Cat tubing and 6 port actuator
#1
Full Member
![](/images/misc/20_year_icon.png)
Thread Starter
Join Date: Aug 2002
Location: Soggyville
Posts: 144
Likes: 0
Received 0 Likes
on
0 Posts
Cat tubing and 6 port actuator
So I have a question which seems to have multiple answers depending on with whom I speak.
My split air tube has broken off at the main cat.
I need to know, does this affect emissions greatly? Does this affect the 6port actuation in any way? What are the two hoses from the intake going into the check valve then on to the cat for? I assume the larger one is from the air pump, the smaller is...?
TIA,
Confused new used GSL-SE owner
My split air tube has broken off at the main cat.
I need to know, does this affect emissions greatly? Does this affect the 6port actuation in any way? What are the two hoses from the intake going into the check valve then on to the cat for? I assume the larger one is from the air pump, the smaller is...?
TIA,
Confused new used GSL-SE owner
#2
Full Member
![](/images/misc/20_year_icon.png)
iTrader: (2)
Join Date: Jun 2002
Location: Brenham, Texas
Posts: 78
Likes: 0
Received 0 Likes
on
0 Posts
Emissions will be affected "some" since the tube supplies additional air to the cat. If that tube has fallen off, your 5th and 6th ports WILL NOT WORK. These ports are opened by exhaust pressure. One of the hoses carries air to the cat. There is also a smaller one that goes to the acuators. this is what opens the 5th and 6th ports.
#4
Find Racing
![](https://www.rx7club.com/images/misc/10_year_icon.png)
Join Date: May 2001
Location: Seattle, WA
Posts: 1,219
Likes: 0
Received 0 Likes
on
0 Posts
I know that the 5/6 ports won't work without the tubing (like everyone said), but you have some options. You could easily have a new one put on for a few bucks and a little convincing. Or you could hook your 5/6 ports to open with the pressure supplied by the airpump. I was doing this on my 88 for a long time and it worked really well. Not too tough to do either. Unfortunately, without that tube, your emissions will suffer a bit and I'll bet it sounds pretty ***-shitty with the exhaust leak. Maybe it's time for a race-pipe
![Stick Out Tongue](https://www.rx7club.com/images/smilies/tongue.gif)
#5
Full Member
![](/images/misc/20_year_icon.png)
Thread Starter
Join Date: Aug 2002
Location: Soggyville
Posts: 144
Likes: 0
Received 0 Likes
on
0 Posts
Ok, thks for the info. I have to weld a new pipe on, we have emmisions testing here. I still don't see how the ports are not working though. When the intake boot is off, car not running, the ports are open.
#6
Find Racing
![](https://www.rx7club.com/images/misc/10_year_icon.png)
Join Date: May 2001
Location: Seattle, WA
Posts: 1,219
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by mcgarret
Ok, thks for the info. I have to weld a new pipe on, we have emmisions testing here. I still don't see how the ports are not working though. When the intake boot is off, car not running, the ports are open.
Ok, thks for the info. I have to weld a new pipe on, we have emmisions testing here. I still don't see how the ports are not working though. When the intake boot is off, car not running, the ports are open.
If you're sure they're open all the time, try pulling them closed (just work the hinge back and forth). Also, you could un-bolt the actuator (it's just two 10mm nuts) and clean them off the car.
Thread
Thread Starter
Forum
Replies
Last Post
24seven_dada
3rd Generation Specific (1993-2002)
20
11-10-18 12:03 PM