Replacing Catalytic Converter

[lee9144]

I have a 1997 Expedition XLT 4x4 and Catalytic Converter on the drivers side is bad. What I need help with is if I cut it out can I use exhaust clamps and pipe adapters when I put the new one in. Thanks for the help and advice

 

[toms89]

http://www.jegs.com/i/Flowmaster/389/2020014/10002/-1

http://www.amazon.com/Flowmaster-2020014-Outlet-Catalytic-Converter/dp/B00BQ9UWMA


I would recommend having it welded in to guarantee its leak free.

 

[jbanks]

I suppose you could cut it out and use adapters and clamps. You might rent the 'pipe expander' from the auto parts store so you expand the pipes but I think it might not work well. I used one when I did mine to re-expand the pipe where the clamp had squashed the pipe. It did take forever with the air chisel to get all the old pipe out from under the clamp.

I ended up doing the Walker direct fit replacement.

http://www.summitracing.com/parts/wlk-53273/overview/

I was also able to sell my old cats for scrap and got $70 - SellYourCatsDirect.com - We buy scrap catalytic converters nationwide!

 

[lee9144]

Thanks for the info...Does anyone know the outside diameter of the pipe on the front Catalytic Converter

 

[Mediamonkey11]

2.25" IIRC.

If it were me I'd cut the two cats out and weld pipes in, it's what I did and love it!

 

[lee9144]

Straight pipe it in other words

 

[Mediamonkey11]

Only on the rear (large) cats, yes. Won't set off a CEL. Only issue would be if your state has emissions testing where they actually put a sniffer in the tailpipe, here they just plug into the OBD2 Port to checks to see if the computer is happy.

 

[lee9144]

OK...and no testing