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Old 08-21-2013, 10:04 AM   #26
CarlosVanCasasB
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Ok now for an honest opinion, never had a slip diff, so am I likely to crash it soon? Lol!
Do they make grinding sounds? They need clutch plates, how much? How long does a diff block last? I plan to take the car 3 times a year to a circuit

Thanks
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Old 08-21-2013, 06:54 PM   #27
handmdmr46
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Lightbulb Subaru Differential

I have been a master certified technician for over thirteen years and have specialized on Subaru repair for mainly that whole time. The only differences you have to worry about are the gear ratios. You cannot change the gear ratio it must be the same as the one you removed. Other than that there are some open differentials and some that are limited slip. When we replace Subaru transmissions with used units, sometimes we have to replace the differential also. Check out http://mdhmotors.com for some helpful Subaru advice, and you can also comment us for personal questions that we would be more than happy to answer.
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Old 08-21-2013, 07:33 PM   #28
Uncle Scotty
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Quote:
Originally Posted by CarlosVanCasasB View Post
Ok now for an honest opinion, never had a slip diff, so am I likely to crash it soon? Lol!
Do they make grinding sounds? They need clutch plates, how much? How long does a diff block last? I plan to take the car 3 times a year to a circuit

Thanks
ok.....depending on the rearend you get.....new ones....meaning 2000 and newer r160's are almost all(all in the usa...dunno about other markets) 'viscous' type LSD....which means that the diff unit is sealed and uses regular NON-lsd type fluid.....these are usually considered the least performance oriented as the amount of 'limited slip' isnt a lot....they are pretty much silent and you wont really know its there very often.....not likely to crash

then there are the clutch types from some vehicles...sold in the USA and this is likely not the same in other countries.... from 1985 - 1991
if you find a subaru that is "4WD" it likely has a clutch type lsd...look for the sticker on the rear diff cover
these NEED the proper LSD fluid...and are considered more 'performance' oriented

and there are many aftermarket LSD that can be installed as well....these come in sevreal flavors and can cost $$$ to $$$$

these type lsd's need to be 'tuned' to what the driver intends to use the vehicle for....and can be noisey and can make the car a bit 'twitchy'...research these

this type can be a bit complicated...and there are other types available from the aftermarket

just a couple quick links


http://kmhafer.datsun510.com/Subaru.htm

http://en.wikipedia.org/wiki/Limited-slip_differential

Last edited by Uncle Scotty; 08-21-2013 at 07:49 PM.
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Old 08-21-2013, 07:58 PM   #29
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I thought those were turbo 2.0 diesels? 240hp/420tq hence the 6spd only avail. And apparently the r160 out back!
dunno anything about them, really....other than they dont sell them in the usa

a friend had one of those 335d bmw's with a 'stage1' tune and it was

it would ROAST the tires at any speed under 100mph with a hard jab on the pedal

it was a REAL beast....iirc it was supposed to be 340whp and 540wtq or something crazy like that.....and he was getting 32-33mpg driving it like he stole it

i drove it and it shocked the hell outta me.....made my 330whtq wrx seem like a pedal car

he got tired of buying tires for it every month and sold it....and bought an mdx.....likes that but wants the bmw back

Last edited by Uncle Scotty; 08-21-2013 at 08:06 PM.
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Old 08-21-2013, 08:53 PM   #30
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Originally Posted by Uncle Scotty View Post
dunno anything about them, really....other than they dont sell them in the usa

a friend had one of those 335d bmw's with a 'stage1' tune and it was

it would ROAST the tires at any speed under 100mph with a hard jab on the pedal

it was a REAL beast....iirc it was supposed to be 340whp and 540wtq or something crazy like that.....and he was getting 32-33mpg driving it like he stole it

i drove it and it shocked the hell outta me.....made my 330whtq wrx seem like a pedal car

he got tired of buying tires for it every month and sold it....and bought an mdx.....likes that but wants the bmw back
That was my other "next car" for that exact reason. Kinda like an r34 skyline diesel. I6 turbo diesel without the weight of cummins under the hood would be nice!
Those subaru diesels are quiet and dont vibrate from the youtube clips i could find, so this will be my next swap for the challenge.
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Old 08-21-2013, 09:21 PM   #31
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Originally Posted by kheff46 View Post
That was my other "next car" for that exact reason. Kinda like an r34 skyline diesel. I6 turbo diesel without the weight of cummins under the hood would be nice!
Those subaru diesels are quiet and dont vibrate from the youtube clips i could find, so this will be my next swap for the challenge.

