Lsd's and drag racing.

[dub-disaster]

I've currently got a quaife LSD waiting to be fitted at the moment, but I'm slightly unsure if I bought the right diff  baisicaly I want a diff that ain't gonna cause me loads grief on the roads but one that's going to give me good grip of the line as I would like to do more drag racing. I k ow the atv diff I got cannot act if one wheel is spinning so baisicaly won't help me with grip of the line. Just wondering how hard it is to live with a gripper on roads , if I where to set the ramp angle to suit mainly road driving would I still benifit on the strip?? I want a versatile Carthage fun to drive on roads drag strip and the track am is this possible and mainly have I got the right diff??

[hayesey]

hmm a gripper would be better for drag racing. As for how hard a gripper would be to live with every day it really depends on how fussy a person you are. It makes the steering heavier and low speed maneuvers hard on the arms. 

[Yoof]

We have one gripper in stock that's set-up for fast road applications with 200bhp in mind. I'm sure we could come to a deal p/x with the quaife.

For drag racing and out & out traction you won't beat a plate diff. I use a Gripper and slick to good effect on my car, 0-60mph in 4.8s at the Pod last year- you need a subframe when running this kind of tyre though.

[Puncharado]

dubdisaster, if you decide to change I'll have the Quaife diff off you.

[dub-disaster]

Not sure now ... Kinda leaning toward a grippa at the moment been doing alot of reasearching but I'm only going on other peoples opinions, hayesey when you go to British vw fest maybe you could take me out for a spin help me make up my mind ??
    Yoof you ever driven a Car equiped with a quaife?? I have read the thread on club polo about plate diffs and atb's so I don't wanna open up a can of worms but does a atb give you any better traction off the line over an open diff due to not locking when one wheel is freely spinning  ??
   I would love to get one of those new wavetrac lsd's as there a torsen diff that will lock with no load due to some clever internals unfortunatly they don't do one for our box as their America. And don't know what a g40 is !! if I do come to sell I'll let you both know yoof if I wanna swap and puncharado if I wanna sell thanks guys

[hayesey]

yeah if I take the polo to bvf (which I'm planning on doing) then you can have a look at it.  It's the low speed manouvers that it makes most difference too and that will make it annoying if using daily.  Once you're on the move it's really not an issue.

[Yoof]

Not sure now ... Kinda leaning toward a grippa at the moment been doing alot of reasearching but I'm only going on other peoples opinions, hayesey when you go to British vw fest maybe you could take me out for a spin help me make up my mind ??
    Yoof you ever driven a Car equiped with a quaife?? I have read the thread on club polo about plate diffs and atb's so I don't wanna open up a can of worms but does a atb give you any better traction off the line over an open diff due to not locking when one wheel is freely spinning  ??
   I would love to get one of those new wavetrac lsd's as there a torsen diff that will lock with no load due to some clever internals unfortunatly they don't do one for our box as their America. And don't know what a g40 is !! if I do come to sell I'll let you both know yoof if I wanna swap and puncharado if I wanna sell thanks guys

I'm not aware anyone who's driven a G40 equipt with a Gripper and then a Quailfe- can't say I have, although I've driven various different types of Plate LSD.

The only advice I can give is based on facts I know:

The gripper is strong enough to be used with drag slicks
The gripper will always try to achieve maximum traction even with one wheel spinning
Plate LSD can be built to suit your specific needs.

I think the main problem people have with them is the additional steering effort required at low speeds (as Hayesey said) although a touch of castor can lighten the problem. But they also require a different style of driving, total commitment throughout the corner- and a good balance of throttle possibly with left foot braking if the situation changes mid corner.

The quailfe is without doubt more suited to a road car, for me it was an easy decision as I wanted my £500 to go towards the diff that would give me ultimate traction- I lived with the downsides to it, as do many others.

[dub-disaster]

yes i see what your saying yoof, and that has been whats niggiling at me recently reading about different peoples oppinions on the diffs i have read this http://www.clubgti.com/forum/showthread.php?t=122072&highlight=plate+diff+torsen and its making me think that for the amount of money im spending i want a lsd thats going to be and lsd all the time not just some of the time i realy dont wanna spend the cash and be dissapointed with it wich i fear i will be with a torsen diff, im a little scared of having a plate diff as ive never dirven one before and dont want to go crashing , how do the plate diffs behave in the wet and on round abouts?? what are the ramp angle settings on the grippa that you,ve got in stock yoof and what sorta part x would i be looking at ? How often do these diffs need rebuilding?
only thing putting me off a plate diff is the fact ive got to rebuild it after a while the fact that i may crash my car as im not used to it   and the other problems it will cause is drive shafts snapping and cv joints will need replacing quite often im assuming how many miles do you guys get out of a set of cvs? and is it all four cvs than need replacing or just outers??? or is that not so much of a problem when its more setup for the road?
  Also grippa diffs are they 1 way 1.5 way or 2 way ? thanks for the input again guys been most helpful in helping me decide
 

[Tommo]

For drag racing and out & out traction you won't beat a plate diff.

O RLY???

[Nick_S]

That your welded up diff then Tom?

That crown wheel is pressed on, so may well be the weak point now.

[Tommo]

I had and old 4 speed box kicking about, so ive welded the diff, and im going to swap it over and see what its like to drive. I think with standard steelies on it might be bearable on the road, but it costs nothing to find out.

How bad are the pressed on crown wheels? I can always stitch it on with the tig. Will my current 5 speed box have a bolt on one?

[Andy]

It's extremely likely that your current 5-speed will be a pressed-on final drive. Still, be good to see what the slut 4-speeder can do!

[youngprodigys]

i think that weld is going to snap the first time you go round a long corner at speed!
be good to see what it does tho!

[Tommo]

Nah, believe me, that weld cant really snap. Dont forget the gears are still all in there, so they will still take all the beans that they originally would, the weld is really only there to stop them spinning round. What I should really have done is welded a sqaure plate in to gusset the lot but at the time I couldnt be arsed lol.

I think if its going to fail it will be the cross pin, I tried to keep the heat away from it but i think it might have got to it and made it soft.

But the proof of the pudding is in the eating, I will let you know how it goes. Hopefully if I fit it this week I should be going to york on easter sunday/monday and laying down some times.

[Nick_S]

Will be good to see what times you get down the 1/4
Might be worth scribing a marker line on that crown wheel to see if it slips round under punishment