LSD's

[Michael Woodford MST]

What diff is the one to have for the 172?

and roughtly how much are they.

I've done a quick google serch but can't really find much

 

[Fletcher]

How about this?

http://www.k-tecracing.com/show_product.asp?id=1792&pic=1

 

[Bazzon]

We have the Quaife, its very good.

Im sure others have the Gripper LSDs (IIRC slightly cheaper)

 

[Mark One]

i'd get a gripper. Plate is the way to go.

 

[franx]

^^ this gripper , what's the difference with the Quaife ? The quaife one for the Renault RS is the most expensive one they sell !! It wo'nt break though, lifetime warranty on that little toy

I've heard about the gripper before, pro's and cons ?

 

[Ex-User (19928)]

Quaife is an ATB diff so it won't break anyway, lifetime guarantee is just a marketing gimmick really. Haven't got a clue how they work, but it's done with gears and torque balancing rather than allowing slip with the use of clutch plates.

If you have 0 traction on one of the wheels it will spin on it's own though, not a massive issue, but say you hit a rumble strip on a track and one of the drive wheels left the ground, you would have no forward drive (not likely to happen often). Some people say the same happens on ice, but the torsen on my MX5 gave drive to both wheels in the ice and snow.

 

[franx]

I've been reading up and it seems the grippers are chosen by the harcore hill-climb racers, gravel race, etc. and the Quaife is more the tarmac neccescary diff, road and track.

 

[Nick r26r]

if it were me i would go for the quaife as it is a bolt in and leave jobbie , the gripper will need rebuilding down the line or servicing as the quaife is just a put in and leave jobby !! thats what i have read anyway

 

[stan*]

There are people who havehad grippers fitted for several years and not required servicing.

ATB will act as an open diff if one of the drive wheel lifts.

 

[GodSpeed]

If you'd know the amount of work to mount a differential you would not even consider a diff that need maintenance once in a while. = Quaife all the way!

There are people who havehad grippers fitted for several years and not required servicing.

ATB will act as an open diff if one of the drive wheel lifts.

Standard argument from the plate differential crew. But how often do you have your wheel in the air? When you hit the curbs like a BTCC race car with your street car?!? Quaife is the best compromise for a street/track car. End of story

 

[stan*]

Sorry, I was coming from a more competition / motorsport stand point, I guess in terms of compromise for road useres the Quaiffe is a better all rounder.

However, if youve driven with both, you would sharp change your mind about which performs the task in hand better.

For the record, the diff can be removed in about 20mins if the box is out.

 

[Christopher]

I drove a DC5 with a Cusco plate diff and it was brutal. Pulled all over the shop... tramlined under power, too. Is this a trait of plate diffs? Are they more brutal, as a rule?

 

[mini-valver]

Depends how much preload its under. We have a Quaife in our R56 Mini at work and it was fantastic on the road although once pushing on and you unload the inside wheel, you still get wheelspin. Have a Cusco in the R53 and its a pig in town, noisy and harsh but for the job its designed to do, is head and shoulders above the Quaife.

To put it in perspective, the outer CV destroyed itself on the R53 last week and it stil drove forward normally. No slip AT all, even under power, lol.

 

[Christopher]

Haha, yeah it was a good guess then!

The Cusco I drove in the Integra was f*cking brutal. Noisy too! Pulling out of junctions at anything other than tickling the throttle and it'd have your arms off!

 

[DMS]

So what other options are available for the 1*2's besides the Quaiffe and Gripper?
And would they fit in a DCi box? I'm thinking of changing to a DCi box when I destroy my current gearbox with torque

I'm currently leaning towards the Quaiffe ATB diff because my mate had one in his 205 with a GTi-180 conversion and it absolutely transformed the car. I've never driven anything else with an LSD though.

 

[GodSpeed]

For the record, the diff can be removed in about 20mins if the box is out.

I seriously doubt that you have ever taken the diff out of a JC5 if you make such a statement. I have. So I would very much like to see you do it in 20minutes. Never mind the box down and up is a 7-8hour job.

For strict track/race use the plate diff is better since it have a lot more agressive setting. But on road such a diff may well be a pain in the ass noisy and too agressive for normal driving.

 

[Beaniemoo]

I seriously doubt that you have ever taken the diff out of a JC5 if you make such a statement. I have. So I would very much like to see you do it in 20minutes. Never mind the box down and up is a 7-8hour job.

For strict track/race use the plate diff is better since it have a lot more agressive setting. But on road such a diff may well be a pain in the ass noisy and too agressive for normal driving.

I dunno, We finally got round to whipping the diff out of the 172 cup box this morning and it only took around 40mins and most of that was trying to find someone with the monster socket needed to release the diff.

Not sure about getting the box out if a 1*2 though as ours was on a bench not in a car lol

 

[ForceIndia]

I dunno, We finally got round to whipping the diff out of the 172 cup box this morning and it only took around 40mins and most of that was trying to find someone with the monster socket needed to release the diff.

Not sure about getting the box out if a 1*2 though as ours was on a bench not in a car lol

Getting the box in/out is a loooonnggg job!

 

[mini-valver]

It really isn't THAT bad. Even easier on a ramp!

 

[Nick r26r]

it took my mate 4.5 hours to get my clutch changed on my clio and he had never done one before on a clio , started at 1.30 and done by 6.00 ,

 

[stan*]

I've taken a box out of a williams in 45mins before!
Usually two hours not rushing....mk1 or mk2 RS/valver etc

And yes, if it's taking you 7 hrs to get a box out then I'm not suprised you can't have the diff out quickly.
It's really not that hard...!

 

[GodSpeed]

I've taken a box out of a williams in 45mins before!
Usually two hours not rushing....mk1 or mk2 RS/valver etc

And yes, if it's taking you 7 hrs to get a box out then I'm not suprised you can't have the diff out quickly.
It's really not that hard...!

Read again... I wrote 7-8hours up AND down. Sure you can rip it down in 2 hours no problem, it’s up that takes time using torque wrenches and stuff. Most Renault specialist state 8hours for box up and down, if you take the whole process from drivable car back to drivable car I’d say you are very quick if you do it all in less than 6hours.

And the total time to split a box take everything out, clean it, glue it and tighten everything up again aint done in an hour like you make it sound like.
20min of ripping the diff out is just complete BS everyone that’s been servicing these boxes know that.

If you want to fool anybody that a diff change is a small job that’s done in few hours well go right ahead. I guess most people can draw their own conclusions.

 

[stan*]

Facile Tigre. I am a Renault specialist, and I can do a gearbox change in 4hrs comfortably... drive in drive out...sorry if you dont believe that.

I'm not saying fitting an LSD is a small job, but it certainly not as hard as you would like to imply.

 

[stan*]

And yes, with a gearbox sat on the floor the diff can be out in 20mins.
Obviously assembly would be longer, the point was to show it's not THAT difficult.