Arm for the actuator popped off of flapper on turbo

[GSTurbo1]

On my hahn 16g the actuator arm popped off of the flapper fitting for the turbo... could this be why my car takes so long to spool up? And the actuator will not move if i pull on it. Will only the pressure allow it to move?

what should I used to hold the actuator arm onto the flapper

 

[NHerron]

Yes that is why. The WG actuator has a spring inside and when the arm is attached to the flapper, it will have preload to keep the flapper from being blown open. So take the arm off and now the flapper easily gets blown open and the exhaust gases bypass the turbine= hardly any spool/boost

The spring inside, I believe is around a 12lb spring and that is why you can't open it by pulling on it

The flapper shaft should have a pre-drilled hole, does it not? The arm should slip over the flapper shaft and you would then insert a small cotter pin to keep the arm from coming off

 

[glowryder]

^ this.. also do a boost leak test.. if your having this many problems, odds are theres more. u should be building boost like at 23oo.. and full around 3200 or better.

 

[GSTurbo1]

Holy $h!t my car is too fast... and the turbo is more than plenty!!!! I hooked the arm onto the flapper took it for a drive and about nutted in my pants. . I have been through about 8 crotch rockets and the feeling from that turbo spooling comes close to riding the bikes. I just rode with an rx7 and wrx sti and they were amazed at the difference. I can actually keep up!!!! Thanks to all, you guys are awesome. So close to having the car where I want it. I set the MBC to a little over ten... maybe 12 psi, probably a little less. Def time for some wider tires to get the front to stick. All I need to do is lean the hard load out a little on my map and we will be good to go. What do you guys try to keep your AFR close to under hard acceleration

 

[MHuddy1213]

under boost you want to be around 11.0

 

[GSTurbo1]

Ok... when I get on it real hard goes to 10 and stays then almost cuts from too much fuel. Need to lean her out.

 

[MHuddy1213]

no the lower the numbers is the leaner you are the higher means richer you may need bigger injectors and a tuning device

if your hitting 10 on the wideband then your to lean and need more fuel

 

[1983gsp]

no the lower the numbers is the leaner you are the higher means richer you may need bigger injectors and a tuning device

if your hitting 10 on the wideband then your to lean and need more fuel

afr=air to fuel
10.0-1= 10 parts air to 1 part fuel
14.7-1= 14.7 parts air to 1 part fuel
higher the number the leaner the mix

 

[GSTurbo1]

I got 450cc injectors and megasquirt extra with tuning program on my computer, you know that 10 is really really rich though right... do a little research. 15-18 is lean

 

[NHerron]

afr=air to fuel

*cough*airfuelratio*cough*

 

[GSTurbo1]

afr=air to fuel
10.0-1= 10 parts air to 1 part fuel
14.7-1= 14.7 parts air to 1 part fuel
higher the number the leaner the mix

thats what im saying man... about made me question myself for a second. . but then

we are all good though, just need to lean it out... cant wait to get it tuned perfectly now. I'm going to have a monster after tomorrow. About an hour tuning and we are going to be in business.

 

[1983gsp]

Yeah yeah...you know what I meant.. its almost 2am..gimme a break

 

[NHerron]

Haha it's all good just messin

That whole GSP business was entertaining, I had no idea WTH JuntJoo was talking about for a minute

 

[1983gsp]

Kinda threw me for a loop as well...
I was being nice...really, I was.

 

[NHerron]

I could tell

 

[xxNocturnalxx]

I run 11.5-11.7 afr at around 21* timing up top on 92oct.

 

[MHuddy1213]

hmm htat was my mistake on that one i dont acctually have a wideband setup that was all on research that i did on tuners i mustve read something wrong somehwere my applogies guys

 

[NHerron]

'ess all good

 

[GSTurbo1]

Don't sweat it man... just threw me for a loop.