In our case, the source of a clunking noise under high revs on hard pulls
turned out to be the K&N air
 filter.

  With the intake boot acting as a spring, the filter was vibrating like a
bell clapper inside the cavity and bouncing off the bottom.  Instead of a
bell tone, however, it sounded a lot more like a 3 year old beating on a
pot with a wooden spoon.

  After shaking the hell out of everything underneath the deck to figure
out where the heck the noise came from, an easy adjustment took care of it.

Geo/ATL

On Mon, Apr 15, 2013 at 2:06 PM, neil n <musomuso@gmail.com> wrote:

> Hi all.
>
> This for a Jetta engine powered Vanagon.
>
> When driving in 1st or 2nd gear, especially up hill (more load), it
> sounds like the engine/transmission is contacting the body/frame.
> Noise doesn't happen otherwise. I made a video to see if the new
> exhaust was contacting the rear apron. youtube video of van parked in
> driveway, e-brake on, foot on brake, in 1st gear letting clutch out:
>
> http://www.youtube.com/watch?v=IHdLOaw3hww&feature=youtu.be    Video
> also briefly shows van in reverse.
>
> I now suspect that the modified transmission brackets are contacting
> each other when engine is under load. Regardless....
>
> Is the drivetrain movement shown in the video (rear of engine moves
> down, engine torques to driver side) the same as what would happen if
> I  was actually driving the van?
>
> Thanks,
>
> Neil.
>
> --
> Neil n
>
> Blog: tubaneil.blogspot.ca
>
> '88 Westy http://tinyurl.com/c8rlw6p
>
> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>
> Vanagon VAG Gas inline-VR Engine Swap Group:
>
> http://tinyurl.com/d7gd5ej
>