batboyvaj

I noticed an odd howling noise that seems to be boost dependant. the car drives fine and idles fine and all. but the moment i get to around 10-12psi I hear this howling noise and the car will not get to full boost (20psi). I've never encountered this before so any help would be appreciated.

blinx9900

i can't answer your questions but posting what brand/size/bearingtype turbo you have will help someone more well versed answer your question...

batboyvaj

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">i can't answer your questions but posting what brand/size/bearingtype turbo you have will help someone more well versed answer your question...</TD></TR></TABLE>

garret gt2871r with oil and water lines hooked up

HiProfile

A 'screaming' turbo that isn't supposed to usually indicates an balance issue, or bad bearings. Inspect the turbo fins VERY CLOSELY, I'd almost guess the wheels are contacting the housings, being chewed away, resulting in overspinning and underboosting.


Any idea on restrictor or feed line size? I would doubt its from overheating/oil coking due to the water lines, but you can still under-lube ball bearings. You could also have crap stuck in the oil supply passages, particularly if your feed comes from an unfiltered source like a cheap sandwich adapter.

batboyvaj

it's probably contacting. cause a loose coupler wouldn't make that sound. it sounds like its coming from the turbo

paulzy

iTrader: (1)

I had that problem when my bearings went out on my old turbo Leng.

Hopefully it's not though, those GT's are non rebuildable and you've only had it for a bit.

batboyvaj

damn, i hope not cause these are expensive! i prob only have like 8k miles on it.

98lude-t

sounds kinda like a siren then the turbo is done.

batboyvaj

i'll try to get a vid of it. It sounds like a supercharger whine.

Flashmn

is this an ebay turbo?

paulzy

iTrader: (1)

^^^ it's a real deal Garrett gt2871r

batboyvaj

yes this is a real garret. I hate the fact that if these turbos take a dump that you left with a paper weight. I may have to give the borg turbo's a shot. I really don't want to lose my boost response this turbo offered. But I can't afford to keep on dropping 1k on a turbo and can't even rebuild it. How much does it run to rebuild a s200 series borgs?

paulzy

iTrader: (1)

anywhere from $200-400 depending on place that does it and what they do.

You'd be surprised at how good the BW's spool

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by batboyvaj &raquo;</TD></TR><TR><TD CLASS="quote">yes this is a real garret. I hate the fact that if these turbos take a dump that you left with a paper weight. </TD></TR></TABLE>

Garrett has an exchange program that allows you to get new CHRA, might want to look into that...

big-cat

check your couplers dingle berry, mine use to blow off all the time when I had shitty piping and it use to sound exactly how you describe it and I would get boost but not as much.

Tippyman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by big-cat &raquo;</TD></TR><TR><TD CLASS="quote">check your couplers dingle berry, mine use to blow off all the time when I had shitty piping and it use to sound exactly how you describe it and I would get boost but not as much.</TD></TR></TABLE>

I was going to say, check your BOV gasket, BOV, charge piping, couplers, etc. It's cheaper than a turbo, lol. Might as well start there.

batboyvaj

Yes, I figured it out. My coupler on the TB was loose and boost was leaking out like crazy. I tightened up the coupler and all is good now

Tippyman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by batboyvaj &raquo;</TD></TR><TR><TD CLASS="quote">Yes, I figured it out. My coupler on the TB was loose and boost was leaking out like crazy. I tightened up the coupler and all is good now </TD></TR></TABLE>

Hopefully you didn't over-spin the turbo.

paulzy

iTrader: (1)

close call. good everything was alright

batboyvaj

i think the turbo is fine. its back to its old self now

big-cat

I so called that **** from like a computer away. thread=over!!!!!