An idiot's guide to swapping LSDs in a Sierra final drive.

Need help from a fellow owner, something to air - discuss away!

Moderator: Contaminated

User avatar
SJLB
Posts: 576
Joined: Sat May 31, 2014 5:31 pm
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby SJLB » Sun Feb 07, 2021 8:16 pm

Well done DJ.
To be honest, just taking the f*cking thing out and putting it back is enough of a challenge! Just put mine back in today.
Steve
Westfield Megabusa, Bromley, Kent.

User avatar
Wingco
Posts: 2757
Joined: Thu Jul 26, 2012 9:49 am
Location: Swanley, Kent
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby Wingco » Sun Feb 07, 2021 8:33 pm

Liked that write up Duncan, very well put together and written.
Shame I can't have one, that was going to be my upgrade this winter, turns out I have a Kolhn axle and they don't do one for that Doh.
Hope you notice the difference Duncan, you will be disappearing in the distance now.
Mirror, Signal go faster pedal !!

Dick
Posts: 2217
Joined: Mon Jun 27, 2011 12:16 pm
Location: Gillingham
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby Dick » Mon Feb 08, 2021 9:38 am

I have to ask what oil was you running in the plate diff , we run them on the race cars as do lots of people these dont seem to give any real problems when you consider how hard they are set up and the abuse they get

User avatar
DJ.
Posts: 5991
Joined: Mon May 30, 2011 7:31 pm
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby DJ. » Mon Feb 08, 2021 10:32 am

Hi Dick,
I used Fuchs titan 90ls, GL5 oil. The titan lsd performed well for me, but at 35,000 miles use, it went 20,000 past the recommended service interval so I can't complain.

I changed to the ATB as I don't enjoy taking the diff out regularly.

User avatar
leegav
Posts: 2798
Joined: Mon Dec 19, 2011 10:09 am
Location: Fairford
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby leegav » Mon Feb 08, 2021 3:28 pm

Good stuff. Yes my diff woes (leaks) were solved when I realised MNR knocked too larger seals into the diff. Dropped down a couple of mm and leaks stopped!
I wouldn't want to take onem out completely though I think that's past my skill and patience level :lol:
Say NO to Pheasants !!! Body count = 3
Say NO to Blackbirds !!! Body count = 1
Say NO to Marmots !!! Body count = 1
Say NO to Squirrels!!! Body count = 1

User avatar
ChrisL
Posts: 1799
Joined: Wed Jun 15, 2011 9:42 pm
Location: Bedfordshire
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby ChrisL » Tue Feb 09, 2021 11:21 am

Great write up, didn't quite manage to follow it all but have bookmarked when I get around to playing with my diff...
Yes I've been drinking, what of it!!

greenwoo
Site Admin
Posts: 10185
Joined: Thu Dec 03, 2009 10:34 am
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby greenwoo » Wed Feb 10, 2021 12:45 am

thx Duncan, nice little read.....handy that you could make the tools to aid the swap!!

User avatar
SteveRST
Posts: 1261
Joined: Sat Aug 18, 2012 12:23 pm
Location: Chessington
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby SteveRST » Fri Feb 12, 2021 2:48 pm

Excellent write up Duncan! Hopefully this will last you for many more years blatting now.

I've no idea about diffs... that's a job I'd certainly be unsure about tackling myself.
Westfield Zetec turbo & Westfield Megabusa turbo

User avatar
DJ.
Posts: 5991
Joined: Mon May 30, 2011 7:31 pm
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby DJ. » Fri Feb 12, 2021 5:32 pm

SteveRST wrote:Excellent write up Duncan! Hopefully this will last you for many more years blatting now.

I've no idea about diffs... that's a job I'd certainly be unsure about tackling myself.


I wouldn't have tried if Matt hadn't already done the swap and said he would help me.

User avatar
DJ.
Posts: 5991
Joined: Mon May 30, 2011 7:31 pm
Contact:

Re: An idiot's guide to swapping LSDs in a Sierra final drive.

Postby DJ. » Sat Mar 20, 2021 3:16 pm

Good news, I've just been out for a decent run and the diff drives well, no horrible clonking or grinding, just a bit of whine at certain speeds as it has done from new. Best of all, no sign of leaks when I got home 8-)

I now have all new discs and pads all round and greased wheel bearings too. Track day booked at the end of April, I just need to get my MOT and I'm set for the summer :D


Return to “Car Related Discussion”

Who is online

Users browsing this forum: No registered users and 27 guests