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Old 10-05-2000, 07:36 AM   #1
Fido
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Post Manual Tranny RS 4WD, not AWD!?

I just read through that FAQ post, and now I'm totally puzzeled. My Manual Tranny RS is constant split power to all wheels (50/50) and is not automated due to changing weight transfer and such? So when I accelerate hard, my power is still 50/50?
Sorry if this makes anyone annoyed because this was 'answered' in the FAQ post, but I just don't get it...Subaru sells them saying that there's transfer of power...Can someone please quiet my fears of getting somehow jipped?
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Old 10-05-2000, 07:40 AM   #2
RidinLow
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It's 50/50 until something starts slippin.
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Old 10-05-2000, 07:47 AM   #3
Mike Smith
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Cool

Yes there is power transfer in the stick - it uses a viscous lockup from front to rear instead of the auto's electronic clutch. I really can't see why they don't use the viscous for everything - it really seems to be a much simpler setup. I believe the power transfer on the stick is 50-50 until the wheels start slipping then it transfers more to the non-slipping wheels. In the auto, I think it's more like 60-40 favoring the fronts until slip occurs. Anyone with more info?
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Old 10-05-2000, 07:49 AM   #4
Fido
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ah, well I'm not unhappy with a 50/50 split normally, as long as the system reacts quick enough to keep me from slipping. There was once I was at a stop on a little hill and it was wet out, and I decided to see if I would slip or not, so I let off the clutch and gave it the gas...Only a very slight bit of hesistation and off I went...I actually felt the point where I /would/ have slipped had I not had AWD...My corolla would have just sat there spinning, slowly going backwards down the hill
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Old 10-05-2000, 07:49 AM   #5
Sean
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Well, I was surprised as well. I was talking with my dealer about racing and such and he said that the MY98 manuals rock because they don't do power transfer. Just straight 50/50 all the time with no transfer lag, as he called it. The new 2.5 RS has an LSD, which is different than older models, correct?

Trunkmonkey is here! There is no cone...
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Epinions Automotive Reviews by `Sean
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Old 10-05-2000, 07:49 AM   #6
RidinLow
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I thought the auto was 90/10? & I think the auto's clutch transfers power much faster than the manual's viscous system.

Hey Mike, when are you on the air again?
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Old 10-05-2000, 07:50 AM   #7
Nat
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Also, since my 99 has open diffs front and rear, power really only goes to one front tire and one rear tire, right? As I percieve it, powere only goes to one tire without limited slip, correct?
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Old 10-05-2000, 07:53 AM   #8
Fido
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Lemme get my MY01 brochure and see what it says.

Edit: My MY01 Brochure says that 2.5RS has as standard a Viscous limited-slip rear differential.
It also says that Manual transmission models have a viscouse-coupling locking center differential, automatic transmission models have an electronically managed continously variable transfer clutch, and 2.5 RS models have the VLS rear diff.

Nowhere does it say that the AWD doesn't do exactly as they market it as. Distribute power from front to rear, and to and from each rear wheel as needed. In fact, in the MY00 brochure, it has cool little pictures of the power transfer ala techincal drawing.

[This message has been edited by Fido (edited October 05, 2000).]
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Old 10-05-2000, 07:54 AM   #9
Em
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Isn't the front differential of a car always limited slip?
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Old 10-05-2000, 07:55 AM   #10
Mike Smith
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The 2000s have a rear viscous LSD in addition to the center unit. I can't say as I've ever "felt" mine engaging - but then I am a male and therefore insensitive, right?

G - I'm still on every morning from 6-10 - 98.5FM or at www.wnyr.com
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Old 10-05-2000, 07:56 AM   #11
RidinLow
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Can I call in to chat about Subies?
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Old 10-05-2000, 08:00 AM   #12
Fido
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Edited my above post to include information from Brochure.
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Old 10-05-2000, 09:18 AM   #13
ColinL
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The latest issue of Drive talks about both AWD systems extensively (at least more so than subaru.com or the owner's manual) but they DO NOT say what torque bias ratios the MT supports.

Knowing how the MT works though, with the front differential driven off one end of the output shaft and the center diff hanging off the other end... I would be inclined to agree that it's 50/50 with only enough slippage to get around corners without binding.
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Old 10-05-2000, 09:20 AM   #14
cakagan
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If I remember correctly, the diagram in the brochure for the '98 RS shows the power transferred to the rear wheels on acceleration, and to the front during braking...

-Kagan
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