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Jan 14th, 2020
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Re: Quaife/Q2 LSD know-how needed
[Re: Nigel]
#1530392
18/03/2015 18:03
18/03/2015 18:03
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Joined: Feb 2006
Posts: 5,390
Essex
Trappy
Forum is my life
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Forum is my life
Joined: Feb 2006
Posts: 5,390
Essex
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He's said that a Quaife'd car will generate so much more front end grip that any car that has had handling mods to reduce understeer will quite likely tip into oversteer once the diff is fitted
This is exactly what I found after fitting camber bolts on my car and I don't even have a Quaife! I'm only running a 22mm rear ARB but it subsequently generated so much more front end bite at 1.25 degrees that the rear would step out for too easily for my liking. I had them removed soon after. To be honest, I suspect that the bushes (along with several suspension components) may be a bit tired on the rear and contributing to this. I like my coop handling nice and neutral so I can hoon around regardless of tricky cambers or the possibility of lift off oversteer due to 'unforseen circumstances'...
Last edited by Trappy; 18/03/2015 18:04.
F****** b****** thing...
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530434
19/03/2015 00:26
19/03/2015 00:26
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Joined: Dec 2007
Posts: 2,252
Windsor/ Reading
knight7660
Competition Level
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Competition Level
Joined: Dec 2007
Posts: 2,252
Windsor/ Reading
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I found the rear on the LE to be twitchy after fitting mine but I put it down to needing to refurb the rear subframe which is on the cards over the next few months but as you say it maybe caused by the diff. Il be awaiting updates on this thread that's for sure 
LE53 (452BHp & 389ftlb's with Quaife)
Wine red VIS FOOFY
Audi RS4 B7
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530474
19/03/2015 13:22
19/03/2015 13:22
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nissansteve
Unregistered
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nissansteve
Unregistered
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I found that on track in my old car jimbo, it Yokohama parada 2s on the front and toyo p/t1r on the rear.
It was a beautiful warm day at donnington and the car just under steered,
I came in after six laps and swapped the (expensive) yokohamas onto the rear and the transformation in handling was amazing, turn in was great and throttle steering was so controllable.
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Re: Quaife/Q2 LSD know-how needed
[Re: Jimbo]
#1530477
19/03/2015 13:31
19/03/2015 13:31
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Joined: Dec 2005
Posts: 17,367
Staffordshire
Nigel
Forum veteran
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Forum veteran
Joined: Dec 2005
Posts: 17,367
Staffordshire
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Nigel, I'm surprised a man with your experience of handling cars has mismatched tyres fitted!! My first option would be to fit a matching set before I adjusted anything in the geometry. Different traction at either end of the car is going to be a nightmare set up. LOL - very true I bought the Contis because they were a bargain. I seem to have worn them out pretty quickly though - probably more than half worn after 5k miles My Toyos on the rear are still very good, so I have a choice - put new Contis on and take off a perfectly good pair of Toyos, or replace the Contis with more Toyos Whilst I think Toyos are a brilliant tyre for the money, I have to say I've been deeply impressed with the grip of the Contis - £19 more per tyre though... I think a front-rear wheel swap will confirm or eliminate the tyre difference as a contributor to the oversteer
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530510
19/03/2015 18:11
19/03/2015 18:11
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Joined: Feb 2007
Posts: 3,486
London Tan
technics
I need some sleep
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I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Nigel, I had Conti 5p all round and they were a great tyre in the wet and dry. Before that I had Falken 452 as alot of people use rave about them, all I can say about them is.... NEVER AGAIN, average in the dry and terrible in the wet and they were rock hard.
My Dad has Toyo t1r all round on his 450bhp plus, not bad, miles better than the Falken but for the sake of 38 quid a pair you have to get the conti's!
Now in the 400+ bhp club!
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Re: Quaife/Q2 LSD know-how needed
[Re: Nigel]
#1530581
20/03/2015 11:00
20/03/2015 11:00
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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Update - just got off the phone to a techy chap at Quaife - he's very much into his motorsport and is used to having to play with settings to get a car to handle correctly
He's said that a Quaife'd car will generate so much more front end grip that any car that has had handling mods to reduce understeer will quite likely tip into oversteer once the diff is fitted
As I mentioned above, I've been recommended to back off the handling mods, by reducing camber and possibly even removing the uprated rear ARB
Before I remove the ARB, I'm going to back off the camber to standard, put the Contis on the rear and play around with the tracking a bit more. If its still over-steery, I'll then put a standard rear ARB on
Fingers crossed.... Nigel, thank you for this info  So my suggestion was correct. As I said before - too much grip at the front compared to the grip at the rear after I've got quaifed... I will also try with reducing the front camber and I will put 26mm eibach front ARB because I want to keep my 22mm rear ARB.
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530745
21/03/2015 00:45
21/03/2015 00:45
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Joined: Dec 2007
Posts: 2,252
Windsor/ Reading
knight7660
Competition Level
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Competition Level
Joined: Dec 2007
Posts: 2,252
Windsor/ Reading
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What about trying to even the weight up more so bring weight fro. The engine bay to the back like relocate battery, washer fluid and anything else you can move to the boot area, possibly GRP bonnet aswell
Last edited by knight7660; 21/03/2015 00:48.
LE53 (452BHp & 389ftlb's with Quaife)
Wine red VIS FOOFY
Audi RS4 B7
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Re: Quaife/Q2 LSD know-how needed
[Re: knight7660]
#1530753
21/03/2015 06:36
21/03/2015 06:36
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Joined: Oct 2010
Posts: 549
Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 549
Bulgaria
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What about trying to even the weight up more so bring weight fro. The engine bay to the back like relocate battery, washer fluid and anything else you can move to the boot area, possibly GRP bonnet aswell Will be good idea, anyway GRP bonnet is not cheap, but with that you can remove about 30 - 35kg from the front end.....
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530756
21/03/2015 07:37
21/03/2015 07:37
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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My battery is already relocated into the boot where the spare wheel usually is (the lowest point).
Air con compressor, pipes and radiator - removed
Washer fluid tank - removed
I am dreaming for GRP bonnet since I've bought the car but it is too expensive. However when I have the money I will change it for sure!
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Re: Quaife/Q2 LSD know-how needed
[Re: ]
#1530783
21/03/2015 10:42
21/03/2015 10:42
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nissansteve
Unregistered
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nissansteve
Unregistered
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Auto ds are doing a bit of a deal on grp bonnets at the moment......
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