how do do wire ports open? i wunna get rid of my air pump but i wunna make sure my ports will open. and if i get rid of my air pump does it affect anything else but my ports? its on an 88 vert n /a

 

On s4's (86-88) the aux ports open from back pressure from the exhaust, NOT the air pump.

 

o then what is the airpump for? and how would i no if my ports open cuz i got RB headers then a resisnator and the rest is 2.5in piping

 

My actuators are seized up, does anyone know how I can fix this problem?

 

try manual opening them a few times, see if that helps it. If not oil them up a bit

 

The air pump brings fresh air to your cat, to help the catalyzing process. I think you would notice the difference, your car will pull much quicker when they open

 

I drove with them wired open when my eports hit the fan. I wired them closed about a week later. Its ok if you're a highway driver, but you will HATE if you street drive.

 

ok so i guess i can take the air pump off cuz i don't have a cat. but if ur ports wouldn't open could u tell?

 

Do you have a split air pipe coming up from your RB presilencer? Does it have a small vac line type thing coming off of it going to the actuators? If not then your actuators have been closed ever since you did the exhaust. If you DO have this stuff, easy way to tell is to put some white lithium grease on the rods on the actuators that go up and down when the sleeves are opening/closing. Go for a spirited drive, varying your rpms above 4k, come back and park the car. If the grease is smeared, they are opening, if it hasn't move, then they're stuck or not opening.

 

i jus put a pipe were the cat. used 2 b and the lil pipe thing i welded it 2 the pipe like it was on the cat.

 

Ports are generaly worth ~20hp. Yes you will tell. If you wire them open, you'll have no low end (absolute **** to drive on streets-- you'll slip burn your clutch in a year prolly) with plenty of high end., if you wire them closed, you'll have plenty (at least for how rotaries go) of low end, and decent high end.

Personaly I drive in town alot, and having to slip the clutch from 3k rpm at every a stoplight because the ports are wired open is just frustrating. With the ports wired clsoed I can take off from just above idle with no problems.

 

i hate having my ports wired open on my vert... but its all i can really do for now... im prolly gonna just put the acutors back on and have no top end cause my gas is really sucking right now...until i can get all the parts i need to remove the manifolds (gaskets, injectors, banjo bolt, and a few other goodies) i cant take them out... but when i do then problem solved

 

i just did the grease thing and my ports open and all that good stuff so i guess i got enough back pressure 2 open them. so all i need is a dual alternator pulley and take off my air pump. do i need 2no anything or do anything special b4 i take it off?

 

how do you test this on an s5 since the acuator rods move up and not in like an s4

 

Ok guys, my actuator (the one I can reach, closest to the firewall) will only move about 1 mm, it wont budge after that. What do I do? Ive tried spraying it with WD40 and other products but I cant really get it to budge. What do I do?

 

good thread in the archive about how to clean the 5 and 6th ports... a complete walkthrough... check it out

 

post whoring...


ermm..

I mean "don't wire your ports"
yeah...

 

so i have an s4 and i can just ditch the airpump withought losing my actuators?

 

Cant find it. Can you post the link for me?

 

Never mind, found it .
https://www.rx7club.com/showthread.p...0&page=1&pp=15

 

When i rebuilt my s4, i removed all emissions and the air pump, and wired the ports open. I have little trouble starting out from stops, but there is a noticable power boost around 4k, when the mixture is rite. Attaching an A/F ratio gauge helped alot to tune it, but a safc will help alot to even out the fuel curve below 4k.

 

I can do this while the engine is in the car right? Because I don't need a rebuild I just want working auxilery ports.