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Cant do donuts turning right?

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Cant do donuts turning right? - 5/7/2008 7:43:59 PM   
Andy13186


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I found out that i cant make the back slide out turning right... only left.. Is this normal or is my differential messed up?

When i turn left and floor it i can fishtail easily, turning right and flooring it and i think only 1 wheel spins or something and the back dosnt slide out...
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RE: Cant do donuts turning right? - 5/7/2008 9:50:51 PM   
m260gt

 

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somethings wrong. my tail goes out both ways.

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RE: Cant do donuts turning right? - 5/8/2008 12:48:37 AM   
MU71L4710N

 

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do a short brake stand and see if you have 1 or 2 burn marks on the ground.

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RE: Cant do donuts turning right? - 5/8/2008 6:52:46 AM   
1990NOS!

 

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no posi unit... prolly... a limited slip--- my car used to do that.

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RE: Cant do donuts turning right? - 5/8/2008 12:43:08 PM   
Andy13186


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quote:

ORIGINAL: 1990NOS!

no posi unit... prolly... a limited slip--- my car used to do that.


my is a 2003 gt, was that one of the options?

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RE: Cant do donuts turning right? - 5/8/2008 12:51:32 PM   
Derf00

 

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quote:

ORIGINAL: 1990NOS!

no posi unit... prolly... a limited slip--- my car used to do that.




Posi and Limited slip are the same thing. Open differential is one-wheel power.

A 99-08 GT has posi/limited so both wheels should spin unless he's burned the clutches out in the unit.

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RE: Cant do donuts turning right? - 5/8/2008 5:16:05 PM   
Andy13186


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tried again and failed =(  this sucks   ... i think my back left tire isnt burning out... just my back right one possibly

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RE: Cant do donuts turning right? - 5/8/2008 9:25:20 PM   
ronsfun96gt

 

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sound like you got a "open" rearend. In which case only one wheel spins most of the time

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RE: Cant do donuts turning right? - 5/8/2008 10:51:59 PM   
Andy13186


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Heres a pic from under the car,  Does the differential look stock? http://carad.ebayimg.com/i16/06/a/000/78/44/b5fb_4.JPG


also would this fix it? http://store.summitracing.com/partdetail.asp?part=FMS%2DM%2D4204%2DF318C&view=1&N=700+150+400070+307506+

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RE: Cant do donuts turning right? - 5/8/2008 11:08:25 PM   
35thAnni99GT


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Can't tell unless you take diff cover off, there bud.

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RE: Cant do donuts turning right? - 5/8/2008 11:11:27 PM   
Andy13186


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quote:

ORIGINAL: 35thAnni99GT

Can't tell unless you take diff cover off, there bud.



http://www.miracerros.com/mustang/axle.htm this link says theres differences between covers of the open differentials of v6's and the 8.8's

or could you put an open in an 8.8 anyway?

< Message edited by Andy13186 -- 5/8/2008 11:13:39 PM >

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RE: Cant do donuts turning right? - 5/8/2008 11:47:34 PM   
MustangMan628

 

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quote:

ORIGINAL: Andy13186

tried again and failed =(  this sucks   ... i think my back left tire isnt burning out... just my back right one possibly


Then there is a good chance you don't have a locking differential. Posi, Limited Slip, Ford Trac Loc, They are all pretty much the same unless it has been repaired or replaced. It means that both tires spin instead of one if you have a "posi" rear.


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RE: Cant do donuts turning right? - 5/9/2008 6:15:50 AM   
Jfsram

 

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If you have a GT, you have a TrakLok. Most likely yours is worn out and needs new clutches.
The 8.8 TrakLok is weak even when freshly rebuilt.

Why right and not left. Torque of the driveshaft tends to pick up the right wheel and plant the left. So even a weak clutch set up will easily spin both tires during a left turn. Even the some open rears can do this. A right turn requires a very tight set up because you need ALOT OF STRENGTH in the locking mechanism to overcome both the weight transfer of the vehicle during the right turn and the added traction you gain from the axle torquing the left wheel into the ground.

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RE: Cant do donuts turning right? - 5/9/2008 6:19:57 AM   
1990NOS!

 

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quote:

ORIGINAL: Derf00



Posi and Limited slip are the same thing. Open differential is one-wheel power.

A 99-08 GT has posi/limited so both wheels should spin unless he's burned the clutches out in the unit.



Thats what it is... thanks for clearing that up, i know i didn't keep it that way long though. Hated it... 

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RE: Cant do donuts turning right? - 5/9/2008 5:28:49 PM   
Andy13186


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Joined: 4/10/2008
Status: online
quote:

ORIGINAL: Jfsram

If you have a GT, you have a TrakLok. Most likely yours is worn out and needs new clutches.
The 8.8 TrakLok is weak even when freshly rebuilt.

Why right and not left. Torque of the driveshaft tends to pick up the right wheel and plant the left. So even a weak clutch set up will easily spin both tires during a left turn. Even the some open rears can do this. A right turn requires a very tight set up because you need ALOT OF STRENGTH in the locking mechanism to overcome both the weight transfer of the vehicle during the right turn and the added traction you gain from the axle torquing the left wheel into the ground.


Thanks, this seems correct.  Do you have any idea how much it would be to get it repaired? I might just leave it if its expensive, ill just ... not do donuts turning right... lol

Would this affect straight line performance?  it dosnt seem like it to me...  i think when im going straight both wheels spin. I will find out and report back


< Message edited by Andy13186 -- 5/9/2008 5:30:01 PM >

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