Kinda strange.

[GOLDCYLON]

Originally Posted by A26B

Mine were installed backwards? (some controversy about that even). With the plenum off, I checked operation with a hand vacuum pump before turning the actuators over, and afterwards. There was a significant difference in operation after I put the actuators on "correctly". It took more vacuum & hung a little before opening completely, with the actuators installed "correctly". It was a no brainer, I returned them to the backwards? position.

I've not heard of any operational problems with actuators installed backwards?, other than it "just looks crooked."

I hear what your saying Jerry. Im betting if you had a fresh set and installed them correctly the result would be different. When they were installed backwards the diaphram was tweaked already the other way. I would not recommend turning them unless you had replacements even if they were installed backwards.

[USAFPILOT]

where do you get and how much are the replacements?

[GOLDCYLON]

Last pair I got was from a registry member. One off of Ebay

[rhipsher]

I bought two on ebay for $50. They came off an 18K Z. I gave one away to a reg member who needed one and the other one is rolling around in one of the kitchen drawers. I'll keep that one for myself. I'll probably need it one day.

[Dynomite]

Originally Posted by GOLDCYLON

I hear what your saying Jerry. Im betting if you had a fresh set and installed them correctly the result would be different. When they were installed backwards the diaphram was tweaked already the other way. I would not recommend turning them unless you had replacements even if they were installed backwards.

I will hot wire my spare vacuum pump and test the secondary actuators like I said just before I washed my cell phone

There is a black plastic sheet about 24 inches x 8 inches that sits under the radiator....which way does that fit

There are two slots in it about 3 inches from each end.

Not like I am highjacking this thread or anything

I will go out now and test my secondary actuators for ya

[32valvZ]

Are my posts invisible?

[rhipsher]

Dynamite! Are you legally blonde?

[rhipsher]

Originally Posted by 32valvZ

Are my posts invisible?

No we are just ignoring you.

[Dynomite]

Originally Posted by 32valvZ

I would just buy new ones. If you turn them around now you will more than likely have future trouble. The rubber diaphragm has now taken a shape from heat cycling and being installed as it has. When you flip them around the brittle rubber is forced into a new position and will eventually crack. Think of a wire hanger when you bend it back and forth quickly to break it in half, same concept.

If you do get new ones, check them with a vacuum gauge and make sure they pull in straight & evenly. I went through 11 cans before finding 2 that were perfect.

When I reassembled the secondary system, I put a dab of white assembly lube on every moving pivot point. My secondaries work flawlessly and without any lag time.

You are DAMAN
I am NOT ignoring you....this darn system is so slow tonight I can hardly stand it I just had a bad day

What you say as a solution I am doing all of that. I just got back from experimenting exactly as you suggested (after spending the last couple hours trying to dry out my cell phone) hot wiring a spare vacuum pump I have and using a long spare roll of vacuum line connected to each secondary.

Do you want to hear how the ole experiment went

Well....The actuators were first installed correctly for the experiment (they were backward before) with the short leg of the shaft "L" facing toward center of engine......(the short leg of the "L" was facing outward before and incorrectly causing the actuator shaft to be angled toward the outside of the engine toward the actuator)......

When I applied a vacuum to either actuator, the first motion of the "L" was toward the center of the engine a bit (toward the direction of the short leg of the "L"). Both actuators moved from that point smoothly pulling the secondary.

Now.....32valveZ if I rotate both actuators back the "wrong way" like they were.....with the short leg of the shaft "L" facing outward and with the resulting greater angle of the shaft........the first motion was outward in the direction of the short leg of the "L" tending to make the angle of the shaft less and that side motion was greater than it was when they were installed correctly with the starting angle of the actuator shaft less.

So....what you are saying 32valveZ is that since these actuator shafts started with a greater side motion when installed incorrectly there is prolly much greater fatigue of the rubber which is suppose to hold the vacuum.

And now if one were to keep those secondary actuators (installed now correctly) the motion of the actuator shaft has now changed considerably and as such would not be reliable especially given the work to replace them involves removal of the plenum and other crapola

[Dynomite]

Originally Posted by rhipsher

Dynamite! Are you legally blonde?

very funny rhipsher .....I am just being honest......stupidly honest

I thought I was at the place here where I can ask stupid questions

Damn cell phone in the washing machine made me feel like I should apply for some of those Obama social programs where the $%&*#$&% you are the more money you get

When anyone uses the sign responding to my posts...they really mean it