?s on a MBC

[projektlaser90]

i belive i have a bad actuator and i was told that it limits the boost, so i have a question. if i put a manual boost controller will i get my turbo to work. help is appreciated

thank you
joe

 

[CanadianTSi]

If the actuator itself is bad then no a MBC won't fix it.

 

[projektlaser90]

okay thank you for the help. by chance does anybody know the price range of a new actuator j/w

thank you
joe

 

[oldman]

How do you know for sure it's the actuator? It can be number of things. Why not tell us what the problem is so we can help you confirm if it's the actuator?

 

[projektlaser90]

well im not sure, but ive read on this site a few times that the actuator need to be replaced. my car sat in a garage for about a year and that diaphragm probably got hard and weathered. also when i rev up that arm doesnt move flapper so i thought it would be the actuator

please give me back input, help is appreciated
joe

 

[gsxtacy]

its alot easier to test the actuator with compressed air from a compressor. Put air into the actuator nipple, if it moves your problem is elsewhere.

gsxtacy

 

[oldman]

when i rev up that arm doesnt move flapper so i thought it would be the actuator

The stock actuator is rated at between 10-12psi so unless you're able to build 10-12psi of intake pressure free revving it, which I seriously doubt, the actuator is not suppose to move.

Start from the beginning and tell us about you boosting problem, with as much details as possible. Again I stress, as much details as possible so it doesn't take another 10 posts just to figure out what your problem is.

 

[projektlaser90]

okay i have ruled out the actuator. today i took the intake tube off and i realize that my my turbo doesnt spin freely. there is no play in the shaft but the turbo is totally frozen so i called the mechanic that rebuilt it and it is gettin redone.

here is another problem. i think i figured out why it froze up. sitting between the head and the thermostat housing i have what i think is a coolant return line just sitting there not hooked up to anything. i told the mechanic about it, he said that the 1g turbo is only oil cooled not coolant (liquid) cooled. my question is, is that coolant return line supposed to be hooked up and thats why the turbo overheated and froze up. it has coolant slowly coming out so i know its supposed to be connected to something.

help is appreciated
joe

 

[oldman]

i told the mechanic about it, he said that the 1g turbo is only oil cooled not coolant (liquid) cooled. my question is, is that coolant return line supposed to be hooked up and thats why the turbo overheated and froze up. it has coolant slowly coming out so i know its supposed to be connected to something.

He is wrong, all DSM stock mitsu turbos are water cooled though many have ran them oil cooled only. With that said, he should have at least plugged the turbo coolant passages and loop the coolant lines. Do you have a turbo timer? How long do you wait before you shut off the car? I'm talking about every time you stop not just when you get home.

 

[projektlaser90]

okay thanks for that tip. but when i stop, like if its a quick stop at a gas station i leave it running unless im gettin gas the i let it run for about 60 seconds. same way when i get home. i think i got ripped off cuz the mechanics stories arent matching up with what he said before and i payed for a turbo rebuild and didnt get it. i read on the site that its not hard to rebuild a turbo. let me know about that. also if it is hard to rebuild a turbo does any body have a functioning 1g turbo that they want to sell let me know

help is appreciated
joe

 

[ddavisaf]

It's not to difficult to rebuild a turbo, just make sure you take pictures of where everything goes as you take it apart unless you've got a good memory.
I got rid of my coolant lines when I put my second 14b on. Less work since I was going through turbos like hot cakes.
I lets my car idle for 2 minutes if I hit boost more than once. Otherwise I let it sit for a minute.
If I run my car like a beaten dog I let it idle for about 5 minutes.

 

[oldman]

Rebuilding it is easy, the hard part is getting it balanced. By the time you're done, might as well have bought a new turbo or a good conditioned used one.

 

[JessesTalon]

Rebuilding it is easy, the hard part is getting it balanced. By the time you're done, might as well have bought a new turbo or a good conditioned used one.

Very true, very few shops let alone people in there garages have the tools and machines to get a turbo rebuilt and balanced correctly