How many people have actually put this on their cars. What kind of results have you guys had? I know it is a PITA to put in. But will it have any adverse affects once it is in there?

I don't know of any negatives, since you have the TT brace I would almost guarantee that you will notice almost no difference since that brace is stiffer than the SU one. The rear brace is mearly a piviot point where the front brace actually does more to hold it in place.

I am waiting to see the CPE version and then I am going to buy one or the other and install it along with a sway bar and the TT mount I already have. Might as well get it all done at once.

If you have it, install it. Good luck if it is the production piece. You obviously read through the other post and saw my data and experiences with them. The only adverse affect is that if your diff didn't whine before, it will now. I have to believe that all the diffs whine, it is the mounts that either isolate it or not. Mine was whisper quiet until the mounts went it. Now, after playing with tire pressures, I get only whine when I let off the gas and coast or just a little from 55-60. The positives far outweigh the negatives though.

thank you very much for the reply. I think that I may have a returned piece from someone else. Mine looks beat up(just the paint with scratches) on the bottom and stuff.

sell it and wait for the CPE.........

?

Install time is about 2-3 hours depending on good you are with a wrench. I did not notice any whining after installing it on my car. Then again my exhaust is pretty loud. jmhinlke hears whining but like he said that is sort of a small negative to trade for differential safety.

Did you drop the fuel tank? and all that stuff? planning on doing it in 2 weeks.

also mine looks like it was already used. the bottom of it is all scratched up. I hope I got the one that fits correctly so it will be less install time

We do no sell used parts as new. When the cuts come out we powdercoat them and send them off to keep costs down.

I did not have to drop the tank. I unbolted the rear sway, and the two diff mounts and supported the diff while i worked.

Is disconnecting the driveshaft from the diff required?

yes it is
and I think Mark didn't have to drop the tank(post above) a few inches because he still is using the OEM front diff mount
there is no room to get the upper bolt through on the front diff mount when using the Turbine Tech piece so the tank will need to be dropped down

correct, I still have the OEM front diff mount. I'd have the TT one but I'm too poor lol.

They are correct, you will have to drop the tank if you go with the TT front mount. That is also where the issue comes in with this piece. If you have the stock front mount, it will hide the actual difference in length of this piece. Install time is far greater than 2-3 hours if you are installing the TT front mount too. As far as whine, the 2 cars I have installed them on (my own and MSP6COP) both picked up whine after installing all the mounts.

Mark did you get the info from the other post? I didn't take pictures, but I described it best I could about the 1/4 inch difference on the production piece vs Stock. The pre-production unit I put on my car was only off about an 1/8th so the install went easy.

yes i saw the info. From what I've seen here our next batch will be back spot on.

I'm getting some pretty good vibrations actually. around 2500-3000 rpm in 2nd and 3rd gear. The best way to describe the feeling is that I shifted to the wrong gear. Like if you tried to accelerate from under 2000 RPM. I don't feel like I have a power loss, just vibrations. Maybe because my rear brace was so poorly meaured????

Not quite right.

Major load on the diff is a reaction from wheel torque. The amount vertical reaction force at the front mount is the same as the force down shared by the 2 rear mounts, independent of bushing stiffness.

The TT brace, with oem rear bushings, will take some of the drive shaft torque reaction from the rear brace. I suspect that's why TT recomends that stiff rear bushing be used, as the oem front frame bracket is not designed to take this type of load.



How about supplying a 70 durometer bushing for the TT front brace, which is 90 duro? A little give will isolate noise, ease installation, and not hurt performance.



You have the early production model, and the TT front, so it's in a bind that stiffens it up ... doesn't help with noise.

newest batch is finished and looking top notch. From the looks of these they look to be right where they should be.

The cuts are 100% cleaner and these look awesome. In stock ready to go. I'll try to take some pictures tonight and get them up here tomorrow.

well thats great for everybody else.... can we trade?

you can if you want. yours will fit too, just take a little extra oomph. There are 25 others that have the same brace as you and we have not had a single return or phone call about fitment issues.

