2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

6 ports....stuck opened?

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Old Jun 17, 2002 | 10:27 AM
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6 ports....stuck opened?

i realize that my 5/6 ports are stuck...the arms are fully extend...i can only push them back in...at all RPM range...
are they closed or opened??? what could be the problem???? clogged cat ??
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Old Jun 17, 2002 | 10:29 AM
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What do you mean, push tehm back in. The ports twist open/closed, not push pull.
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Old Jun 17, 2002 | 10:33 AM
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the actuators`s arms....what moves back and forth
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Old Jun 17, 2002 | 10:38 AM
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Right. I though you were saying that you pulled on them, and they should only twist left and right. Anyway, a clogged cat can be the problem, but it can also just be random crud. Get a Hayne's manual, and it will tell you the procedure for cleaning them. Basiclly, pull the manifolds, and start cleaning!!
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Old Jun 17, 2002 | 10:51 AM
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the engine has 60 miles on it....i dont think they dirty...
all i want to know is how does an opened actuator looks like...extended or not...cuz if my cats are clogged....there`d be constant pressure to keep them opened....
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Old Jun 17, 2002 | 10:58 AM
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Well, the rear one will point back, and the front one will point forward when opened all the time. Could very well be a clogged cat if the engine is new.
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Old Jun 17, 2002 | 11:05 AM
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the pin on the actuator is supposed to be in or out when opened
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Old Jun 17, 2002 | 11:07 AM
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Out. Pressure pushes it out. Man, I am sorry for being retarded. You were asking about the actuators the whole time, and I was thinking about the sleeves themselves. Sorry man. Damn I am retarded!!!
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Old Jun 17, 2002 | 11:51 AM
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hehe its okay to be different!!!

so they're open.....****.....what does it mean.....clogged cat?
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Old Jun 17, 2002 | 11:54 AM
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Well, hmmm. Good chance it could be cats. Check that out, and see. I can't think of a reason why they would be open all the time. If there was a vac leak or something, then I could see them staying closed, but not open. No clue bro.
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Old Jun 17, 2002 | 12:05 PM
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Are they closed when the car is off? They may just be jammed. If someone watches them as you start the car, and they open right away, then there most likley is some sort of clog in your exhaust.
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Old Jun 17, 2002 | 12:10 PM
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They are closed till 3850 RPM (if memory serves me correctly). They open as backpressure from the cat builds. If there is too much back pressure, then that would induce them being open all the time. Now if they are open when the car is off. Than that is a whole new set of problems/reasons.
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Old Jun 17, 2002 | 12:25 PM
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I'll try to soak them into wd40 or something this week-end....I'll also check to see if they close when the car is shut down.....its not much of an issue right now as the car is not running.....what is an issue is the clogged cat....i have to pass smog in 2 weeks and i dont feel like buying another cat...and cant go straight pipe.....gutting it???
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Old Jun 17, 2002 | 12:26 PM
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You will never pass smog w/o a cat.
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Old Jun 17, 2002 | 12:37 PM
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get a used one for the day then go straight pipe?
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Old Jun 17, 2002 | 12:39 PM
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Good idea. However, the ports will no longer work w/o a cat (considering they don't do that now). Personally, I have wired open my ports, and will soon be pulling the manifolds to port em, and will be removing the sleeves permanantly. Nice top end feel, slight loss in low end torque.
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Old Jun 17, 2002 | 01:13 PM
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lets say i take them off and pressure wash them with degreaser and all the chemicals i can find....carb cleaner...brake cleaner....paint thinner... what are my chances ???
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Old Jun 17, 2002 | 01:23 PM
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Can't hurt!!
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Old Jun 17, 2002 | 02:28 PM
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What year RX-7 do you have?

86-88 : Rod is extended when CLOSED.
89-91 : Rod is extended when OPEN.


Oh yeah, in 89-91, the exhaust does not effect the 6-ports
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Old Jun 17, 2002 | 02:36 PM
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Why are the ports open when the actuator arm is in on a S4? That makes no sense to me!! Damn Hayne's.....according to it there is no difference.
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Old Jun 17, 2002 | 02:38 PM
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Well, as you may know, i have a S5.

My friend has a S4 and we were comparing engine differences, that is one we noted. And we know both of ours are working perfectly .
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Old Jun 17, 2002 | 02:40 PM
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from my understanding on an s4 they are open when the rods are in
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Old Jun 17, 2002 | 02:44 PM
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thats fucked up but it makes more sense now...
its a S4

so you're saying that I can`t use S5 actuators in a S4 because they dont open up the same way....i'll take em off and wire them open so i can get rid of the air pump and acv
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Old Jun 17, 2002 | 02:48 PM
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That is weird. I wish HAILERS or Ted would show up and get all technical with this one. It makes no sense to me why that would work. But hell, like I said, screw the ports!! Who needs em!!
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Old Jun 17, 2002 | 03:23 PM
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I need em, for TORQUE
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