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Author Topic: Torsen diff.  (Read 2248 times)
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Location: NW. Ga. Adairsville
Posts: 19

« on: April 22, 2013, 02:33:30 PM »

 Is anyone using a Torsen diff.

 Has this been discussed before?

 I think Tommy Thompson was using one in the Mustang he waded.


           J Y/B
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Age: 68
Location: Near Furley and Kechi KS
Posts: 7208

Robert W. P. "Stainless" Steele Wichita, Kansas

« Reply #1 on: April 22, 2013, 02:46:14 PM »

PM Sparky, I think he is up to speed on them.... pun intended  grin

edit added.  Try the search function they have been discussed
« Last Edit: April 22, 2013, 02:49:27 PM by Stainless1 » Logged

Red Hat 228.039, 2001, 65ci, MSA Bockscar Lakester with a little N20 
MSA Bockscar Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
kiwi belly tank
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Location: Lava Hot Springs Idaho
Posts: 2530

« Reply #2 on: April 22, 2013, 04:55:12 PM »

Strong units with spiral gears & no cross pin to break. The drive load to the axles is spread accross the gears to the carrier. Limited slip is via the resistance of the gears themselves.
Toyota, Mazda, Ford & 7.5 10 bolt GM.
If you can run one, do it.
New folks

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Age: 32
Location: Medicine Hat, AB Canada
Posts: 25

« Reply #3 on: April 22, 2013, 05:48:21 PM »

Torsen diffs apply more torque to the wheel that is not slipping. I would think this concept would force the slipping wheel to equalize rotational speed with the non-slipping wheel at high speed on the salt. So it should be the way to go in theory, but I have never driven on the salt, so experience is what will tell the real story.

I will say that they work phenomenally on a Formula car, though!  cheers


Dr Goggles
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Location: Melbourne Australia
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The Jarman-Stewart "Spirit of Sunshine" Bellytank


« Reply #4 on: April 22, 2013, 06:54:54 PM »

Sparky wrote the gospel according to Torsen, I am a disciple. Now with them, he has performed miracles, we turned a few minor tricks.... The big get with them is the r&p sets, you can get ratios down to 2.14 with the 10 bolts. As Tristan said the theory is very good.... if the resistance on one axle decreases torque is fed to the other. This would seem to be a far more intelligent way to manage than grabbing the other axle solid if a wheel slips...

We don't really have enough power to delve into the realm of constant wheel slip and we also have a pretty clean shape, but I'm here to say it's done us some good.

Having said that our third member/rear end has mixed heritage, torsen centre, Camaro style housing, Ford tubes and axles..........

On top of all that the 10 bolt has the highest pinion to crownwheel height= least mechanical losses. Win/win !

Few understand what I'm trying to do but they vastly outnumber those who understand why...................

Current Australian E/GL record holder at 215.041mph

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Age: 70
Location: Phoenix AZ
Posts: 169


« Reply #5 on: April 27, 2013, 07:32:22 PM »

Sparky has been preaching to me about Torsons since I met him 2 years ago. I don't doubt they are the sh--, but we been using a 10 bolt with a spool so far(simplicity) and we got a hat, so we will keep on truckin til we run out of speed increases and then we'll revisit the Torson deal. Sparky keeps us goin'( but it's his fault we're wastin' our time and money on this in the first place) cheesy

BC Racing 1979 Z-28
AA/CBGC Record 251.802 Speed Week 2012
AA/CBGALT Record 255.382 Speed Week 2013
AA/CBGC Record 226.104 El Mirage Sept 2015
AA/CBFALT Record 227.954 El Mirage June 2016
AA/CBGC Record 267.878 Speed Week 2018
AA/CBGALT Record 236.458 El Mirage Nov 2016
It's a lot of work to have fun...
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« Reply #6 on: April 27, 2013, 10:21:15 PM »

lol  grin

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