Anybody? Even the 2010 4.11 gears?

 

We should do it... I wish you were closer I'd say lets swap em this weekend. I think it would be mutually beneficial.

I think texangenesis has done the swap. I might be messing up his username though.

 

What do you drive?

 

I'll be attempting to swap a LSD with my open differential next week.

Mine is just going from a base Auto 3.8 to a limited slip from an auto 3.8 track.

I'm pretty sure the gears are staying at 3.74? Just going from open to limited.

 

Hey you wouldn't be insterested in tearing your old pumpkin apart and shipping me the ring and pinion would you

 

I swapped my 3.93 for the 3.8 3.73 LSD and he obviously did the reverse.

 

I believe we have a TX member who did. Try PMing TexanGenesis

 

PM'd. Thanks WildBill

 

2.0t rspec mt. But I'm in Cali. Only way it would be possible is if we could swap while my car is out of commission for a week in November lol.

 

If only you were local! we could have swapped the whole diff over since we both have LSD. Well I'm interested for November if you are. We could ship our gears to each other (shipping would be cheaper that way). I have a daily driver anyway. I'll keep you posted if I get serious about this and you're interested too.

 

Speaking of swaps...what did it cost you for the swap shazz? Cheap enough to warrant getting the OEM LSD over a kaaz or cusco? I'm still dumpster diving for brembos...

 

It's half the price and you don't have to open the differential housing to replace the gears. I PM'ed more detailed info on what I paid (keeping it private because the seller has other items for sale and I'm not comfortable disclosing negotiated prices).

Here's some info I gathered about the swap so far:

I have been eyeing ebay for one and the average price goes for $750. So I would say anywhere from $600 to $800 shipped is a fair price. I don't have many junkyards near me let alone a yard with newer models so I'm not sure how much a junker would costs.

All together I know you need:
- the LSD gears or the entire pumpkin.
- 2 gaskets
- gear oil
- Tools (I need to buy torque wrenches)
- If you are swapping the gears (internals) then Jay at SFR recommended the OEM shims. Also need another gasket (not sure) and sealant.
- An alignment after completion.

Swapping the gears is added work so I just went ahead and only been scoping out the entire assembly for a direct swap.

I will add the DIY information here too. There is also some cons to having an aftermarket differential like wheel chirping while turning (aka in a parking lot at low speeds). Same goes for welding an open one closed.

Also take into consideration what gear ratio you want to have. I'm staying the same so the only improvement I will have is having both wheels spin at the same time. Resulting in better launches, hopefully better cornering, and less wheel spin...possibly .2 shaved off the 1/4, but this is just a theory. Others are opting for higher or lower gearing for better acceleration, but at a loss of top speed. Gas mileage will suffer a little bit too.

I have not done the swap yet as I am waiting for the mailman, lol. I also will be dedicating a day to this because something always happens when doing installs and they take longer than expected. I believe it should take somewhere between 2-4 hrs to DIY. Others have reported that a shop will take 1-3 hrs. I plan on getting estimates tomorrow from local transmission places.

^Correct me if I'm wrong....This is just info from me reading about this on these threads so my interpretations or understandings may be flawed^

DIY Guide: http://www.gencoupe.com/articles-driveline/52467-open-differential-lsd-swap.html

 

That could actually be a decent option. Its so much easier to do the whole pumpkin but gears is easy too. I'll keep you updated.

 

I know it would, but shipping would be retarded expensive lol. Alright, just PM me and let me know!

 

3.55 LSD ass. on my garage floor...
I am lazy!

 

did the swapp with my 2.0t base open diff with the 3.8 3.73 LSD not that hard. did it on the floor with jacks

 

whats your cruising RPM? Did you notice much of a hit in acceleration?

 

Shipping information for those wondering:

The entire assembly weighs 80 lbs. Not to sure about just the gears.

From Libertyville, IL to 15 miles East of Philadelphia, PA the costs was $65 shipped.

A small crate was required because of the weight and fear of tearing through a cardboard box.

Hope this helps with everyone's decision/purchasing.

 

There's shimming involved when swapping gears?

 

See step 19 of the DIY to get a look at what is involved for swapping the gears.

Steps 1 through 18 are for just swapping the differential housing.

