evoracingstar

iTrader: (31)

ahhahahha lmao!

i dont think doing donuts r the best in our evos. putting alot pressure on t case and transmission i would belive. but gl on finding out ur problem man!

Jeff_Jeske

iTrader: (66)

Drain the rear diff fluid.


Also.... are you sure this part of your xfer case is fine?

EVOizmm

iTrader: (10)

^I would think if that’s the part that broke, drivability would be a little more effected. this seems just like the classic case of broken center diff gears.

His symptoms sounds just like the 2 times i broke my center diff gears in my DSM:

Jeff_Jeske

iTrader: (66)

That is the pinion that comes off of the TC Ring Gear has the viscous coupler in it for the torque split front and rear. I had an extra one but sold it not too long ago.

The Ring Gear in the TC is attached to a differential that connects to the front wheels, one through the hollow splined shaft coming from the tranny to get to the driver's side wheel, the other goes out the other side of the TC to power the passenger side wheel. These have tested fine. So.... If its not the rear diff or VC then we have to move to the tranny. The TC ring gear is directly driven by a hollow spline coming out of the Transmission. That hollow spline is connected to the final drive in the tranny.

But we have eliminated the spider gears.... here is a picture of his (POSTED IN LOCAL FORUM):

Nasty Evolution

iTrader: (21)

Yes that part looks perfect. I also grabbed the driveshaft and turned it while making sure the above mentioned gear was turning with the driveshaft. All is well there.

Jeff_Jeske

iTrader: (66)

Good... at least it doesn't look like this:


Have you drained the rear diff?

Jeff_Jeske

iTrader: (66)

Thinking about this a little more I feel the rear diff is suspect. If you killed the shaft to the transfer case you wouldn't get any power to the front wheels either. Since you know the front diff and VCU is good to go the only thing left is the rear diff.

EVOizmm

iTrader: (10)

very well could be a rear diff. I thought you already drained all the fluids Nasty Evolution.

Nasty Evolution

iTrader: (21)

Neg. I didnt' have enough jack stands to get the rear up in the air, since the SRT is on a set also waiting for a new turbo. I'm picking up another set tonight. That and I just ran out of time with removing the front diff, and fixing the dail driver and running around picking up tools and parts.

evoracingstar

iTrader: (31)

wow thats real bad!! looks like u took a grinder to it and beat it up! lol

nitz

iTrader: (3)

i think this guy is on to it here. you checked the spider gears in the open front diff, where he was indicating the spider gears in the center diff. this resides in the transmission bolted to the final gear. mistu is a bit confusing in this regard because the full action of center diff really takes place in two places; the viscous coupling unit, VCU, in the transfer case and the "center diff" in the transmission as mentioned above.

image below is the exploded diagram of the "center diff" inside your transmission. #7,11 is what is most likely broken on yours.

Nasty Evolution

iTrader: (21)

No I have not had the time at all to pull the tranny, but I'm also thinking the center diff gears are what broke also. I drained the rear diff. today and the oil came out dirty but not much for metal shavings and no chunks. No grinding noises from the rear end, if you turn the drive shaft on wheel spins and if you turn the other wheel the drive shaft spins.

the bastard

Holy ****

Toxin

iTrader: (2)

Death whine just got a new meaning after seeing that picture.

Jeff_Jeske

iTrader: (66)

I still don't think its the center diff which is really the final drive. The front diff spiders gears would have given up first.

I would look at the rear diff as many people are blowing them up lately.