i saw a post here that said that there is a guy here in the usa that is importing the subaru diesels for swaps......dont remember details and cant verify...but

a sleeper FI scoob diesel in an old L or a forester or something stupid like that would be if it could be tuned and had a wide enough rev range....and iirc i read that they do have a pretty high redline for an oil burner

the only thing about that 335d was that, IIRC, it had run flat tires and rode a bit hard....and that was why he sold it.....he was buying rear tires every 5k miles and they were $$$....he had a rear lsd put in it or did something to the stock one and it would leave 2 strips of rubber pretty much as long as you wanted to keep your foot down.....like up to and over 100mph

and...getting 32-33mpg--and he drives his cars HARD... with THAT kind of power and no real reliability worries???
hell yeah
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Old 08-22-2013, 03:51 AM   #32
CarlosVanCasasB
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http://www.ebay.com/itm/Quaife-Subar...71be8b&vxp=mtr

Quaife ATB seems to the most appropiate for me, from the links you gave me, I only see this model, the link above, I don't know if it's R160 or which final end gear ratio is needed Gonna investigate, I'm not interested in the clutch type pack, I'll definetely crash with that Too hardcore, the second option is the viscous LSD, but looking at cons and pros I think Quaiffe is cheaper to maintain and works better
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Old 08-22-2013, 04:41 AM   #33
CarlosVanCasasB
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The Quaife limited slip diff model QHD2Y is R160

But it's for a Subaru Impreza/Legacy 1993-2000 non sti, I know my final end gear ratio (3.90) don't know about the Subarus between 1993-2000 Have to investigate more
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Old 08-22-2013, 04:46 AM   #34
CarlosVanCasasB
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The Subaru Impreza 2.2L has a final gear ratio of 3.90 according to the gear ratio thread here but the 2.5RS has a 4.11 gear ratio :S
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Old 08-22-2013, 04:56 AM   #35
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Awaiting an answer from Quaife HQ...zzz!!! If anybody can shed some more light on the final gear ratio of an Impreza between 1993-2000, I'd be more than happy
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Old 08-22-2013, 07:06 AM   #36
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Quote:
Originally Posted by CarlosVanCasasB View Post
The Subaru Impreza 2.2L has a final gear ratio of 3.90 according to the gear ratio thread here but the 2.5RS has a 4.11 gear ratio :S
This. Its 3.9 in an l or lx impreza. Forester and 2.5rs got 4.11's. 4.44 exists in a jdm version, but 3.9 was what most usdm cars got
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Old 08-22-2013, 07:32 AM   #37
CarlosVanCasasB
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This. Its 3.9 in an l or lx impreza. Forester and 2.5rs got 4.11's. 4.44 exists in a jdm version, but 3.9 was what most usdm cars got
OK! Thanks, There ís also a Quaife front diff slip

Model: QDH1Y
Quaife Subaru Impreza/Legacy (front)(1993-2000) LSD ATB Differential

Is it worth getting as well?

How will the car's reactions differ from just having the rear slip diff?

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Old 08-22-2013, 09:29 AM   #38
kheff46
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Quote:
Originally Posted by CarlosVanCasasB View Post

OK! Thanks, There ís also a Quaife front diff slip

Model: QDH1Y
Quaife Subaru Impreza/Legacy (front)(1993-2000) LSD ATB Differential

Is it worth getting as well?

How will the car's reactions differ from just having the rear slip diff?

I've never driven one equipped with that diff to be honest. Not sure how it affects handling/bias compared to stock
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