Haynes Forums  

Go Back   Haynes Forums > Haynes Roadster Forums > Announcements
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 13th October 2013, 09:22 PM
Spikehaus Spikehaus is offline
Senior Member
 
Join Date: Aug 2008
Location: Plymouth, Devon
Posts: 484
Default Sierra LSD Diff 3:62:1 Problem

I am currently running a Ford Sierra LSD Diff from a XR4x4 2.8i

The Ratio is 3:62:1

Final Drive Code "U" on the engine plate

I noticed during my build, that when manually pushing the car around the garage, it appeared to have some resistance that required 2 people to push it. This was in a straight line either backwards or forwards. I am note sure if this happens when turning? I also thick that it does not occur all of the time?

The IVA inspect also commented on it during the roller brake test. He was not overly concerned, however he said it may need to be changed if I get bad fuel economy.

It still seems to be occurring, an noticed when free wheeling to a stop.

I had hoped to change the oil when installing, but the Allen head bolt was damaged by the previous owner.

Any ideas?? I was thinking about injecting a small amount of diff oil through the air breather opening.

Any help appreciated.
Reply With Quote
  #2  
Old 13th October 2013, 09:47 PM
twinturbo's Avatar
twinturbo twinturbo is offline
Super Moderator
 
Join Date: Jul 2008
Location: Carlisle
Posts: 4,389
Default

Drop the cover out, drill out the plug and fit a new one.

The only thing that springs to mind on the tightness is perhaps the nose nut was done up too tight by someone and the vearing is under strain.


TT
__________________
You only get a woosh with a dump valve

Build Thread


Man Cave Mantiques



Cecil Street Auto Repairs Garage Carlisle




Build Cost £4181.65 - Last - Wheel Cylinders
Reply With Quote
  #3  
Old 13th October 2013, 09:53 PM
PorkChop PorkChop is offline
Senior Member
 
Join Date: Jul 2011
Posts: 394
Default

The only time I saw a diff act the sort of way you've described, it was knackered. It was locking and needed a good shove (by 3 people) to get rolling again.
Reply With Quote
  #4  
Old 13th October 2013, 10:34 PM
Spikehaus Spikehaus is offline
Senior Member
 
Join Date: Aug 2008
Location: Plymouth, Devon
Posts: 484
Default

What mileage would you expect to get out of a diff?, the car had 113,791 on the clock when I purchased it for £130!!!
Reply With Quote
  #5  
Old 14th October 2013, 07:13 PM
PorkChop PorkChop is offline
Senior Member
 
Join Date: Jul 2011
Posts: 394
Default

Well, that would depend on how the diff was treated over those 113K miles. If it was looked after, then I would expect to do more than that.

I'm not fully up on Sierra LSD prices, but £130 would be half of what you could expect to pay for a MX5 LSD.
Reply With Quote
  #6  
Old 14th October 2013, 09:44 PM
twinturbo's Avatar
twinturbo twinturbo is offline
Super Moderator
 
Join Date: Jul 2008
Location: Carlisle
Posts: 4,389
Default

113's nowt even on a 2.8. type9's fail long before the diff if driven badly.

TT
__________________
You only get a woosh with a dump valve

Build Thread


Man Cave Mantiques



Cecil Street Auto Repairs Garage Carlisle




Build Cost £4181.65 - Last - Wheel Cylinders
Reply With Quote
  #7  
Old 15th October 2013, 06:10 AM
snapper snapper is offline
Senior Member
 
Join Date: May 2007
Location: Chelmsford, Essex
Posts: 360
Default

The LSD bit is viscous and sealed these rarely fail so your problem is the non LSD bits of the diff
3.62 LSD"a are about £150
Reply With Quote
  #8  
Old 15th October 2013, 05:06 PM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

Too vicious by the sound of it
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
  #9  
Old 19th October 2013, 06:45 PM
Spikehaus Spikehaus is offline
Senior Member
 
Join Date: Aug 2008
Location: Plymouth, Devon
Posts: 484
Default

Striped down the back passenger compartment panel, fuel tank & loom today to gain access to the diff. I managed to measure the oil through the breather pipe hole in the top of the housing with a piece of wire. It seemed to be very low on oil, so filled in up as best as possible to the filler plug level. As reassembled and off for a test drive in the sun.

I cannot determine if its resolved the issue, but its certainly going to help.

Heading off from Plymouth to Exeter next weekend for the Kitcar Show. This should be the first real test for my home engineering.

Drove down a farm lane today and got sprayed with cow dung splatter of the front wheel! Wish I had put my helmet on!
Reply With Quote
  #10  
Old 23rd October 2013, 08:45 PM
baz-r baz-r is offline
Senior Member
 
Join Date: Nov 2009
Posts: 1,464
Default

weld a nut to the plug and the heat will distress it and will come out a dream
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 09:50 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.