thatman

iTrader: (4)

I really think that my ports are not opening properly. here is a video...
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They seem to push out not down like my friends do. I recently just did a pacesetter header swap, haven't got the O2 sensor plugged in yet, I Do have the tube from a high flow cat plugged in.
What do I need to do?

jjcobm

iTrader: (18)

They should push UP (S5) or DOWN (S4). What series do you have?

Pushing out indicates that the rod isn't properly installed or just has free-play (first time i've seen this). Remove the actuators and see if the rod wants to pull all the way out or just have play in them. If they don't come all the way out, check to see they rotate up and down freely. If they pull out all the way, be very careful because you have no way of knowing how to attach the rod to the sleeve since its all inside the lower intake manifold. The rod is held by one bolt and one screw and if you get to the point you need to fix those, be warned that you will be tearing the lower intake manifold to get the rods installed on the sleeves properly. Take caution when pulling on the rod and try not to move it left or right if it is coming out freely without a "stop".

If they just have play in them and rotate freely, reinstall actuators and don't worry about it... Probably just the air pressure in the intake pushing them out slightly...

Free-reving the engine in neutral on an S4 will do nothing to get the actuators to move. It is under load that they open up (push down). I haven't messed with them much on an S5 during idle but they MAY open up free-reving due to the airpump...

thatman

iTrader: (4)

I see, well, its an S4 and my friends 88 pushed down free revving in neutral. Though he has a full racing beat exhaust.

datz

s4 actuates via exhaust backpressure, s5 actuates via airpump and wont actuate unless the engine is under load like driving.

thatman

iTrader: (4)

Well I can push the rods down pretty easy, and both of them move fine...just that when the car is running they push out not down. Though I have yet to take the actuators off again and try pulling on the rod...

datz

the actuators are probly fine, the compression/pressure when the engine revs up is pushing the sleeve (the actuator pushes/pulls) out a little (not held in right or at all ) then when the butterfly valves close the vacumm jumps up and pulls the sleave back in.

thats my best guestimate.

thatman

iTrader: (4)

^So you think that they may be okay? Well im planning on putting it on a Dyno next week, how much power top end wise would i lose if they are not opening?

rx-7 obsessed

wheel no clue but i can tell u its alot a good 20 30 hp its live a v-tec less honda

JamesBong

I had the same symptom with mine. I'll bet your 5/6-port actuator seal is hard, brittle and needs replacing. They're $4.76/ea at Mazdatrix; http://www.mazdatrix.com/c-2.htm bottom of the page.

thatman

iTrader: (4)

good idea, ill also likely get the gaskets with the seals too! Thanks all for the help.

Rx-7Doctor

iTrader: (13)

The only way that they can push out is if they are installed incorrectly. :-)

.Installed correctly they are at the fully extended position. Therefore there is no way they can push outwards.

Rx-7Doctor

iTrader: (13)

If the actuator is working and the sleeves are clean and free plus you have the correct amount of back pressure, revving the engine up "Will" activate them!

thatman

iTrader: (4)

Yeah, looks like im going to be having some fun yes?:


So Ill have to be doing some disassembling to get this taken care of. Any good tutorials on how to correct this?

datz

o ya the FSM

jjcobm

iTrader: (18)

1. Remove throttle body
2. Remove upper intake manifolds
3. Remove lower intake manifold

NYsNumba1Man

iTrader: (1)

Alright..... total noob question here but what are Aux actuators?

HAILERS

JPG attached