Front Dif question

lucas · Post by **lucas** » Tue Dec 15, 2009 7:36 pm

does anyone know some of the symptoms of a failing front diff. I think mines going out but im not sure its hard to tell. Acts like a busted axle round corners but with more vibrations. But it cant be cause at idle if you rev the motor you get the same nasty vibration.

Lunatech · Post by **Lunatech** » Tue Dec 15, 2009 8:04 pm

I think it is more than likely the center diff causing it to bind and tweaking the engine/trans causing the exhaust to tweak and open at some point. This is what happened to me and it eventually stripped the splines off my passenger side front axle and broke my mounts before I figured out what it was. After the mounts broke it would get bound and stay bound also made it hard to shift, idle rough and run hot sometimes. IDK why maybe pinching coolant hoses. If I were to put it in revers and lunge it with the wheels cranked one way or the other it would unbind and drive normal till I turned too sharp again.

FWIW: this is only applicable if you're talking about an AWD vehicle

Post by **Legacy777** » Tue Dec 15, 2009 8:15 pm

AT or MT?

lucas · Post by **lucas** » Tue Dec 15, 2009 9:20 pm

its a legacy ss 5mt, and i just put new motor mounts and tranny mount on. Any ideas?

Post by **Legacy777** » Wed Dec 16, 2009 7:11 pm

I would suspect the center diff as well.

lucas · Post by **lucas** » Wed Dec 16, 2009 11:53 pm

balls, anyone gotta spare tranny they wanna trade.

lucas · Post by **lucas** » Wed Dec 16, 2009 11:57 pm

i guess my next question would be will a N/A 5mt work in place of a turbo 5mt

mike-tracy · Post by **mike-tracy** » Thu Dec 17, 2009 12:27 am

Sure it will, you'll have to use a rear diff that matches the new tranny.

lucas · Post by **lucas** » Thu Dec 17, 2009 12:35 am

how come the old dif wont work?

fishbone79 · Post by **fishbone79** » Thu Dec 17, 2009 1:11 am

turbo is 3.90, NA is 4.11

lucas · Post by **lucas** » Thu Dec 17, 2009 7:30 am

would 4.11 gearing be better?

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Front Dif question

Front Dif question