catalytic converter orientation

Jan 21, 2007 6 Replies

I bought a new aftermarket catalytic converter for an '85 Dodge B150 and I'm not sure how it fits... there is a little "L" shaped tube that comes off the body. I'm pretty sure it points foreward and on the top once it's installed, but not positive. I haven't found out much from searching the web, either. Welding it in won't be a problem, I just need to know which way it ges in.



Does anyone know for sure?



wrote

Air intake from the smog pump. Did your old converter have one? Is there an air pipe from the pump?

Rockauto has various pics, depending on whether it's a 6 or 8-cyl. None of them show an air inlet, but they all show the converter having a short pipe in front, and a longer pipe behind, angling to the passenger side.

Here's Walker's diagrams:

6-cyl
formatting link
formatting link
And Merit's: 6-cyl
formatting link
formatting link

Thanks for the help!

There is a long tube that used to run to the old cat converter. I think it is an air pump, to blow a little air in so the converter has oxygen to do the job. The "L" tube on the new converter doesn't have any fittings on it to match the air tube running from the engine, so I'll just need to weld on a fitting or something.

I've heard you can run the after-market converters without pumping air into it, but I'd like to hook up the air blower tube anyways.

I ended up mounting the converter so the tube points forward, but is on the bottom so I can add the correct fitting.

Jeff P.

wrote

On my Ford I used a Walker #35574 "AIR tube kit" that comes with a short steel tube and a dual-sized high temperature hose that you cut-to-fit to connect the old pipe to the converter's inlet.

Here's the only pic I could find....

formatting link

Thanks -- I didn't know there was such a thing! I'll go by the nearest NAPA tonight and pick one up.

Do you know anyone else who sells the same thing for less?

On Jan 23, 4:56 am, "MasterBlaster" > > > and I'm not sure how it fits... there is a little "L" shaped tube that

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required