Lotus Elan

Help with Plus 2

PostPost by: sprintsoft » Wed Jul 29, 2020 6:30 pm

72 Sprint - 0363E
74 S130/5 - 1931L
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PostPost by: ncm » Wed Jul 29, 2020 8:31 pm

If you are thinking of going back to a standard rear end, then this might be of use to you.. https://www.facebook.com/marketplace/it ... 7520233058
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PostPost by: gus » Thu Jul 30, 2020 12:49 am

Every image I can find of early 3 series axles are cv joints

If the car is not complete it is not a huge deal to lift the body up. The Sierra is a nice diff, so if it can be used it would save money

Back in the day people would cut VW axles in half and reweld them shorter for Elans
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PostPost by: Spyder fan » Thu Jul 30, 2020 6:28 am

I have been reading through this and you have my sympathy.

To try and be helpful could I clear up that you have universal joints and not cv joints? As per the post from Gus E31 BMW's use CV joints as per the 2nd image. The 3rd image shows a set of sliding spline universal joint driveshafts for an Elan

universal jointsImage



CV Joints Image

Image
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PostPost by: Woody7 » Thu Jul 30, 2020 7:54 am

Hi guys
Thanks so much for all the help - just to clarify, the shafts have universal joints(I was under the impression they were from a bmw E21 Could be wrong. The main problem is the UJ binding / locking because of the angle, so by what you are saying a cv joint is the way to go and keep the Sierra diff. I like the idea of modifying vw shafts. Again, thanks for all your help, this is a brilliant forum
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PostPost by: Spyder fan » Thu Jul 30, 2020 8:27 am

Notice on the Kelsport uj driveshafts that the shafts are sliding spline. If yours don't have this feature, then they will almost certainly bind at anything more than slight angles.
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PostPost by: Woody7 » Thu Jul 30, 2020 8:34 am

Here are some photos
DF849112-3196-42CC-A7BD-B3CE3F29D1CC.jpeg and
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PostPost by: Woody7 » Thu Jul 30, 2020 8:35 am

2
95707B12-2D23-48C5-9496-AC46401F5A7B.jpeg and
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PostPost by: Woody7 » Thu Jul 30, 2020 8:36 am

9766943B-86AD-4EED-B26C-15AF2007A5E4.jpeg and
3
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PostPost by: Woody7 » Thu Jul 30, 2020 8:38 am

E1704A1B-6895-4E57-BCCB-623CF4DBBF6A.jpeg and
A1F7DCD1-3990-4BB8-82CD-39304D858ABF.jpeg and
4
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PostPost by: Woody7 » Thu Jul 30, 2020 8:43 am

488B6441-EC3A-40C8-9F74-E8F1A878EF58.jpeg and
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PostPost by: Woody7 » Thu Jul 30, 2020 8:46 am

791CB659-E501-495C-85A3-EB2446FC57F7.jpeg
791CB659-E501-495C-85A3-EB2446FC57F7.jpeg (88.8 KiB) Viewed 66 times
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PostPost by: Woody7 » Thu Jul 30, 2020 8:47 am

92F3BB51-498E-4468-8B4D-DCB36C2B9272.jpeg
92F3BB51-498E-4468-8B4D-DCB36C2B9272.jpeg (91.74 KiB) Viewed 66 times
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PostPost by: Woody7 » Thu Jul 30, 2020 8:49 am

Ps they do slide
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PostPost by: rgh0 » Thu Jul 30, 2020 10:10 am

BMW E21 used CV joints if you have UJ on the drive shafts i.e. Hookes joints then you also need a sliding spline to accommodate length change , do you have that ?

UJs may bind at a much lower angle than Cvs. Also if you have Cvs the length of the shaft may be wrong so that the length travel of the CV is exceeded.

How you fix what you have at lowest cost may be very simple or very hard. More detail and some photos would help

cheers
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