Ok, here's the deal... I don't have 100% confirmation on this, but the guys at Quaife sound like they have an anwer to our diff problems.

The engineering department found they only need to flip the pinion gears on their Eclipse AWD front diff to make it work in our cars. Of course, since we are Hyundai owners sad.gif they really aren't willing to manufacture a whole slew of them just so they can sell one or two.

The original idea was: they would sell us an Eclipse AWD front diff, you the buyer would take the diff apart and flip the pinions on your own, and it would work. But it would work without warranty since you opened the case... Not exactly what I had in mind.

There is now **possibly** another option that Scott (my Quaife contact) is working on for us: If we can get enough people together for a group purchase, they may be willing to flip the pinions on those diffs for us. We would keep the warranty and have a working Quaife differential. I have no word on cost, no word on the actual number of purchases, and quite honestly I have no word on if they will actually do this yet.

Still, I thought I would send word out to you guys. The group purchase probably wouldn't go through until the end of January (because I'm sure you're all just as broke as me with Christmas coming up ) That gives you 2 1/2 months to scrap together $1000.

IMPORTANT NOTE!
I'm going to use this thread as a GOOD COUNT on who wants one. I don't want to hear "I might be willing if they sell them for cheap AND blah blah AND wait for me for six months until have the cash"

These are expensive units to begin with. A group buy might make them less than $1000 normally, but having them do the labor of flipping all the pinion gears for us might negate any said reduction in cost -- or maybe even increase it slightly.

So, this list is for those who have $1000 to spend on what will likely be the ONLY run of Hyundai Quaife differentials. Don't expect them to bend to our will wink.gif

These diffs will work for ALL 1.8L and 2.0L BETA-equipped motors: 1996 and later Elantras and 1997 and later Tiburons.

Thanks in advance,
-Red-

 

For those that may have forgotten what the differential does, you might want to post up a quick description of the item, and what benefits this new item will give.

 

Ok...

If you don't know what a diff is, or what Quaife does with diffs, then you don't want one.

hehe j/k

The differential in any car splits the engine output to both of your drive axles. In a rear-wheel drive car, the driveline plugs into the diff, and the axles come out the side and run the tires. In our front-wheel drive cars, the input shaft of the transmission plugs into the diff, which then runs your two axles to rotate the tires.

Unfortunately the way most differentials work, if a tire loses traction (burnouts, slippery surface, too much horsepower or whatever) then the LOOSE tire gets ALL the power. Sucks huh?

Rear-wheel drive people can get a diff called a positrack, which ALWAYS makes both axles spin at the same speed no matter if one is slipping or not -- so the power is always equal all the time. You cannot do this on a front-wheel drive car, because if the tires always spin at the exact same speed, you could never go around a corner. Oops... wink.gif

There is yet another option called a Limited Slip differential. LSD's work by moving the power from the slipping tire to the one that's sticking. So if both tires have equal traction, they both get equal power... But if one tire is spinning like crazy and the other isn't, the diff will "move" the power to the slower tire to help with traction.

These LSD's allow the tires to still be able to spin at different speeds, so it works great in a front-wheel drive car.

Quaife makes incredibly high-strength non-clutched limited slip differentials. Because they're non-clutched, they do not wear out and need to be rebuild like a clutched LSD (Kaaz makes these).

These Quife LSD's are excellent for drag racing because of their high horsepower abilities, road racing and autocrossing because it eliminates torque steer and self-centers the steering much faster, and finally they're great for a daily driver because they require no "alternate" maintenance.

Kaaz wants $980 for one of their clutched LSDs which need to be specially oiled, rebuilt periodically and cannot withstand as much power. Quaife is asking for $1000, and overall is a better unit.

Hope that helps,
-Red-

 

Will this work on an automatic? And can you give a rough estimate of what kind of power increase (if any) would come with this as well? Thanks!

 

This differential is made to WITHSTAND huge amounts of power, given that the rest of your car is up to the task. It does not add power, if anything it might actually make the car "seem" slower because you're getting maximum traction to the tires at all times.

Because it helps traction to such an immense degree, it definately helps in all forms of racing. Autocross, rally, road race, drag race, you name it and this will help get the most power to the tires.

In a manual transmission, the differential is the weakest spot... The tranny itself will deal with very large amounts of horsepower (except fifth gear, but that's a different story).

In an automatic transmission, the differential is likely the last thing you have to worry about. Your stock torque converter and valvebody assemblies are much weaker and will destroy themselves long before you hurt the stock differential.

According to KAAZ, the differential in the auto is the same as the diff in the manual, so you could use this part. But if you're wanting it because of the power handling, this will not fix the other auto tranny issues -- if anything else, because of the greater traction it may actually make the auto trannies MORE prone to failure (more stress because of the greater traction)

If you're aiming for high horsepower in your manual tranny or if you're aiming for an awesome handling road/autocross racing machine, this differential is exactly what you want. If you're going to stay stock and just want an "edge", you'd probably be better served in other upgrades.

-Red-

 

hey guys the group buy place has a group buy going on these

 

Does anyone know if the '03 Tib is sufficiently similar to the older models to use this?

The torque steer on the V6 is substantial, and this seems like a great upgrade.

 

It is a great upgrade for any car providing...
you have the $800 to $1000 to buy one
they make an application for your car.

The V6 6-speed is a 100% new transmission. No Quaife does not make an LSD for this transmission.

 

How difficult is the install? Are they sure that it will actually work on a Tiburon since they have never tested it on one? And also, how long will the group buy be going on?

 

Where in the hell did this thread come from? wink Geez guys, it's been quite a while hehe...

The reason we cannot buy from the "Group Buy Center" is because Quaife does NOT MAKE differentials for our cars. If you go read my post, we have to use the core of an AWD Eclipse FRONT differential, open the casing up, flip the pinion gears 180 degrees and then reassemble.

Unless you like voiding your $1000 brand new Quaife warranty, typically I would suggest against such things.

The intention of MY group buy originally was to see if anyone else was interested. Had we been able to drum up around 10 orders, Quaife USA would have done the needed adjustments for us without voiding the warranty on the unit.

But, since that was like... 5 months ago... It has since been dropped. If you can buy an AWD Eclipse front differential from the later 92-95 model years for a good price, then you can do this mod yourself or find a shop that knows what they're doing.