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Old 09-01-2005, 12:42 PM   #1
Turn in Concepts
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Default Cure your rear diff clunk thanks to TiC

Turn In Concepts (TiC) has a cure for the rear diff clunk. There are basically three ways you can do this. 1) Rear subframe outrigger bushings. 2) Rear diff mount bushings. 3) Combine the two.

Here's the descriptions of what we've got to help you out for each point above:

1) http://turninconcepts.com/product_in...products_id=23
The Kartboy Rear Subframe Outrigger bushings are designed to elminate the hard clunk you experience when shifting hard and fast in your Subaru. Often called rear diff bushings these parts actually sandwich above and below the forward outriggers for the rear subframe.
Please note, that there will be an increase in NVH with these, but they do help considerably with eliminating the clunk from the rear end, and tightening up the feel of the rear of the car.

2) http://turninconcepts.com/product_in...products_id=17
TiC is pleased to bring Subaru owners their second in-house developed part, the TiC Subaru Rear Diff Mount Bushings.
Are you tired of the "diff dance of distraction and deflection" when you're getting on it in your Subaru? Are you interested in better throttle response, and a more connected feeling with the car? If so, then by all means, please continue reading.

Made to fit the newer generation of Impreza chassis these mounts will also fit a number of other NEWER Subaru models. To check for fitment take a look at the pics and instructions. If your Subaru has the mount with the bushings on the ends then these will fit. (Except for the old Legacy Turbo - we know they won't fit on these).

See, the problem is this - the stock bushings are just plain wimpy. First, they are made of rubber (floppy, sloppy rubber). Second, they have a void above and below the center bore (you know, a void, like something is missing - kinda like when you're talking to someone and you realize that something in their head just ain't connected right, but you can't quite figure out what's wrong with them). This floppy, sloppy, empty headedness is fine if you're like 900 years old, and you drive like Grandma going to church in a school zone, but for anyone who likes to give their Subaru a little bit of gas on occasion they just won't do.

See, when you get on it the stock bushing flexes too much, and the void in the bushing closes quickly causing an impact. This is the source of that stupidly distracting clunk. It's also inefficient. You can also think of it this way - you're only putting out a finite amount of energy to drive the car forward. Why the heck would you want floppy, wimpy bushings soaking up some of that energy when you could be putting it to the wheels?

So what's the big deal with these?

Well, let me make a list:

Urethane instead of rubber
Stiffer than stock
No stupid voids
What else?
Well, since you asked, here's a few more things to consider.

There are others on the market making replacements for the bushings. Those are all one piece designs that require a press to install. Come on, how many people have a press sitting around in their garage? Ours is a split design. Trust us - it makes your life MUCH easier when it comes to the install.
You could get the entire STi branded part with Group N bushings, but the metal portion of the mount is the exact same as what you already have on your car. Why would you pay extra to get a part that you already have?
NVH - Hey, we've been playing with these for a while now and really haven't experienced much more NVH. Sure, there probably is some more, but quite honestly we can't really tell.
Cost - you remember those others we mentioned above? Yeah, ours cost less.

3) http://turninconcepts.com/product_in...products_id=24
The TiC Klunk Killer is made up of two parts - the TiC Rear Diff Mount Bushings, and the Kartboy Rear Subframe Outrigger Bushings. Individually each of these will eliminate the clunk from the rear diff moving around during hard and fast shifts. Together they will considerably tighten up the rear end of the car for a better feel and control with the throttle.

Please note that this combination does cause an increase in NVH, and are not for the faint of heart.

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Old 09-07-2005, 12:09 PM   #2
Turn in Concepts
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Ok folks, Tony and I have been talking about putting a kit together for a while that will include the above, and save folks a few bucks. I'm expecting to get the parts I need for the new kits so we can "test the water." The kit will be for the WRX folks out there, and we think you'll be pleased with what you see. Keep an eye on this forum as I'll be putting details up as soon as we get everything we need.
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