4wd thunk when spinning

[Black798]

Well its back again. I had a thread on this a few months back but was never able to solve the problem. Here's what I have, only when in 4wd and spinning under load there is a very prominent thunk or pop that can be heard and felt, it seems to be in the front but I'm not totally sure. The cv shafts are good. The u joints front and rear are tight and lubed along with the slip yokes. The front diff mounts are good and tight.

I'm now thinking that it might be the trans mount because it has some cracking and seems to move around pretty easy, but I wanted to get some other opinions first and see if anyone knows of a heavy duty mount for the auto trans. I know 4xinnovations has one for the manual but I haven't seen one for the auto. If I cant find a heavy duty mount I may look into making a custom one but time is short right now so Id like to find one that I can buy.

You can hear the noise in these two videos.
https://youtu.be/853yQv8jav0

https://youtu.be/QLcPGldJVy4

 

[Black798]

Anyone? I'm thinking of possibly modifying the 4x innovations heavy duty transfer case mount or possibly their manual trans mount

 

[Black798]

bump

 

[RogueYota]

I'm willing to bet it's the tranny mount. I don't know if any aftermarket poly options though.

 

[Black798]

Well after looking around for a few days I dont think that anyone offers a heavy duty or poly transmission mount for the auto. What Im looking at now is making one similar to the 4xinnovations heavy duty manual trans mount. Im thinking that I will have a design worked out by the end of next week and a initial design built by the first of the new year. Ill post up the pictures of the design once I get it finished. Depending on interest I think that I could make them for around 90$ plus shipping. Let me know what your guys thoughts and interest is in this.