CAT removal question
Thread Starter
Drifting
Joined: May 2004
Posts: 1,747
Likes: 1
From: Port McNicoll Ontario
CAT removal question
If I remove the Cat from my 87 (replace it with a straight pipe) what do I do with the air tupe that runs into it?
Or, if I gut the cat and reinstall it hollow will this effect the same air tube's function.....What does it do?
Thank you
Also, how do I get this damn cat off? I have it undone and I've been under the car forever pulling twisting and banging. The damn thing won't slide off the front Y.
Or, if I gut the cat and reinstall it hollow will this effect the same air tube's function.....What does it do?
Thank you
Also, how do I get this damn cat off? I have it undone and I've been under the car forever pulling twisting and banging. The damn thing won't slide off the front Y.
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada
It won't come off willingly 
I cut mine off, then I could grind a cut line into the left over piece and remove it.
I got a shop to give me a piece of 3'' pipe and had them expand one end to slide over the inlet pipe.
I then cut off about 4'' of the flanged end of cat. Used the measurements I had taken earlier, and welded the flange end to the straight pipe. Slipped it on front Y and clamped it. Bolted up rear Y and I was done.
I wouldn't worry about the air tube to cat. Tie it out of the way, or completely remove it.
I had a exhaust shop cut out my pre cats and weld in straight pipe.
I cut mine off, then I could grind a cut line into the left over piece and remove it.
I got a shop to give me a piece of 3'' pipe and had them expand one end to slide over the inlet pipe.
I then cut off about 4'' of the flanged end of cat. Used the measurements I had taken earlier, and welded the flange end to the straight pipe. Slipped it on front Y and clamped it. Bolted up rear Y and I was done.
I wouldn't worry about the air tube to cat. Tie it out of the way, or completely remove it.
I had a exhaust shop cut out my pre cats and weld in straight pipe.
Thread Starter
Drifting
Joined: May 2004
Posts: 1,747
Likes: 1
From: Port McNicoll Ontario
I didn't want to cut or grind it in case I needed to use it as a decoy or something later.
I suppose I could get the end fabricated after I cut it like you said agent 86.
Thanks for the tip on capping off the air line.
My car is supposed to have 3 cats but the two front ones seem to be missing. Looks like someone before me started the job that I'm going to finish.
I suppose I could get the end fabricated after I cut it like you said agent 86.
Thanks for the tip on capping off the air line.
My car is supposed to have 3 cats but the two front ones seem to be missing. Looks like someone before me started the job that I'm going to finish.
