Huh?
19 September 2003, 12:38 AM
#1
Scooby Regular
Thread Starter
Join Date: Sep 2003
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
Just picked up my '97 Impreza sti type - r V4 the other day and noticed there is, umm, an adjustable diff??
On the dash, when i alter it, i notice the lights changing colour and moving further up etc.
At the moment, it's (on the dash) set on what looks like ZERO (in green) lowest setting.
What does this switch do etc and how does it alter the perfromance of the car?
A good explanation will be VERY much appreciated for this newbie to sccobs ;0)
thanks
Matt
On the dash, when i alter it, i notice the lights changing colour and moving further up etc.
At the moment, it's (on the dash) set on what looks like ZERO (in green) lowest setting.
What does this switch do etc and how does it alter the perfromance of the car?
A good explanation will be VERY much appreciated for this newbie to sccobs ;0)
thanks
Matt
19 September 2003, 06:28 PM
#6
Scooby Regular
Join Date: Nov 2003
Location: where the wild roses grow
Posts: 5,122
Likes: 0
Received 0 Likes
on
0 Posts
Would I be correct in thinking you used to be Scoobymatt26? You seem somehow familiar.
Sonic has already posted a link to the DCCD instruction manual, did you read it?
In short, the answer to your question is no. With the diff in the "bottom" position, there is a 64:36 torque bias to the rear wheels, so under these circumstances the car will be more prone to power oversteer, and less stable under heavy braking.
As you turn the diff up, you will get more assistance from the front wheels, which makes the car more stable/neutral/understeery under power, and also acts as a pseudo-bias valve, forcing the front brakes to do more of the work and making the car more stable under heavy braking.
For normal "round town" driving, as well as parking, reversing, and turning tight corners, running with the diff down is correct, as running with it up can cause diff "fight", which both sounds unpleasant, and won't do either the diff, or your front tyres, any good.
Look at John's page for further info, everything you need to know is there.
Sonic has already posted a link to the DCCD instruction manual, did you read it?
In short, the answer to your question is no. With the diff in the "bottom" position, there is a 64:36 torque bias to the rear wheels, so under these circumstances the car will be more prone to power oversteer, and less stable under heavy braking.
As you turn the diff up, you will get more assistance from the front wheels, which makes the car more stable/neutral/understeery under power, and also acts as a pseudo-bias valve, forcing the front brakes to do more of the work and making the car more stable under heavy braking.
For normal "round town" driving, as well as parking, reversing, and turning tight corners, running with the diff down is correct, as running with it up can cause diff "fight", which both sounds unpleasant, and won't do either the diff, or your front tyres, any good.
Look at John's page for further info, everything you need to know is there.
19 September 2003, 06:36 PM
#7
Scooby Regular
Join Date: Oct 2004
Location: Never do names esp. Joey, spaz or Mong
Posts: 39,688
Likes: 0
Received 0 Likes
on
0 Posts
You would be incorrect.
That bit above was cut and paste - I was just laughing at it and nobody could hear me unless I typed it in LOL
That bit above was cut and paste - I was just laughing at it and nobody could hear me unless I typed it in LOL
Trending Topics
19 September 2003, 07:09 PM
#8
Scooby Regular
Join Date: Nov 2003
Location: where the wild roses grow
Posts: 5,122
Likes: 0
Received 0 Likes
on
0 Posts
Erm, didn't think you (i.e. Lightning101) were Scoobymatt. Your post wasn't even there when I hit Reply. 
BTW, FWIW, the semi-active centre diff controllers that are around continuously alter its setting - even when the car is in the air - and it doesn't seem to complain.
BTW, FWIW, the semi-active centre diff controllers that are around continuously alter its setting - even when the car is in the air - and it doesn't seem to complain.
Thread
Thread Starter
Forum
Replies
Last Post