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Help to identify rear axle and diff.
Lotus-64 - 24/6/13 at 07:36 PM

Hi. I need help to identify my lotus 7 modified rear suspension/rear axle.
The differential cover are octagonal secured with eight bolts and service plug to the right of senter.
RM

DarrenW - 24/6/13 at 07:41 PM

Any photos, tags, numbers etc to help with the ID? Why do you need to identify it?

Lotus-64 - 24/6/13 at 07:48 PM

Will trye to download pictures, the diff. are numbered 21C80B and 77AC-4005-CB Ratio 389.

Lotus-64 - 24/6/13 at 07:51 PM

I need parts for the diff. and brake.

jacko - 24/6/13 at 08:10 PM

quote:
Originally posted by Lotus-64
Will trye to download pictures, the diff. are numbered 21C80B and 77AC-4005-CB Ratio 389.

With them numbers it looks like a ford sierra diff
look at the top of the engine and transmission section
Jacko
http://www.locostbuilders.co.uk/forum/9/viewthread.php?tid=85080

[Edited on 24/6/13 by jacko]

jacko - 24/6/13 at 08:18 PM

diffs
diffs
Dose your diff look like these diffs ?
Jacko

Paul Turner - 25/6/13 at 09:10 AM

Lotus used a variety of axles in the 7. Some were of BMC origin, some Standard Triumph origin and also the Ford Escort axle in later ones. Caterham used the Morris Marina/Ital axle in the 80's and its is possible one has found its way under your car.

Very unlikely it has a separate diff, very few cars left the factory like that but some have been modified.

Simple check for starters, if the PCD of the wheel studs is 4.25" it should be a Ford, if its 3.75" it should be a BMC or Triumph.

Photo's would be handy.

Lotus-64 - 26/6/13 at 03:01 PM

Paul, I measured the PCD to 4,25" (108) so likely it`s a Ford axle, thanks.