Quaiffe LSD + T.R.E. Stage II = I love my FWD again

[turboglenn]

Just some insight for anyone considering a quaiffe LSD for their FWD eclipse. I know i was skeptical about the gains when first considering one after i saw the price f the unit. Well I recently blew my stock trans and the fastest replacement was to order a TRE unit, and i figured while I'm having it built I'll ask if he has a quaiffe. He did, and so i took the chance while having the tranny built to spend a good 1300 bucks on the diff alone, but I'll say one thing..worth every penny!!!!!

At first you barely notice it's there when driving normal, but once you start to beat on the tranny as it breaks in, this diff just shines through more and more with every shift, launch and lane change. Normally my car would spin one tire anytime i got on it hard under 90MPH through the first 3 gears. Now that both tires are locked under power it just grips and goes. At first it made the car "feel slower" because it wasn't getting crazy with torque steer and tire spin, but after officially launching the car a few times over the last few days, the difference is just plain amazing. I'll spin a little on the launch and then it grips and goes, sometimes it spins through the top of first pretty hard but as soon as i grab second gear the car is almost comparable to the acceleration of a decently built AWD. I'm probably doing better launches now on a set of "large" street tires (225/55/16 = kinda meaty)With both of them hooking up I'm probably pulling as hard or harder than i did on slicks with the pegleg stock diff. Normally it would spin one slick all through 2nd and hook in third, now I've got traction as soon as i hit second gear

Moral of the story, if you can get a quaiffe for your FWD, BUY IT!! I was so sick of my FWD and hating the way it spun so much that i was disgusted to have to buy the tranny and diff to get it back on the road. But after driving it, i don't regret a bit of the 3k dollars it took to get me going again. I have to bite my lip when seeing the credit card bill though


The diff alone helped cornering so much it's insane, before it would under-steer and spin one wheel under acceleration out of a turn, but now it grips and goes whatever direction i point it in(but it still feels like a 2g pig on turn in though).

 

[Twistaye]

Wow, glad to hear that you're doing well, did you ever get your methanol injection figured out? Sounds like when my tranny finally decides to let go I'll have to invest in a quaiffe diff. 2nd is grinding and 4th is gone, its only a matter of time!

 

[turboglenn]

Yea, i got the meth system working great now. I ended up with an M10 nozzle running about a 70% methanol 30% water mix and i don't get any knock on 22 psi and 18* timing locked in from 3500 RPM and up under boost higher than 10psi. (up until 10psi i'm running from 25* @ 1psi down linearly to 18 and holding from there on) So i'm pleased with that. I'm not running any more boost until i get some better crank case vents, after putting all new gaskets through out the motor when i put the cams in and did the BSE i'm blowing my dipstick out and blowing oil out of the oil cap under higher boosts. I'm actaully kinds puzzled as to how tight the case got after all new gaskets. I haven't blown a dipstick out in years, now i'm doing it every pull and i know the motor is not broken or low on compression.

Now i'm having ignition troubles at 7200 RPM it starts breaking up, but untill then as long as i shift before that the car is feeling amazing, i might actually get in the ever elussive 11's this year. I've been knocking on that door with a best of 12.08 @ 117 on only 19psi, any more boost and i just got slower because of wheel spin, even on slicks. So i hope to get kicked off the track for 11's without a cage this summer!

Get one of Jon's trannies if you can. They are notchy to shift untill broken in ( and i mean REAL notchy, wrestling 2 hands to get in gear when it's cold outside and the car is first driven) But after it breaks in the shifting gets butter smooth and the diff is just icing on the cake, i call it my Faux AWD or "Faux Wheel Drive" = FWD if you will

 

[99gst_racer]

Just wait until you break the 400 whp mark. Traction goes to crap all over again.

At 300 WHP, my old Quaife was a godsend. At 400 WHP, I could hardly tell it was there.

 

[turboglenn]

Just wait until you break the 400 whp mark. Traction goes to crap all over again.

At 300 WHP, my old Quaife was a godsend. At 400 WHP, I could hardly tell it was there.

The 332/312 in my profile is a pump gas tune at 18-20psi ( it wasn't holding steady because of the spring in the WG being only an 8psi spring and the EBC was messing up).

