Lotus Elan

Differential rebuild video

PostPost by: sabbot » Wed Sep 08, 2021 1:51 am

I’m just about to embark on changing the crown wheel and pinion ratio on a spare elan diff and was wondering if anybody has posted a video of setting up the pinion / crush washer etc. I’ve read various articles and have the workshop manual but given a picture is worth a 1000 words I figured a video might be worth reviewing before I start, if there are any available. All suggestions would be appreciated.
sabbot
Second Gear
Second Gear
 
Posts: 81
Joined: 18 Nov 2012
Location: San Diego

PostPost by: rgh0 » Wed Sep 08, 2021 3:58 am

viewtopic.php?f=37&t=34302

I wrote up an diff rebuild with photos a while back in 2015 that addresses many of the common issues if doing it yourself. Worth the read if you have not seen it. No video sorry

5 Years of racing on that diff since then with zero issues, noise or leaks. The first diff lasted 20 years of racing since I rebuilt it with a Quaife centre. ( and 20 years of road and race use before that) so 15 more to go at least :)

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 8010
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: sabbot » Thu Sep 09, 2021 3:40 am

Thanks Rohan
sabbot
Second Gear
Second Gear
 
Posts: 81
Joined: 18 Nov 2012
Location: San Diego

PostPost by: marode » Sat Sep 11, 2021 10:24 am

hey sabbot!
I've just finished my (first) diff rebuild. It's not in the car yet, so I cannot say at this point if I`ve been successful. But I could send you some helpful video links that explain some things in general, not particularly for the ford english diff, but that doesn't matter at least for a few things. You should at least have the tool to measure the "cap spread" as mentioned in the book or have the ability to produce one, nothing really complicated. All you need are two dial indicators and some metal. Then, if you want to change pinion and crownwheel you should be able to calculate the pinion height. There are general toolsets available to do that. I haven't used them, cause I did not change the crownwheel or pinion, but I've found a youtube video that explains how to calculate and use them. Without that pinion height measurement tool you may take the diff apart several times before you get it right. Let me know, if you´d be interested.

https://www.youtube.com/watch?v=S61Ut8tOu1o

cheers
Matthias
Attachments
IMG_0491.jpeg and
User avatar
marode
First Gear
First Gear
 
Posts: 45
Joined: 04 Aug 2010
Location: Kassel, Germany

PostPost by: sabbot » Sun Sep 12, 2021 3:54 am

Thank you Matthias,
Any additional hints would be appreciated. I am going to be changing the crown wheel and pinion as I just acquired a 3.3:1 ratio set from NTG for my 4 speed +2. I’ll be able to weld a “C” bracket to measure the cap spread.
Thanks again,
Stewart
sabbot
Second Gear
Second Gear
 
Posts: 81
Joined: 18 Nov 2012
Location: San Diego

Total Online:

Users browsing this forum: No registered users and 6 guests