Running only 3psi, what gives??

[Chase]

I know Im probably going to get shit for this but there are alot of knowledgeable people on here and I am just seeking some help here.

So I just put on a new 50 trim Garrett turbo onto my JDM GSR (B18C) and now my boost gauge only shows 3 psi and full throttle and man, does it take a long time to get to that 3psi. I initially had a normal ebay 50trim on it and it worked just fine but I wanted to go more "legit".

- Checked all intercooler pipes and no bursts or broken welds or cut couplers.
- Thought it might be the bov so we blocked that off and still dont gain PSI.
- Took off the TIAL WG and the spring isnt stuck open.
- Tried to pressurize the intake side and didnt hear any leaks, also inspected all vacuum hoses and dont see any rips or tears.

Honestly I think I am just clueless here, does this sound like my buddy sold me a shit Garreet? But I keep thinking if that was the case I would leak oil or the turbo would smoke alot... PLEASE HELP!

[SlowEGG]

Sounds like you've got a boost leak. Especially if its taking years to get to 3lbs.

[Garage_Boy]

crack manifold?

[miguel30660]

your being punished for taking the telbo i wanted!!! lol

[picturethis]

It's your fuel, bro. You got a nasty hole in 3rd.

[slowdc5]

sounds like you've got a boost leak. Especially if its taking years to get to 3lbs.

x 2

[slowboyb16]

wastegate ?

[Chase]

Sounds like you've got a boost leak. Especially if its taking years to get to 3lbs.

ya I know, thats the first thing I thought of to bit I've looked everywhere in my engine bay and have taken my entire intercooler piping/intercooler off and checked to make sure its pressurized and its just fine.

[Chase]

your being punished for taking the telbo i wanted!!! lol

At this point im 99% sure that turbo is shit

[Chase]

crack manifold?

IDK about this one, I checked it right away and dont see any cracks or anything, plus I start it and try and feel for exhaust leaks pre turbo and I dont feel a thing.

[SlowEGG]

sell it to miquel and move on :lolhit:

[Blackcherrytsi]

Put old turbo back on and see what she's boosts at

[Chase]

Put old turbo back on and see what she's boosts at

ya thats what Im thinking about doing its just that, that old turbo is a ebay one and it spins very slowly when you spin it with your hand, its not free spinning at all. Just thinking that would be a little dangerous since it was also leaking a small amount of oil before.

[tork]

Are you running an air filter?

[Chase]

nope

[B20T]

is the ex turbine even spinning? at full throttle?

[miguel30660]

sell it to miquel and move on :lolhit:

no need for a telbo now that im going h2beast
coming for you peter and marty :eek2:

[Arrrrgh]

no need for a telbo now that im going h2beast
coming for you peter and marty :eek2:

wait wait just because you going h2b dont mean youll be running 11s str8 out the gate

[miguel30660]

martys at 11s, peter still at 12s lol we'll see when im done
your car gonna be ready by then?

[Sikocivic]

On some wastegates there is a small "ring" under the flange. It can fall out when you pull the wastegate off. It acts as a seal. I had it happen to me on my old hatch, drove me nuts until RS Motors found the problem when it was on the dyno.

[SlowEGG]

martys at 11s, peter still at 12s lol we'll see when im done
your car gonna be ready by then?

Might as well buy my parts lol. As long as your car isn't red. You'll be good.

[Arrrrgh]

martys at 11s, peter still at 12s lol we'll see when im done
your car gonna be ready by then?

my car is long gone

[ej1_ex]

check the turbo and see if there is shaft play. There should be no reason it's only boosting 3lbs. How much were you boosting before the turbo switch? Did you switch back to the same size turbo?

[miguel30660]

Might as well buy my parts lol. As long as your car isn't red. You'll be good.
i should do that
my car is long gone
:(

[lindseyhunt_1090]

i second the fire ring on the waste gate. it may not be in. all thought i figure it would sound obvious to have an exhaust leak that big. to barly be boosting 3 psi there must be a huuuge leak in your charge system. make a charge pipe tester to pressureize your intake system with a psi gauge. your turbo would be noticeably fucked big time to not make 3 lbs. i can blow that lol.