Four Different Exhaust Systems
I asked Wouter from South Africa about the exhaust pipe. The (standard AUDI looking) manifold feeds two downpipes, which then go to the rear of the AUDI or the front of the kombi. Everything looks stock up to the point where these two pipes feed into the Y. After that, a single pipe runs to the front of the VW Kombi and does a U-turn into a box hanging approx. under the sliding door. (Of course the sliding door is on the left side of the vehicle). From the box, the return pipe runs parallel to the feed pipe, to a second box next to the engine, and out via the cut-out in the rear panel. Looks pretty easy to weld up, and I would assume that the boxes are chosen for fit, i.e. eyeball the space then select a box from the shelf.
One of the available exhaust systems from the Winkler garage will find its place underneath the left mid-section. It goes straight to this place into the mufflers and the outlet is in front of the rear left wheel. But this system does not include a catalytic converter.
Details: The sport exhaust system is specially built by Winkler. Coming out on the left side of the engin cabinet, running straight forward below the axle, turning left to that place to where the propane tanks of the Westfalia campers are. The muffler is a turn back: rear right side in, rear left side out. The outlet goes into a second, smaller muffler. The outlet of this one ends in front of the left rear wheel. This system is easy to mount and sold as the regular one. No welding is needed. It also retains the high performance of the engine. And it will not effect the protective brush rails of the Syncros.
The second system sold by Winkler uses the first original AUDI exhaust pipe coming out of the left side of the engine combustion chamber going below the axle, turning right and ends in front of the gearbox's support in the centerline of the Vanagon. At this location a turn-back muffler is mounted, rear right side in, rear left side out into a long wound pipe going behind the left rear wheel (above the axle). There is a second, small muffler whose outlet ends below the left tail lights. The turn-back muffler is mounted at a wrong angle to the pipes, and has to be cut and welded once again. This is the only modification necessary. This system costs 6 PS, depends on the length of the downpipe.
Because my vanagon is a camper (and on the left mid-section you will find a 50 liter water reservoir and all Westfalia campers I know have a propane tank at that place), I recommend using the original AUDI exhaust downpipe. On the right side I have a tank for dirty water. I had some problems with the shift rod and the heater/cooling pipes, but now the exhaust system is ready mounted. A lot of plumbing was necessary, but finally it fit into the center of the midsection and the pipe ends on the Vanagons right end.
Details: The exhaust system is built by me and uses all original parts from the AUDI exhaust system. With the exception of the first pipe, all parts have to be modified. My solution uses the original first exhaust downpipe, ending 10 cm in front of the gear box, exactly in the middle of the Vanagon. Going straight into a pre-muffler whose outlet is in the front. Onto it, I welded a 180-degree turn around pipe of 22 cm diameter and this ended in a second pre-muffler. This a simple straight trough and the outlet pipe goes below the right axle. Then I have two 90 degrees turns welded to jump more to the right side to fit the empty space beside the engine. The last main-muffler's outlet pipe ends below the right tail lights. Hopefully this saves the 6 PS I would lose by the second system. And I have the additional option to mount a regular AUDI catalyst in place of the first pre-mufflers.
|Last updated 30.
Apr. 97 by Helmut Zeidler
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