tarzan17

While debugging some odd noises I hear from engine area when shifting to R or D I noticed whenever transmission was engaged, the whole exhaust system moved up. Is this expected behavior? Is this a sign of worn engine mounts or something else?

Here is the video evidence:
https://vimeo.com/66944691

For reference here is exhaust system parts list:
http://www.trademotion.com/parts/199...HAUST%20SYSTEM

salimshah

Check if your dog-bone mount (top of the engine near passenger side) is broken or not.

Mine was broken and it stressed out the WU-CAt (pre-cat) and sheared it off. So dont delay as one thing leads to another.

Salim

tarzan17

Damn. That sucks for you. Will check out the dogbone next chance I get, it's only about a year old so maybe I got a defective one.

salimshah

Your problem (if any) may be different and there is always some margin of movement .. that is why we have rubber mountings and flex pipes. IN my case the exhaust was moving in and out of the bottom of the precat (break was hidden by the heat shield).

Salim

tarzan17

Visual inspection of dogbone does not show any obvious signs of deterioration but I understand that visual inspection may not suffice. Made a video of dogbone during shifting R-N-D and see some movement but maybe this degree of movement is normal.

https://vimeo.com/66966640

tarzan17

Many thanks for your input Salim !

It is hard for the average joe like me to determine what is normal tolerance since most people will never observe the exhaust moving up / down or dogbone during gear shifting.

salimshah

I and my RX are separated from each other for few days .. so some one else please respond based on real time observation.

Salim