LSD Weistec or Harrop
11-05-2019, 08:10 AM
#1
LSD Weistec or Harrop
I am currently planing to put a lsd on my 507. I think most of the people installed the Weistec. But Harrop Engineering seems like another good option to go with. as l am live in Melbourne and Harrop is Melbourne based manufacture. can anyone give me some opinion? anyone heard about Harrop or installed it already? thanks
11-05-2019, 08:37 AM
#2
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Built 2008 G55 & one big 80 Series LandCruiser !
I had a harrop in an 80 series landcruiser - nicely done unit not sure on pricing relative to other options
for my 507 I went wavetrac and am pleased - it's a bit cheaper then some but seems robust enough and functions smoothly.
E
for my 507 I went wavetrac and am pleased - it's a bit cheaper then some but seems robust enough and functions smoothly.
E
11-05-2019, 09:27 AM
#4
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Built 2008 G55 & one big 80 Series LandCruiser !
I found it on amazon for 925 I think - it's a shared part number with some of the Chrysler stuff... here's the current link from a quick search...
11-05-2019, 09:35 AM
#5
wow, the shipping cost to Australia is around 500 usd. lol
probably because Chrysler has a history with MB? I remember the Jeep Grand Cherokee has the same platform with old ML? maybe the old stuff are same story
probably because Chrysler has a history with MB? I remember the Jeep Grand Cherokee has the same platform with old ML? maybe the old stuff are same story
11-05-2019, 01:12 PM
#6
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2007 Mercedes E63 AMG
http://www.drexler-motorsport.com.au/products.html
might be your lowest cost option maybe? i believe it may have been mentioned that Drexler produces AMG and Black Series LSD's. Wiestec is a rebranded Wavetrac? then you have Quaife out of the UK as well. Harrop is an Eaton based unit so should perform similarly to the Quaife. depending on application and usage one would be favored over the other. Drexler looks to be a tried and true clutch style LSD which allows for lots of adjustability. Clutch style LSD's tend to be more aggressive in nature, but perform heeps better than any gear/helical type LSD due to the ability for adjustability in terms of lockup, engagement angle, and characteristics.
https://www.m3post.com/forums/showthread.php?t=788992
might be your lowest cost option maybe? i believe it may have been mentioned that Drexler produces AMG and Black Series LSD's. Wiestec is a rebranded Wavetrac? then you have Quaife out of the UK as well. Harrop is an Eaton based unit so should perform similarly to the Quaife. depending on application and usage one would be favored over the other. Drexler looks to be a tried and true clutch style LSD which allows for lots of adjustability. Clutch style LSD's tend to be more aggressive in nature, but perform heeps better than any gear/helical type LSD due to the ability for adjustability in terms of lockup, engagement angle, and characteristics.
https://www.m3post.com/forums/showthread.php?t=788992
Last edited by hachiroku; 11-05-2019 at 01:18 PM.
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11-05-2019, 05:56 PM
#8
11-06-2019, 03:21 AM
#10
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The Harrop uses Eaton internals - it is a Truetrac. It works well providing there is some load on both wheels. If one wheel is lifted, there is no pre-load & it works like an open diff. Harrop make the carrier to suit various applications that Eaton do not provide for (I know this as I was GM & Technical Director of Harrop for over a decade).
The Wavetrac works on the same principle but has a pre-load system.
I have used owned both, and also a Drexler.
I have a Wavetrac in my ride.
The Wavetrac works on the same principle but has a pre-load system.
I have used owned both, and also a Drexler.
I have a Wavetrac in my ride.
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JOHN_YH (11-06-2019)
11-06-2019, 04:36 AM
#13
by the way, if putting a lsd, is it gonna affect the factory warranty as my car still has CPO warranty covered? and do u know the wavetrac is 1way or 2way or 1.5way, and what about Harrop?
11-06-2019, 01:29 PM
#15
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2007 Mercedes E63 AMG
with any clutch style, you'll want to monitor fluids for metal shavings. metal shavings in your oil is normal as the clutch packs wear on themselves. i personally do not rebuild a clutch style LSD until the function has been drastically affected.
wavetrac is your next best bet to a clutch style since it does have a preload to prevent full 100% open wheel. also, wavetrack and any gear type of that nature will be very durable for all of your high torque needs.
11-06-2019, 05:27 PM
#16
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2010 C63
Wavetrac - imported my own to Aus and had it fitted locally.
Harrop was not out when I did mine. I would have considered Harrop as an option but not at the mega price they are asking.
Wavetrac = best mod to my car.
Harrop was not out when I did mine. I would have considered Harrop as an option but not at the mega price they are asking.
Wavetrac = best mod to my car.
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Cwagon (11-06-2019)
11-06-2019, 07:38 PM
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2013 W204 C63 AMG P31 Estate wagon
Just after I bought my car I was going to get both the diff and trans serviced even the service book said they had been done.