I've had it up in the 24psi range and i did spin really bad in 1st and 2nd again, but third was mostly hooking up and fun as hell. Fourth torque steered again but was still pulling like mad. And this was on street tires, i imagine slicks would get a lot better traction now too. As soon as i get my crank case venting fixed i'll be pushing up to 28psi again and we'll see what happens, that's where i made the 450+ last time. AS long as the meth will keep me from detonating on pump gas i'm going to push for as much boost as i can make even if i have to run low timing figures to move the air, i want to try some of D buschur's pump gas and high boost theories.

By the way, this trans is why i haven't ordered my springs from you but my woman is going to buy them for me this month for my birthday. I'll be PM'ing you

 

[las_vegaslazer]

The 332/312 in my profile is a pump gas tune at 18-20psi ( it wasn't holding steady because of the spring in the WG being only an 8psi spring and the EBC was messing up).

I've had it up in the 24psi range and i did spin really bad in 1st and 2nd again, but third was mostly hooking up and fun as hell. Fourth torque steered again but was still pulling like mad. And this was on street tires, i imagine slicks would get a lot better traction now too. As soon as i get my crank case venting fixed i'll be pushing up to 28psi again and we'll see what happens, that's where i made the 450+ last time. AS long as the meth will keep me from detonating on pump gas i'm going to push for as much boost as i can make even if i have to run low timing figures to move the air, i want to try some of D buschur's pump gas and high boost theories.

By the way, this trans is why i haven't ordered my springs from you but my woman is going to buy them for me this month for my birthday. I'll be PM'ing you

What theories on hight boost and pump gas does buschur have?

 

[dsm-onster]

Probably, this: 'there's still good power with pump gas at 30 psi and later timing'. Which I agree with somewhat. A good, quick-burn chamber is very important. . . This means HIGHER compression, actually. You then also get the benefit of better brake specific fuel consumption. . . Boy, is that another subject!

Just wait until you break the 400 whp mark. Traction goes to crap all over again.

At 300 WHP, my old Quaife was a godsend. At 400 WHP, I could hardly tell it was there.

Oh yes! about 375 crank hp and my traction through 3rd was gone again. At least I could put 325 to the ground in first instead of 200 .

There's more to do. And you'll see fantastic results again. A good lsd is PARAMOUNT. There's still way more you can do and doesn't cost an arm and a leg. So don't give up at that level. Just take a good, hard look under your car for periods of time and do some thought experiments to get a feel for how your suspension functions during hard accell. Low ride and consistant contact patch is the name of the game.

 

[dsmulla]

Just some insight for anyone considering a quaiffe LSD for their FWD eclipse. I know i was skeptical about the gains when first considering one after i saw the price f the unit. Well I recently blew my stock trans and the fastest replacement was to order a TRE unit, and i figured while I'm having it built I'll ask if he has a quaiffe. He did, and so i took the chance while having the tranny built to spend a good 1300 bucks on the diff alone, but I'll say one thing..worth every penny!!!!!

At first you barely notice it's there when driving normal, but once you start to beat on the tranny as it breaks in, this diff just shines through more and more with every shift, launch and lane change. Normally my car would spin one tire anytime i got on it hard under 90MPH through the first 3 gears. Now that both tires are locked under power it just grips and goes. At first it made the car "feel slower" because it wasn't getting crazy with torque steer and tire spin, but after officially launching the car a few times over the last few days, the difference is just plain amazing. I'll spin a little on the launch and then it grips and goes, sometimes it spins through the top of first pretty hard but as soon as i grab second gear the car is almost comparable to the acceleration of a decently built AWD. I'm probably doing better launches now on a set of "large" street tires (225/55/16 = kinda meaty)With both of them hooking up I'm probably pulling as hard or harder than i did on slicks with the pegleg stock diff. Normally it would spin one slick all through 2nd and hook in third, now I've got traction as soon as i hit second gear

Moral of the story, if you can get a quaiffe for your FWD, BUY IT!! I was so sick of my FWD and hating the way it spun so much that i was disgusted to have to buy the tranny and diff to get it back on the road. But after driving it, i don't regret a bit of the 3k dollars it took to get me going again. I have to bite my lip when seeing the credit card bill though


The diff alone helped cornering so much it's insane, before it would under-steer and spin one wheel under acceleration out of a turn, but now it grips and goes whatever direction i point it in(but it still feels like a 2g pig on turn in though).

Trust me, I know exactly what you mean about the Quaife. Daren_P on this board sold on the unit. I was freaking out when I was making the payment but like you said it was worth every penny. With you TRE tranny I bet it feels even better. Hey, for us FWD'S even a little bit of traction puts a smile on our faces!!