> Tom
>
> i did some research on this type of thing back in the winter when i wanted
> to test a cat on a newer car with out a back pressure test port.  i think
> that is what the port was for.  although it is labeled as a CO test
> port in the manual.  since most exhaust gas analyzers "sniff"
> after the cat they have taken this port out of most cars.  i ended up
> taking the car to the local dealer and they don't even use the exhaust
> gas tester any more.  they had to find the "old" guy in the shop to run
> it for me.  they just us a laptop to read the output from the second
> oxygen sensor on OBD II cars.  one guy that i talked to at a shop said
> that bmw was the last to still put this port on their production cars.
>
> any how in my research i found several kits to put a port in if you wanted
> the port.  the were marketed to exhaust type shops.  the kits included the
> drill and ports, perhaps 10 in a set.  i set out today to find some of
> that info for you but instead turned this up.  it looks like most back
> pressure testers are being made to fit a oxygen sensor bung.
>
> http://www.arizonatools.com/catalog/browse/3586-3631-3348/
>
> if you wanted to install a oxygen senor bung they are readily available
> both on the web and at local muffler shops.  i bought one locally when i
> fabbed my exhaust.  if you are going to do it yourself be sure to get the
> plug that fits in the bung.  this prevents spatter from getting in the
> bung while you are welding and i think helps to keep the bung from
> warping.
>
> jonathan
>
> On Tue, 8 Jun 2004, Tom Young wrote:
>
>> Hi all:
>>
>> The Federal air-cooled crossover pipe I purchased and installed on the
>> Westfalia doesn't have the exhaust gas analyzer bung that the OEM crossover
>> pipe did.  I'd like to install the bung on the aftermarket pipe; is there a
>> source for these things?  As I recall the "bung" is nothing more than a
>> smooth pipe, threaded on the end for a cap.  Could I just fabricate such a
>> thing down at the hardware store?
>>
>> Thanks.
>> ---------------------------------------------------------------
>> Tom Young                       '81 Vanagon
>> Lafayette, CA 94549         '82 Westfalia
>> ---------------------------------------------------------------
>>
>
While we're at it, does anyone know where to get another cap for my exhaust
port?  Little bugger keeps falling off

Cory Sammons
Gardiner, NY
84 Westy
99 New Beetle