 

I got the 3.9 gears - it was one of my first mods. Stripes - BH Bomber are other members that have them installed as well.

benefits - you do run a little quicker in the 1/4 maybe .3 faster than 3.5 gearing.
- more fun getting your car accerating from a red light
- cannot confirm this but I think the trap speeds are slightly better, but to be fair I didn't run at the track with the 3.5 gears.

Drawbacks - higher rpms on the highway - uses more gas of course

i got mine off Ebay - they seem to always have Genesis rear diffs on there. I have never seen a 4.11 but I guess that would even be better. You just need to make sure you get a LSD unit (cause allot of them are STD meaning standard not LSD - and it will have that on the Diff sticker.

best of luck with your search...

 

Anyone close to MA/NH with a 3.8 manual thats wants to swap with me?

Everyday I drive my car I think about this mod. Hyundai why did you mix our cars gears up?!

 

Yeah I need to get an LSD and brembos, and then I have a track model with brown seats :rofl: I'm hoping to get both for about 1500, but I know the brakes are going to be a little tough. Has anybody done any research as to whether there are BBKs from other car models that would be easy swaps? I mean like, subbies/mustangs not the equus kit. models with big markets. I'm not sure exactly what all would be involved as far as speccing it.

 

^ yeah but you need to make adapter brackets.

 

Could you elaborate snoop a loop? What am I adaping? Hoses? Mounts? what all has to be changed? just adapter brackets for the calipers? Or do I have to swap hub assemblies/rotors?

 

Went over the DIY again last night.

I'm confused as to why the OP of the DIY needed to compress his springs and move the strut out of the way for the reinstall. These steps were not needed to remove the axle shaft from the wheel hub (during the first part of DIY - unistall steps 1-18).

Can anyone comment as to why the OP of the DIY decided to compress his springs and move his strut out of the way?


Also the Differential housing arrived today right before I left for class. Managed to remove the top of the crate and packing material to get a glimpse of it, lol. Will get a better look at when I return home.

 

Deleted

 

Might need custom hoses as they might have different specs on the caliper end.
Will probably need hub brackets, thing to correctly space the caliper from the hub based on rotor differences.

Would not be worth it to try and adapt a different hub to the coupe.. waaay too much work.

 

I'm doing the swap on Sunday.

Bought the gear oil and am going to rent the torque wrenches on Sunday.

2 questions:
Does anyone know if the retainer rings need to be replaced? I spoke with my parts department today. The guy said that he could not find the retainer clips for my vehicle. He told me it may be needed just for the manual transmission, I have the ZF auto.

Also, I spoke with Pepboys about the tools. Anybody know if the axle wrench they rent will work with getting the shaft out of the wheel hub? They told me their tool was for removing the entire axle, I'm assuming from the differential housing. I'm looking for a tool that will connect to the axle where it ends in the wheel hub, as you rotate the wrench, there is another mechanism that pushes the shaft towards the differential and pops it out from the wheel hub.

I believe that I have acquired all the necessary components and tools, but just making sure this goes as smooth as possible without any hiccups.

 

I have done the swap and it is sweet. I do have a problem with the 2.0t, the cruise control will not set in 6th gear. I have the 3.8 and I have zero problems but I may have to swap back due to the cruise issue in the 2.0t.

 

Any tips/tricks you want to share? Any problems you may have run into?

I already have the DIY and shop manual saved, but I'm looking for first hand accounts too.

 

The swap is complete. Unfortunately we gave up doing the swap right before disconnecting the lower control arm. We ran into nothing but problems the entire time trying to do this. First the bottom caliper bolt would not budge and there is absolutely no room to get a proper tool in there. Got it out of the way, then the entire wheel hub shifted on us as we disconnected the lower assist arm. None of the bolts were coming loose so we were constantly hammering on wrenches and using the breaking bar. So a decision was made to put it back together before it got any worse. It just started to get the point were our confidence was crushed and the fear of the reinstall going south on us as well.

I bit the bullet and had a transmission place do it. On the plus side, the guys working there kept asking a ton of questions about the car. I'm pretty sure the owner wants a coupe now.

 

haha good deal. I'm surprised it was too difficult for you to do on your own.... lot of road salt where you're at?