Installed New Turbo And Can't Get Boost?

[Haysey]

is it a sliding performance highflow?

[PM-R33]

[JET-25L]

Err not that it's really going to help much.... but anything stand out obvious wrong from these couple of photos lol. The oil feed banjo isn't sealing 100%.. i need to fix that but I don't think that would be doing it..

[GTScotT]

is there a gasket or gasket glue on the turbo outlet flange? does the car goto 0 vaccume when you put ure foot to the floor, as in right away?

[JET-25L]

Hey yeah there is a gasket... It doesn't go to 0 straight away.. if i drive it it slowly climbs to a tiny bit below 0 and then doesn't go up any higher even if foot is flat.. grrrrr

[GTScotT]

that sounds like a problem, as putting ure foot down to the floor regardless where in a non turbo motor should give 0 vaccume, and on a turbo motor should give 0 vaccume then boost, i just added you on msn so i can ask you about it there instead of in a million posts

[RBwhatever]

Absolutely positively sure the IW isn't stuck open? It's not something really stupid and you left a rag in the exhaust or compressor housing when you bolted it up? Can you manually actuate the wastegate?

[JET-25L]

Hey yeah i can the wastegate flips open and closed without the arm attached to it just as easily as the old one.

I just went for another drive.... a big one this time... at 47% throttle (i went more than this) it's 58% airflow @ 4600rpm. It's like nothing nothing nothing then if i give it more the boost goes up to like 5psi and then when i back off the bov goes off like normal but the turbo makes a really faint spool like it does when you blow a cooler pipe so perhaps it is just leaking somewhere afterall.. Is a highflow going to make it THAT much laggier?:s Perhaps it's been bored out too much?? Doubtful as it still utilizes the same front and rear housings. I'm just waiting for someone to say that it will be different to drive with a highflow than standard but it's not that..

Which leads me to my next question... if the turbo is capable of producing even small amount of boost does that rule out that the turbo is the problem?? Or not necessarily...

*checks all hoses and piping again..*

Thanks for everyones help...

[paulr33]

if the gate was stuck open it would go into vacuum instantly no problems and build some boost

it would just be mega laggy to build a useful amount of boost

but getting to 0 should be almost instant with gate leaking or not

it sounds like your manifold isnt pressurize, ie; your engine is atmo

this explains why you cant reach 0 vacuum

[DRIFTER]

sounds like the actuator rod isn't adjusted correctly and its not holding the flap shut.

[JET-25L]

I put the standard one back on for now so i didn't have to play with adjustments while i was sussing it out.

[RBwhatever]

Yeah maybe you just forgot to tighten a hose clamp and its half blown off.

If its a bush bearing highflow it will be laggier again over a turbo thats BB of the same specs or a standard turbo. It won't deliver the boost as nice as a BB.

[PM-R33]

Steve im getting a headache thinking about what the hell it could be!! Maybe some of that blown exhaust wheel made its way up through your exhaust manifold into your engine

[MBS206]

Take it to a mechanic at this stage...

[JET-25L]

Yeah i'm gonna pull the dump pipe back off... make sure the wastegate flap is 110% closing correctly and make sure the arm is pulling it shut... when that's off also make sure the wheels are still spinning together and are tight... after that I think there's nothing more i can really do and will gladly pay a shop to fix whatever it is.

[meet07]

im having a brain fart but it seems like I have had this problem before. Maybe some how that turbo is out of spec?? The boost is suppose to be built up in the compressor housing and then distributed throught out the intercooler piping. Almost sounds like it may be sucking but not pushing if ya know what I mean. check the gasket on the comp housing. I think that fixed my problem before. It suxed trying to find one. or take the turbo off and get it checked by a pro. Or if ya have a freind with anouther turbo borrow it.

Good luck

[FloydWestwood]

that would be crazy if the turbo was built incorrectly. take it to a mechanic dude, or like Demetrius said, try borrow another turbo.

[MBS206]

Just had another look at pics.

1) Move your pressure source AWAY from your FPR.

You should NEVER tee things off the FPR signal line. You can cause pressure drops when putting things on that flow air etc.

2) Your hose clamps on the hot side of the intercooler to turbo seem to not be sitting right. Undo them, line them back up, redo them.

[JET-25L]

Played around with the wastegate arm and redid a few hoses. Car runs alright now. Just lag laggy. I can live with that though..

Steve.

[PM-R33]

It shouldn't be that laggy if it's only a high flow. I still think something might be wrong dude. You'll have to take me for a spin it it.