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edwardOffline
Post subject: cool aftermarket Audi 016 clutch type diff  PostPosted: Oct 23, 2011 - 06:04 AM
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http://www.quaife.co.uk/shop/products/qdf4q-1
http://www.mts-motorsport.com/Clutch-type-diff-Audi-Quattro-016/093-transmission
how do you think this will work with a 4.0 v8?
Is this a good item? Is there a better alternative?
if so what does it compare to?


I heard you can use a limited slip from a Porsche 944
will this fit? in theory? Looks like it, I think this is the same item.
http://www.performanceracinggroup.biz/servlet/the-778/Porsche-944-Quaife-ATB/Detail

and I found this, written by Jim Dinner, on another forum,
Jim, I hope you don't mind me spreading your wisdom. Smile

"[the bolt on side cover just supports the right side bearing cup while the left
side of the case carries the heavy load under torque.

Here is my experience in order of weakness;
1 - Cast iron lip at rear pinion bearing would break out.
2 - 1.250" dia axles would break after the plate was installed.
3 - Spider gears inside differential would break after the axles were strengthened.
I have replaced the spider gears 6 times now and it is possible to do without removing the transmission.
I installed a rear hatch hydraulic lift cylinder from a Honda onto the clutch fork via a ball joint.
I had to drill the case and thread the clutch fork to do this.

The lift cylinder makes the clutch harder to push but it engages SLOWER.
This will reduce the sudden shock to the driveline.
If a normal person were to drive the car it would be tough as nails.]"

credit source Jdinner
 
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EAMartinOffline
Post subject:   PostPosted: Oct 23, 2011 - 07:06 PM
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The 944 differential will fit the 016 and will give you 4 spider gears rather than the 2 that the stock 016 has. Doing that and installing the reinforcing plate will make the 016 a pretty good transmission.
 
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edwardOffline
Post subject:   PostPosted: Oct 23, 2011 - 10:49 PM
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when i first posted my questions about the audi 016 i didnt know much about it.
Ive done quite a bit of reading and asking about.

I think im going to be very happy with the 016.
I dont do burnouts and such anyways

what do you think of this product with a lexus 4.0 v8 with headers as the motor,
so about 300 hp, 300 tq
http://www.quaife.co.uk/shop/products/qdf4q-1
or will the stock 944 perform better
 
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EAMartinOffline
Post subject:   PostPosted: Oct 23, 2011 - 11:57 PM
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The Quaife might be "better" but I would check the price before deciding. I bet you can find a 944 cheaper.
 
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edwardOffline
Post subject:   PostPosted: Oct 24, 2011 - 02:31 AM
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I won't cry no more,
I'm actually over budget because I am keeping the Audi 016 trans
so I dont mind splurging on a few trick parts. I don't know much about
transmissions so I don't know if there are gear ratios or something in the Porsche that will be more street-able.
If there are gear ratios in a LSD, if I claim to be a wiseman, surely I don't know.
 
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EAMartinOffline
Post subject:   PostPosted: Oct 24, 2011 - 03:32 AM
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Changing the differential to a limited slip will not affect the gear ratios. The 01E or the Cayman transmissions will have better gear ratios for a V8. If you already have the 016 and want to use it by all means go ahead.
 
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edwardOffline
Post subject:   PostPosted: Oct 24, 2011 - 05:13 AM
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the shifter is a 5 speed, so the 01e is off the table.
I understand a Euro version of the 01e is a 5 speed but the shift pattern is fugly imo and not compatible with the car design.

I asked around on the gt40 forum and they seem to use the 016
often and have few issues once the upgrades are made.
 
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EAMartinOffline
Post subject:   PostPosted: Oct 24, 2011 - 03:10 PM
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What shifter are you using? If it is the Fiero it will work with a 6-speed.
 
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edwardOffline
Post subject:   PostPosted: Oct 24, 2011 - 08:03 PM
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technically I havent even taken possession of the car until November.
It's gotta get transported and such.
but I will soon. I'm just figuring out a game plan and a budget.

Currently there is a 016 audi trans with a 5 speed fabricated linkage shifter that works very well instead of a cable shifter.

so keeping the shifter would be ideal.
the 016 will probably work, but I want to get my hands a little greasy
and do some mods, lets be honest, just for the sake of modding.

I'm thinking hard of doing a swap with the 01e 5 speed. RCR has some for sale at a reasonable price.
I'll probably get 2, keep one as a spare in storage since they are rare.
My budget for a transmission was about $9k. So I have plenty left over to pay a fabricator to do the swap.

these guys are amazingly talented http://www.bigheadcars.com/ and they are right around the corner from me.
So the swap would be in good hands since there is some chassis mod involved.

The brand new 0 mile 01e 5 spd transmission direct from audi is only about $2000. Used low mileage for 1500.
I'm sure it would be less than $5000 in labor to do the swap, lol
so that gives me extra cash for a LSD and some goodies.

So I see the 5-spd 01e as a top candidate for a modification
otherwise I'm keeping it as is.
 
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EAMartinOffline
Post subject:   PostPosted: Oct 25, 2011 - 04:54 AM
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Sounds like a good plan. Let me know if you need an adapter for that Lexus engine.
 
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edwardOffline
Post subject:   PostPosted: Oct 25, 2011 - 07:38 AM
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I will need an adapter kit, flywheel clutch all that.

I want a lightweight flywheel for fast throttle response.

I dont know much about flywheels, lightweight is good throttle response,
but what does it sacrifice?
in the auto world there is usually give and take.
Does the motor stall easily with a ultra-lightweight flywheel?

I wont know what im going to do as far as the drive-train until my mechanic looks at the car himself.
keep the 016, swap it for a 5spd 01e, other? idk,

I'll send you a pm when im ready to figure out an adapter.
having an adapter i can order form the usa, and not aus is very nice indeed.
 
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AdrianBurtonOffline
Post subject:   PostPosted: Oct 26, 2011 - 12:22 AM
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The lighter flywheel doesnt have as much energy in it so it will cause the engine to stall more easily. This will require that you slide the clutch to get moving

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edwardOffline
Post subject:   PostPosted: Oct 26, 2011 - 12:55 AM
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ah, so light but not ultra light. I made the mistake of putting race parts in a street car a few times.
I should have learned by now.

What do you think is a good weight for a lightweight-flywheel without stalling problems?
without sacrificing throttle response.



Lexus 4.0 V8 to Audi 016 trans
 
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EAMartinOffline
Post subject:   PostPosted: Oct 26, 2011 - 03:52 AM
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It isn't necessarily the overall weight of the flywheel that makes the difference rather it is the inertia weight that matters. If the weight is concentrated near the center there will be less inertia then if the weight is more to the outside. As far as I can find out there were no manual transmissions used with the Lexus V8 so there isn't a stock flywheel to measure. Since the flywheel will be fairly small the inertia won't be all that much as the weight will be mostly toward the center.
 
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AdrianBurtonOffline
Post subject:   PostPosted: Oct 26, 2011 - 04:49 PM
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I would go for around 18-20#

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