here was my original thread:
https://www.rx7club.com/forum/showth...hreadid=164866

The solution was adjusting the the TCA (turbo control actuator) arm/valve connection point. At full extention the tca valve was totaly closed, so it ratteled around in the turbo manifold. I removed the e-clip, turned the part at the end of the arm one full turn so that right before full extention the arm would be pushing the valve completely closed.

Booyaaa....no rattle.

Hope this help any of you other rattlers out there.

 

That was hard to find I should think, good job.

 

yes it was, thanks dub :-)

 

Do you want a nice ETB ,call Garfinkle in Murfreesboro Tn.

 

ophh yeah, I already am in email contact with him, i just need to call him and get it going...,. maybe ill call him right now :-)

 

+k good thread.

 

hey damian the TCA is the lower rod right? Did you completly remove the TCA unit? how did you get the rod back on the gate? i just took mine off and cant get it back on and i didnt even turn the rod yet ( since it is rusted, which is why i want to remove the whole unit)was yours tight like this?

 

yep, its the very bottom one...and the end of it was rusted and a PIA to get loose so that i could rotate it for adjustment....i did not take the entire valve out, just jacked the front of the car up and worked under it...to get it backj on after i adjusted itpast the gate pin, i pushed back the actuator arm with some pliers until it poped on the gate pin, it should only be a very small a mount (like 1/8 of an inch) past the gate pin in order to hold the gate tight...for me, one full turn of the connecotr end (counterclockwise) was plenty...it dosnt take much, and you dont want to over due it because then it will not open the gate all the way when the actuator arm retracts...

 

thanks for all the help but one last question, are you sure its counterclock wise, because that would open the gate more when we are acually trying to close it all the way right? I can barely turn the thing..it takes me forever since its all rusted.. thats why im asking.

 

well, lets make sure we both think what we think we think :-) (hehehehe)

to my understanding:
the TC gate is closed normaly, then opens at switchover.... the TCA arm is fully extended normaly and then retracts into the actuator (opening the TC gate) at switchover..... so....

if your gate is 'rattling' around while at tilde (TCA extended, gate closed) then you need to extend the TCA arm a bit more to fully close the gate...rotating the end counter-clockwise (un-screwing it) will make the entire arm (end connector and arm) longer, thus pushing the gate closed further... so for what i did was adjust it so that the the gate pin and arm connector hole only lined up when I pushed the arm into the actuator a bit (only a few millimeters is needed) so that it kept constant pressure on the gate (closed)

make sence?

by the way, there is a locking nut behind the TCA arm connector, i had to break that darn thing loose first before i could turn the connector...real PIA!!! :-)

 

Damian!! im sorry man!! i thought i knew what the TCA was!! i was acually looking at the prespool gate above it.. im sorry. oh man i feel like an idiot... but yup i looked at the "real TCA" and that thing is loose!!! im going to get to work on it tomarrow!! thanks for all the help you da man!!

 

lol....
no problem man, let me know if it solves your rattle

 

Booyaaa....no rattle.

haha thanks damian...
i ended up turning that rod like 3 or 4 times, mine was real loose!!

 

YES!!! good stuff...i love it when shizzy works right :-)

glad to help :-)

 

it's a good thing I read through these posts. I know anyone you author is bound to be a good one. Thanks for saving me hours upon hours of diagnosis.

 

I think this could well be my problem too, at first I thought maybe one of the dust shields on the rotors were loose but it sounds as you have described, can I be a pain in the butt and ask one of you guys to get a pic of what you tightened - I'm learning loads about the rex day by day but I'm still behind you guys by a mile

Thanks!!

Dave

 

not behind me too much if at all, I'll take some pics as soon as I get my digi returned to be. It is very easy to see, if you jack up the front of the car and look directly underneath the turbos you will see two actuating rods. The lower one is the TCA, I had to adjust the one slightly above it (which required taking the assembly off (two bolts)). If it is the lower one that needs adjustment it can be done in 2 minutes. Just make sure not to lose the e-clip.

I'll get pics as soon as I can.

 

Thanks man, I'm usually pretty handy with car, just seems to be takin a little time with the Rex to find my way around (previous N/A boy as well, so turbos are all new :p)

Thanks again!!

 

very good info...

 

lookin for a reference point... would this be counterclockwise with your back to the firewall..

 

very good info! It's a shame you didn't figure this out a long time ago before i sold my car haha, owell, still good to know what is was, and something fairly simple.

 

yes, it is right hand threaded

 

but the one I had to adjust needed adjust in to tighten up the flapper, but this is the one above the one Damian was referrign to. It's actually quite easy once underneath. I'll try to get pics soon.

 

I take it you made the adjustment while the car was idle in?

 

Yeah dude, as soon as you get those pics up that would be awesome. My rattle just keeps getting louder, and i just CANT WAIT to fix it; its SOO frigin irritating. I was wondering too, does that gate really affect your boost or what? 'Cause i havent gotten a boost gauge yet, but im pretty sure its not runnin at full boost, so im hoping maybe fixing this will help............