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Old 02-20-2004, 11:45 PM
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Location: Johnstown, Pennsylvania
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trap ox ...???

Just sitting here thinking about the teardown coming up. I am going to install a new manifold gasket and o-rings in the turbo soon. While I'm there I was thinking of making the trap ox less restrictive. (more power maybe?) I have never seen the inside of one. Don't even know how I would make it less restrictive other than **** can it and install straight pipe.
Any ideas???? Or should I leave it alone?
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Old 02-21-2004, 12:35 AM
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Your car still has a trap oxidizer? If you're talking about the catalytic device along the exhaust pipe, replace it with a test pipe. A reputable indy told me they don't have an infinite life anyway.

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95 S420
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Old 02-21-2004, 04:25 AM
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My bust , I was talking about the catalyst. What do you mean replace it with a test pipe? I thought the catalysts were wupposed to be a lifetime replacement?
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'85 300SD (formerly california emissions)
'02 Jeep Grand Cherokee Limited
'04 VW Passat W8 (6spd manual) SOLD!!
'68/'69 Empi Imp body on '65 Beetle pan
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'72 Triumph T100R
'70 Yamaha R5 Rat Bike
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  #4  
Old 02-21-2004, 01:41 PM
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Yes they were intended to be lifetime replacements but MB only warranted the replacements for only 12 months/unlimited mileage. You can take take that for what its worth. I've heard of some people fabricating a straight pipe instead of having the oxy cat and I have heard of other people just converting the entire intake/exhaust set up to a 49 states system. Personally I like the 49 states set up because it frees up a lot room under the hood and gives you an extra 5 hp over the CA set up. The straight pipe might do that also but I don't know for sure.
It's your car, it's your choice.
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Old 02-21-2004, 02:43 PM
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Quote:
Originally posted by vwbuge
What do you mean replace it with a test pipe? I thought the catalysts were wupposed to be a lifetime replacement?
Test pipe is a gasser term for a section of pipe that replaces a catalytic converter to check the performance of the car without the catalytic converter in place. It's supposedly for diagnostics purposes only.

A reputable tech in my area says that a plugged up catalyst device is a cause of loss of performance in a 603. I don't know how to check it.

Is this device in the engine bay in a 617? It's near the transmission in an SDL so I have no idea how removing it frees up space in the engine bay.

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87 300SDL
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Old 02-21-2004, 02:50 PM
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Quote:
Originally posted by sixto

Is this device in the engine bay in a 617? It's near the transmission in an SDL so I have no idea how removing it frees up space in the engine bay.

Sixto
95 S420
87 300SDL
Yes it is in the engine bay on a W123 with the 617. It's right under the intake manifold. Without it, it might make getting to the right engine mount and maybe even the starter a little easier in the future.
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