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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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

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.

Sixto
95 S420
87 300SDL

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)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R

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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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012

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.

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.

__________________
DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012