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  #1  
Old 01-20-2013, 12:56 PM
msm msm is offline
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? on rear end

Is the rear end in the svx posi trac or limited slip
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  #2  
Old 01-20-2013, 01:59 PM
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Re: ? on rear end

Limited Slip
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Old 01-20-2013, 02:45 PM
1986nate 1986nate is offline
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Re: ? on rear end

It's a viscous LSD. When one side slips, the fluid is heated up and power is transferred to the other rear axle.
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Old 01-20-2013, 03:18 PM
Tireiron Tireiron is offline
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Re: ? on rear end

Quote:
Originally Posted by msm View Post
Is the rear end in the svx posi trac or limited slip
And posi trac and limited slip are technically the same thing, just that posi trac is the GM brand name for their limited slip axles. There are different types of limited slip technology. Clutch pack, viscous, torsen, etc. All of these limit the amount of wheel spin only 1 tire can see on an axle.

These are not to be confused with locking diffs, which physically lock the wheels together keeping them at the same speed equally. There are also different types of locking diff technology.

A limited slip is a much better diff for a street car because they are smooth and give just the right amount of extra traction needed. Locking diffs are used more in off-road trucks and extreme traction situations, but can be uncomfortable and unwieldy on the street.
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  #5  
Old 01-20-2013, 03:46 PM
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Re: ? on rear end

What's the best fluid to use in the rear ? ( I know that is a loaded question )
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Old 01-20-2013, 03:47 PM
1986nate 1986nate is offline
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Re: ? on rear end

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Originally Posted by msm View Post
What's the best fluid to use in the rear ? ( I know that is a loaded question )
Just don't put any LSD additive of any sort. 75-90 or 80-90 gear oil depending on the climate
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Old 01-20-2013, 04:13 PM
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Re: ? on rear end

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It's a viscous LSD. When one side slips, the fluid is heated up and power is transferred BOTH OF THE rear axles.
I know that is what you meant!
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Last edited by svxfiles; 01-20-2013 at 04:44 PM. Reason: Dyslexia's UNTIE!
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Old 01-20-2013, 04:14 PM
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Re: ? on rear end

Quote:
Originally Posted by msm View Post
What's the best fluid to use in the rear ? ( I know that is a loaded question )
I like Mobil1 75/90.
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  #9  
Old 01-20-2013, 04:23 PM
1986nate 1986nate is offline
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Re: ? on rear end

Quote:
Originally Posted by svxfiles View Post
I know that is waht you meant!
Yeah, I should have included the word "more" as more power is delivered to the wheel with more traction.
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Old 01-20-2013, 05:13 PM
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Re: ? on rear end

Well to be completly testnical here.

It reduces the amount of power going to the wheel, with least traction.

Harvey.
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Old 01-20-2013, 05:51 PM
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Re: ? on rear end

What is the difference in the AWD once you remove the automatic and go standard.
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Old 01-20-2013, 06:00 PM
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Re: ? on rear end

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Originally Posted by Conn SVX View Post
What is the difference in the AWD once you remove the automatic and go standard.
If it is a 5 spd, it used a Viscous coupler in the center differential and if done properly, you still retain the LSD in the rear. The MT center diff is 50/50 split until there is a difference front to rear and it can transfer the amount of power front/rear. 6 spd is the same, even with DCCD however with the DCCD you can adjust the bias of the center differential, not the actual amount of power it sends to the front/rear.


Feel free to correct any mistakes, Harvey

Last edited by 1986nate; 01-20-2013 at 06:03 PM.
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Old 01-20-2013, 06:28 PM
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Re: ? on rear end

Quote:
Originally Posted by 1986nate View Post
If it is a 5 spd, it used a Viscous coupler in the center differential and if done properly, you still retain the LSD in the rear. The MT center diff is 50/50 split until there is a difference front to rear and it can transfer the amount of power front/rear. 6 spd is the same, even with DCCD however with the DCCD you can adjust the bias of the center differential, not the actual amount of power it sends to the front/rear.


Feel free to correct any misunderstandings, Harvey
Yes well, as you adjust the DCCD it does change the amount of torque delivered to the front/rear wheels. As the clutch is applied it moves torque from the rear to the front.
I have read on a few Forums, that this is bull$hit, but it is so. The same applies to the VTD auto. As the pressure on the clutch changes it moves torque from the rear to the front.

Harvey.
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  #14  
Old 01-20-2013, 06:57 PM
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Re: ? on rear end

For whatever my opinion is worth.......

it's different than the others. I suggest a crc gear lube that they make at an excellent price under their Sta Lube brand. It's api/gl-5 sae 85w140. It's works extremely well for everything and meets essentially every specification out there for anything because it's vastly superior to the gear oils (including the synthetic ones) you see on the shelf at discount auto parts. You can get it from napa just pay attention to detail to make sure you get the right one (there are half a dozen different Sta Lube gear oils). This is the stuff I use in my diffs: http://crcindustries.com/auto/?s=SL2433
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  #15  
Old 01-21-2013, 06:37 AM
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Re: ? on rear end

I guess my question should be , is the 5 speed as effective as an AWD as it was when it was an Auto?. I have my stock rear diff.
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