Who is going to pull it out after all that trouble of getting it in? I'm sure MSP6COP would gladly trade his in. I doubt he ever wants to take it off though because of what we went through to get it in.

Yes I would like to trade this one back. I am oversea's I am about to place and order in for some much needed gaskets and stuff. can you send it with that? And I will send your back in the same box I get all of my stuff in.

I cannot send an extra one without it being paid for first. I would send that one back as soon as you can so we can swap it and send it out with your other stuff you want. I suggest it this way because the number crunchers upstairs will want you to cover shipping for the Diff mount both ways. If you have an order waiting to go out I can just throw the new one in there and it won't bother anyone here.

what address should I use? and how can I let you know which shipment is mine? I only have USPS to send it from.

hey I sent in the order. 29335. Left a comment on it to better coordinate things. I am sending off the mount that I have on monday.

PM'd

Bump for an update and pics VelocityRed6?

I've got a pile of parts waiting to be installed once I get a hold of a good aftermarket rear mount. Any possibility of getting a softer durometer bushing (70d) for the TT front at the same time, as suggested by another member? Mine is not yet installed so I'd be happy to measure all dimensions if that helps you to source one.

SU would be the logical supplier. They sell a rear brace with 70 duro, and also sell the TT stuff. They know the TT dimensions. SU where are U.

Making a matching durometer bushing for the TT mount would take about 3-4 weeks. I'll put in the order for it, but our pours do take a while to make from our supplier.

Thanks for the update VelocityRed6! I will definitely buy one if you are going to produce it. I'll order both it and the rear StiffDiff at the same time, once this bushing is available.

And don't worry, it's still 500x+ stiffer than the oem front marshmellow mount. It's all good.

i seemed to have spaced on this whole topic besides a few threads about sheered bolts and cracked housings a long time ago.

hate to ask... whats the more important brace to upgrade? was I wrong in thinking how they both worked front rear diff brace kept rotating force under control and the rear rear diff brace (this su one) basically just holding the diff to the car?

wrong you be.

1) drive shaft torque want's to spin the differential same way. This is resisted by the 2 rear bushing, left pushed down by diff, right pushed up.

2) drive axle torque want to spin differential opposite to wheel rotation. This results in front bushing pushed up by diff, and both rears pushed down.

The left rear mount gets the double load, pushed down resisting both torques ... that's why it's the side of rear mount that breaks.


A rear mount upgrade does nothing to help the front, and a TT front upgrade does nothing to help the rear. You need both, preferably with 70 duro bushings.

I do think the front is the one that fails most, so if only one can be done, I'd do it (with pending SU 70 duro bush).

so if u stiffen the bushings, doesn't that make the bolts to take more load? unless i was mistaken it wasn't the bolts that were failing, its the actual mount snapping (referring to the rear diff mount)

Two-fold problem. The front mounts were breaking the two bolts on the side because of twisting of the soft bushings. The rear mounts were snapping off the left leg after front mounts and/or bushings were upgraded. Remember the stock bushings did not prevent the diff from moving around. Launch the car hard enough and you will here it slam into stuff underneath the car. Front mount came out first and revealed the rear mount problem.

haha so one compounded the other problem. nice... after reading about this and that strengthening. something has to be the weakest point. and I think its the bolts

Bolts are not weak point with upgrades, axle is. And now hd axles are available.

Front bolts broke because of offset in bad bracket design, creating a bending load at the bolts. Stiffer front bushings were never a fix for this problem ... TT mount front mt provides balanced support of front bushing.

i'm starting to hear a clunking noise :/ making me worried. so I want to install this/buy it asap along with hopefully the cp-e rear mount + wsb

OT: can it be done with the car jacked up? i could pay someone to put it on a lift and install it.. but ya know. if u can do it urself.. do it

I did one yesterday for a local guy here in his driveway. It's about a 3-4 hour job by yourself. You just need to be creative with the your tools.

I'm in for a softer bushing for my TT diff mount also!

Bump for an update. Any ETA on the softer bushing for the TT front diff mount?

We haven't had the time to get through to our Urethane provider to start making them. Once the holidays are over I am definitely going through with it.