I decided to put in a Wavetrac during the service (also looked at the Quaife) after having one in my old VZ Senator for about 5 years with never a problem.
One thing I really liked about the Wavetrac was that even if one wheel is on a slippery service or even suspended in the air as when negotiating a steep driveway at an angle the other wheel still drives.
11-06-2019, 09:22 PM
#18
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Has anyone tried a roller test with their wavetrac?
I've had mine since 2012, no issues what so ever but I don't think the off the shelf "wavetrac" device generates much friction. In a near zero load scenario (one wheel on smooth ice) it pretty much acts like any other helical lsd.
I believe you can upgrade the plates to a higher friction coefficient though.
I've had mine since 2012, no issues what so ever but I don't think the off the shelf "wavetrac" device generates much friction. In a near zero load scenario (one wheel on smooth ice) it pretty much acts like any other helical lsd.
I believe you can upgrade the plates to a higher friction coefficient though.
11-06-2019, 09:59 PM
#19
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2013 W204 C63 AMG P31 Estate wagon
Not with this car but with my old car I had the wheel in the air scenario and the original old worn out Holden LSD would not give me any drive in the end.
I have a steep approach driveway which i had to attack at an angle because of low spoiler, not so much with this car at std height
Any I was sometimes able to get enough traction to move but usually had to pack wood under suspended wheel.
This got me reading about what was available at the time.
After fitting the Wavetrac I never had the problem again.
I have a steep approach driveway which i had to attack at an angle because of low spoiler, not so much with this car at std height
Any I was sometimes able to get enough traction to move but usually had to pack wood under suspended wheel.
This got me reading about what was available at the time.
After fitting the Wavetrac I never had the problem again.
11-07-2019, 07:34 AM
#20
how much did u spend on the parts and installation for wavetrac? any shop recommended in Melbourne? I checked Weistec websites, there are only two official dealers in Melbourne, Euromotorsports and dyne performance, which one is more professional?
11-07-2019, 02:40 PM
#21
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2007 Mercedes E63 AMG
Has anyone tried a roller test with their wavetrac?
I've had mine since 2012, no issues what so ever but I don't think the off the shelf "wavetrac" device generates much friction. In a near zero load scenario (one wheel on smooth ice) it pretty much acts like any other helical lsd.
I believe you can upgrade the plates to a higher friction coefficient though.
I've had mine since 2012, no issues what so ever but I don't think the off the shelf "wavetrac" device generates much friction. In a near zero load scenario (one wheel on smooth ice) it pretty much acts like any other helical lsd.
I believe you can upgrade the plates to a higher friction coefficient though.
The Wavetrac® diff’s behavior can be altered in the field to suit your needs. It comes standard with carbon-fiber bias plates for the best all around performance and lifetime durability. Changeable plates using materials with different friction coefficients to fine-tune the bias ratio are sold separately.
These bias plates provide a mechanism to tune the response of the differential as a function of applied torque load. The applied torque load manifests itself as an axial load from the differential pinions into the housing. This axial force is then considered a normal force into the bias plate, and as a function of the effective coefficient of friction, provide a resistive torque to the rotational motion of the differential pinions. The resistive torque will add to the resistance of relative rotation of all components within the differential. The resistive force, however, is non-uniform since it is a function of the axial load from the differential pinions. The unbalance of the resistive torque will manifest as non-uniform energy absorption within the differential causing a bias ratio.
These bias plates provide a mechanism to tune the response of the differential as a function of applied torque load. The applied torque load manifests itself as an axial load from the differential pinions into the housing. This axial force is then considered a normal force into the bias plate, and as a function of the effective coefficient of friction, provide a resistive torque to the rotational motion of the differential pinions. The resistive torque will add to the resistance of relative rotation of all components within the differential. The resistive force, however, is non-uniform since it is a function of the axial load from the differential pinions. The unbalance of the resistive torque will manifest as non-uniform energy absorption within the differential causing a bias ratio.
Last edited by hachiroku; 11-07-2019 at 02:42 PM.
11-07-2019, 03:15 PM
#22
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2013 W204 C63 AMG P31 Estate wagon
I bought mine from U.S. early last year for around US$12-1300 delivered and had my local transmission shop install it when I had the trans serviced.
11-07-2019, 03:17 PM
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2013 W204 C63 AMG P31 Estate wagon
11-07-2019, 05:43 PM
#24
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2010 C63
US$1200 shipped to Melbourne years ago.
Install locally was 6 hours - Au$792.00. The MB specialist installer I used has since closed.
Whilst you want someone competent at diff work, the complexity of the C63 rear end is where the the benefit of a specialist MB workshop comes in. By all accounts pulling the rear apart is far from your average drop the rear end so familiarity will ensure a quicker job without issues.
The Wavetrac may need a small bit of the housing ground off - as I understand it, anyone with half a brain and a grinder could deal with that aspect.
You need to find yourself a good independent MB specialist service agent for ongoing servicing. They would be a good place to start in getting a fitting quote.
