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Old 08-23-15, 05:06 PM   #1
neomacz
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Default IS350 Cusco LSD

What do you guys think about this part?
http://www.cusco.co.jp/search/en/ind...=&category=lsd

Is it easy to install? I saw this in Yahoo auction Japan and thinking about buying it.
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Old 08-24-15, 05:26 AM   #2
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Do u have the Canadian version IS? I'm not sure what type of LSD we have in this car? How would you know without having apart? Wondering if it's possible to tighten it?
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Old 08-24-15, 08:48 AM   #3
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An LSD is NOT an easy part to install. The rear pumpkin needs to come out of the car, seals and bearings will likely need replacement, the housing may need to be ground down, and then the gear lash may need to be adjusted.

No IS350s have factory LSDs, they simply weren't available with an LSD.
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Old 08-24-15, 11:30 AM   #4
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Quote:
Originally Posted by WylieKylie View Post
An LSD is NOT an easy part to install. The rear pumpkin needs to come out of the car, seals and bearings will likely need replacement, the housing may need to be ground down, and then the gear lash may need to be adjusted.

No IS350s have factory LSDs, they simply weren't available with an LSD.
I agree it needs to be disassembled but it's still possible with time and patience. Not an ez task but still possible.
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Old 08-24-15, 12:32 PM   #5
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My recommendation is purchasing a known, good donor rear end, and install it and the LSD into the car as one piece. It's really not that difficult. From all of the LSD installs I've spoken to the owners, and none of them said the installers had to install any different shims from any additional runout. Yes, grinding will likely be needed and yes, you'd be doing yourself a favor by installing new seals/bearings; but with the right tools and patience, it's not really difficult.
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Old 08-25-15, 09:23 AM   #6
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Thanks for the input.

I saw that many people use OS Giken brand, but the price is 2-3 times of this Cusco. Are there many differences? Is it because this brand is not reliable?
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Old 08-25-15, 11:09 AM   #7
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find out what shipping will cost. At current exchange rate of yen to U.S. that works out to less than $1200 U.S. Be prepared for $200 shipping since it is heavy. That works out to about 1/2 OS Giken. Ask cusco if carrier needs to be ground. ATS does (up to 2010), OS Giken apparently not. Oil seals will need to be replaced. I don't see where bearings and races will necessarily need to be replaced. Check for reviews of cusco LSD, and see how others like them. Let us know how you make out.


Stupid forum can't take a less than sign, I guess. That seems to be why my post was dropped.
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Last edited by scott1256c; 08-25-15 at 11:14 AM. Reason: dropped 80% of my post
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Old 08-25-15, 11:26 AM   #8
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FYI, at the time (couple years ago), my ATS set me back about 170 000 yen, including shipping.
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Old 08-25-15, 11:58 AM   #9
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Oops! I left out a couple of important charges!
Import duties, which I think will run you around 10%.
Customs brokerage. No idea of this charge. Check with the carrier. But that alone could be another couple of hundred dollars, if you aren't careful.
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Old 08-25-15, 11:35 PM   #10
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Quote:
Originally Posted by scott1256c View Post
Oops! I left out a couple of important charges!
Import duties, which I think will run you around 10%.
Customs brokerage. No idea of this charge. Check with the carrier. But that alone could be another couple of hundred dollars, if you aren't careful.
Scott is it really worth it though? Changing it out? Couldn't you adjust it?
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Old 08-26-15, 08:06 AM   #11
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It isn't cheap. What adjustment are you talking about? You are going from an open diff to a limited slip diff. There is no adjustment to an open diff that I know of that will improve it much. Either you want to go around corners fast enough that a LSD might help or you don't. Or you want to do the 1/4 mi. and get better traction. If you don't care about those things, then save your money. If you only care about trying to pass the guy next to you when you are already at a running start, there are mods that will help with that more than this.
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