the proper 3.9 so still looking.