General Car Related Discussion. To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.

Open front diff or lsd on a 4x4

Thread Tools
 
Search this Thread
 
Old 20-04-2008, 07:41 PM
  #1  
escossie560
Too many posts.. I need a life!!
Thread Starter
 
escossie560's Avatar
 
Join Date: Nov 2005
Location: leicester
Posts: 564
Likes: 0
Received 0 Likes on 0 Posts
Default Open front diff or lsd on a 4x4

After yet another great day of smashing transmition parts at pod, ive been thinking of removing my front atb diff and going back to an open diff to remove some of the tension on my drive train when launching .......what do people think will this help much
Old 20-04-2008, 08:00 PM
  #2  
RWD_cossie_wil
10K+ Poster!!

iTrader: (9)
 
RWD_cossie_wil's Avatar
 
Join Date: May 2004
Location: birmingham west mids
Posts: 11,919
Likes: 0
Received 11 Likes on 9 Posts
Default

nope, still a shitty little 6.5" diff, go for a R&D 7" unit at the very least, I have a thinkwall 909 diff and am worried about breaking that..... Doug stirling cracked his thickwall casing in half ... Launching a 4x4 cos with big power will mean spending 10k+ at least on the tranny...... or it's wreck and repair on the cheaper stuff, simple as. Good as the Mullet boxes are, the mainshaft will always be a problem as you have to work your upgrades into the original dimensions.
Old 20-04-2008, 08:12 PM
  #3  
escossie560
Too many posts.. I need a life!!
Thread Starter
 
escossie560's Avatar
 
Join Date: Nov 2005
Location: leicester
Posts: 564
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by RWD_cossie_wil
nope, still a shitty little 6.5" diff, go for a R&D 7" unit at the very least, I have a thinkwall 909 diff and am worried about breaking that..... Doug stirling cracked his thickwall casing in half ... Launching a 4x4 cos with big power will mean spending 10k+ at least on the tranny...... or it's wreck and repair on the cheaper stuff, simple as. Good as the Mullet boxes are, the mainshaft will always be a problem as you have to work your upgrades into the original dimensions.

I have a thick wall front with an atb dont think i can go back to open as the casings have to be machined. I have the mullet box but it only has the gear kit not the shafts (which is why i came home on a bar) But i keep snapping drive shafts i think the diff is one of the big reasons due to the fact the atb locks so when one wheel finds grip it rips the other apart.
Old 20-04-2008, 08:28 PM
  #4  
Kelv
Almost there!

iTrader: (4)
 
Kelv's Avatar
 
Join Date: Jun 2003
Location: Gatwick (ish)
Posts: 7,434
Likes: 0
Received 0 Likes on 0 Posts
Default

Wil - im guessing youve already looked into costs of the R and D front diff.

do you know the costs etc, and are you able to still use the standard driveshafts - i reffer mainly to the drivers side shaft.

both of my Diffs are currently ATB aswell.
Old 20-04-2008, 08:31 PM
  #5  
Gary F
PassionFord Post Whore!!
iTrader: (1)
 
Gary F's Avatar
 
Join Date: Oct 2005
Location: South Shields
Posts: 3,904
Likes: 0
Received 3 Likes on 3 Posts
Default

Might be a daft question but have you checked your engine mounts?
Old 20-04-2008, 08:33 PM
  #6  
Dannn
I've found that life I needed.. It's HERE!!
 
Dannn's Avatar
 
Join Date: Aug 2006
Location: UK
Posts: 1,249
Likes: 0
Received 0 Likes on 0 Posts
Default

Convert to 2wd - fixed!
Old 20-04-2008, 09:02 PM
  #7  
cossiemanden
DANISH cosworth abuser
 
cossiemanden's Avatar
 
Join Date: Aug 2004
Location: Holbæk, denmark
Posts: 1,467
Likes: 0
Received 0 Likes on 0 Posts
Default

As i have said eralyer, keep the standard diffs, because of the way they work, they have the right amount of grip to get the gearbox to hold together, and it´s wery simple to get them to last

Trending Topics

Old 20-04-2008, 09:42 PM
  #8  
markk
10K+ Poster!!
iTrader: (2)
 
markk's Avatar
 
Join Date: May 2003
Location: Lancs
Posts: 10,638
Received 105 Likes on 97 Posts
Default

Originally Posted by escossie560
I have a thick wall front with an atb dont think i can go back to open as the casings have to be machined. I have the mullet box but it only has the gear kit not the shafts (which is why i came home on a bar) But i keep snapping drive shafts i think the diff is one of the big reasons due to the fact the atb locks so when one wheel finds grip it rips the other apart.

if an ATB loses traction the wheel that is slipping then revieves all the power mate. hence why ATB's are really poor, as long as you can maintain equal drive they work, if not they are about as good as an open unit. the ATB never locks, is a pre-loaded torque biased unit.
Old 20-04-2008, 09:52 PM
  #9  
RWD_cossie_wil
10K+ Poster!!

iTrader: (9)
 
RWD_cossie_wil's Avatar
 
Join Date: May 2004
Location: birmingham west mids
Posts: 11,919
Likes: 0
Received 11 Likes on 9 Posts
Default

Originally Posted by Kelv
Wil - im guessing youve already looked into costs of the R and D front diff.

do you know the costs etc, and are you able to still use the standard driveshafts - i reffer mainly to the drivers side shaft.

both of my Diffs are currently ATB aswell.
I belive you can use std shafts, and an R&D unit goes from anywhere between £1400-£2800 from the ones I have seen sell.
Old 21-04-2008, 09:54 AM
  #10  
Turbo lag
Advanced PassionFord User
 
Turbo lag's Avatar
 
Join Date: Jun 2003
Location: Lancashire
Posts: 1,627
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by cossiemanden
As i have said eralyer, keep the standard diffs, because of the way they work, they have the right amount of grip to get the gearbox to hold together, and it´s wery simple to get them to last
What do you do to the difs Cossiemanden ?

Dave.
Old 30-09-2008, 08:23 PM
  #11  
ECOS95
Advanced PassionFord User
 
ECOS95's Avatar
 
Join Date: Jul 2004
Location: Berks
Posts: 2,003
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Turbo lag
What do you do to the difs Cossiemanden ?

Dave.
Seconded.
Old 30-09-2008, 08:47 PM
  #12  
blacky.
BANNED
BANNED
 
blacky.'s Avatar
 
Join Date: Nov 2005
Location: stockton
Posts: 3,112
Likes: 0
Received 0 Likes on 0 Posts
Default

loose a load of weight from the car & they will last better
Old 30-09-2008, 08:48 PM
  #13  
Lloyd
escort mk4 cossy 4x4
 
Lloyd's Avatar
 
Join Date: May 2004
Location: coventry
Posts: 4,629
Likes: 0
Received 0 Likes on 0 Posts
Default

i have a atb for sale,in the correct forum, and it has been faultless with 600bhp and 50/50 torque split
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
3i Jim
Cars for Sale
4
20-11-2015 05:12 AM
Chas
Ford Escort RS Turbo
5
21-09-2015 08:57 PM
FlashRS
Cars for Sale
10
14-09-2015 12:36 PM
C2 MAK
Ford RS Cosworth Parts for Sale
0
20-08-2015 09:46 PM
Old ford
Ford RS Cosworth Parts for Sale
0
31-07-2015 06:50 AM



Quick Reply: Open front diff or lsd on a 4x4



All times are GMT. The time now is 01:05 PM.