internal wastegate

[rza808]

i dont know the tech terms but the thing that the in. wastegate hooks to, should i have to pull the bar a little to get it on or should it just slide on. i know it depents on what boost i am running but is it bad if that bar is not pulling the flange thing back when its hooked on?

 

[gofer]

i dont know the tech terms but the thing that the in. wastegate hooks to, should i have to pull the bar a little to get it on or should it just slide on. i know it depents on what boost i am running but is it bad if that bar is not pulling the flange thing back when its hooked on?

You should have to pull on the wastegate a bit to hook it onto the flapper, it shouldn't just slide on. If it does that means your flapper is always open and your not building boost like you should.

If this is whats happening you can use shims (washers) on the bolts that hold the wga to the compressor housing.

 

[rza808]

i guess the problem is the boost is to high when its like that and i can't use the boost controller to bring the boost down

 

[gorf]

its called the waste gate actuator and maybe it is bad. Disconnect the hose that goes to it and blow some air into it with a compressor - you should see it move. If not it is bad.
OR
leave the hose connected and do a boost leak test and you should also see it move, if you have a gauge you will be able to tell what boost it starts to move at.

 

[rza808]

shot air in the wastegate and it opened but heres another problem my boost will spike at 20psi then move back to 16psi and fludder. if i turn up the boost controller the spike goes higher then comes back do you think its a wastegate problem or a boost controller problem or maybe somthing else

 

[gofer]

shot air in the wastegate and it opened but heres another problem my boost will spike at 20psi then move back to 16psi and fludder. if i turn up the boost controller the spike goes higher then comes back do you think its a wastegate problem or a boost controller problem or maybe somthing else

How do you have your boost source vacuum lines hooked up, TAKE A PICTURE INSTEAD OF EXPLAINING IT. Take a picture of how the boost controller is hooked up, the wastegate actuator, & your bov.

 

[rza808]

i cant take pix

line from turbo up pipe to botom of the hallman boost controler
from side of boost controller to wastegate.....done

stock boost solinode line from top makes a circle to bottom... conected to itself.
bov straight to intake

 

[gofer]

You need to shim your wga, just throw in a few washers under the bolts that hold it to the compressor housing. The "SPIKE" that your seeing is only going to be resolved by porting, replacing the boost controller or the wga won't fix it. You can also run bigger injectors/bigger fuel pump/dsmlink and run 20psi of boost and not worry about the spike.

If your going to port everything search the forums tech articles and vfaq, there are more than enough threads about it.

 

[rza808]

i just put in some 560's i have a 255 pump no link yet and now i cant get the hallman boost controller to hold higher then 16psi. should i start cranking the mbc up more and more and what is the range in psi for the hallman pro?

 

[gofer]

i just put in some 560's i have a 255 pump no link yet and now i cant get the hallman boost controller to hold higher then 16psi. should i start cranking the mbc up more and more and what is the range in psi for the hallman pro?

What are you controlling your fuel with if you don't have dsmlink, an SAFC? If the wga isn't HOLDING your flapper closed then its always open, thats why you need to shim it with washers.

If you turn up the mbc half a turn your boost should raise from 16psi to 18 or 19psi. The "range" on your hallman mbc is 10psi (since thats the lowest your wga will allow you to run) to more than your motor can take.

What bov do you have?

 

[rza808]

rfl bov and im using a maft

i adjusted the wastegate so it pulls on the flapper

so your saying if i turn the mbc all the way neg. boost. then it will be at 10 psi then if i turn 1/2 turn from there it will go up? cause it doesnt

 

[gofer]

rfl bov and im using a maft

i adjusted the wastegate so it pulls on the flapper

so your saying if i turn the mbc all the way neg. boost. then it will be at 10 psi then if i turn 1/2 turn from there it will go up? cause it doesnt

Remove the mbc completely and just run a vacuum line from the intercooler pipe to the wga, it should hold around 10 to 12psi.

 

[rza808]

how does that help i want to run 19-20 psi but i turn the controller 1 full turn but boost doesnt go up. do i keep turning it till it goes up or should it go up when its all the neg and i start turning?

 

[gofer]

how does that help i want to run 19-20 psi but i turn the controller 1 full turn but boost doesnt go up. do i keep turning it till it goes up or should it go up when its all the neg and i start turning?

It helps to see whats wrong with your setup. With no boost controller your wga should control boost to 10 to 12psi.

With the boost control knob completely backed off it should boost what the wga controls it to (10 to 12psi) turn it CLOCK WISE (righty tighty) to turn up the boost. On my hallman mbc it was almost halfway before it did anything, just be careful... on a mbc its a trial and error thing, not a turn it up and mash the throttle and blow your motor because then theres really no trial just one big ERROR.

 

[rza808]

thats way im looking for the range if the range is 2psi-100psi example then when its all the way turned neg then the first turn wont do any thing and the second and the third, until the mbc is at more then 10psi then the next turn will be 12 and so fourth is that right and i just have not turn the mbc enough to past what the stock wastegate is set at?

dam you posted to fast you answered my question before i could ask it THANK YOU VERY MUCH