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Author Topic: Why do turbo leak and smoke?  (Read 5746 times)

b20beast

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Why do turbo leak and smoke?
« on: August 19, 2009, 07:34:19 PM »
Anyone has real info WHY a turbo leaks or smoke?

Dont say BAD SEALS.

The seal looks like a piston ring to me, so idk
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jagojon3

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Re: Why do turbo leak and smoke?
« Reply #1 on: August 19, 2009, 07:37:02 PM »
BAD SEALS or too much oil pressure which may or may not damage the seal.
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Robb

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Re: Why do turbo leak and smoke?
« Reply #2 on: August 19, 2009, 07:39:21 PM »
Because your turbo cant stand how ignorant you are, and is killing itself to get way from you and go to turbo heaven. 



No seriously though...
Quote from: jagojon3 on August 19, 2009, 07:37:02 PM
BAD SEALS or too much oil pressure which may or may not damage the seal.

What kind of turbo is it?
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blowoff valves are for pussies.

ratcityrex

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Re: Why do turbo leak and smoke?
« Reply #3 on: August 19, 2009, 07:42:32 PM »
Or a shitty drain line like a kinked one and it pressurized the turbo and blowes oil past the seals.
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New setup is old bottom end with a hype r head with gsr cams. built lsv with hx35 @ 26psi on pump gas
LEED tuned! 434hp/329tq http://www.youtube.com/watch?v=_pbDXZxZdZs
http://www.realhomemadeturbo.com/forum/index.php/topic,16195.0.html

Old Setup B18a1 296hp/289tq LEED Tuned 20psi on pump! http://www.youtube.com/watch?v=2Yj-Z90j4W4   
http://www.realhomemadeturbo.com/forum/index.php/topic,205.msg2437.html#msg2437

b20beast

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Re: Why do turbo leak and smoke?
« Reply #4 on: August 19, 2009, 08:18:20 PM »
how exactly do seals get damaged?

their like piston rings
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danz

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Re: Why do turbo leak and smoke?
« Reply #5 on: August 19, 2009, 08:38:17 PM »
why dont you try reading what these fine gentlemen  O0 :mexi: :?:  just told you.  then you might realize how stupid your latest question is
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brine04

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Re: Why do turbo leak and smoke?
« Reply #6 on: August 19, 2009, 09:02:57 PM »
Quote from: b20beast on August 19, 2009, 08:18:20 PM
how exactly do seals get damaged?

their like piston rings

Ever seen a motor with blow by from worn rings?
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Jorsher

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Re: Why do turbo leak and smoke?
« Reply #7 on: August 19, 2009, 09:07:08 PM »
Quote from: brine04 on August 19, 2009, 09:02:57 PM
Quote from: b20beast on August 19, 2009, 08:18:20 PM
how exactly do seals get damaged?

their like piston rings

Ever seen a motor with blow by from worn rings?

lulz brine u n00b

my engin wit 270k miles runs lik a top

i jus gotta put oil n it every week
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Robb

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Re: Why do turbo leak and smoke?
« Reply #8 on: August 19, 2009, 09:56:42 PM »
Turbo "seals" are usually just metal or ceramic snap rings that are a snug fit in their respective channels. Excessive oil pressure, carbon buildup, wear from spinning in their bores, etc. are what make your turbo smoke. 

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blowoff valves are for pussies.

patsmx5

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Re: Why do turbo leak and smoke?
« Reply #9 on: August 19, 2009, 10:42:14 PM »
Too much oil pressure or a shitty (not excellent) drain can make a new turbo leak oil. I run a .070 restrictor on my garrett, but I've talked to two engineers that work for garrett and they both told me the same thing. They are not aware that any turbo they sell needs a restrictor added to it. A good drain is a must though.
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Quote: Originally Posted by Adam Hopkins
There is no such thing as too much boost. You could have too little rod, piston, or sleeve. But never too much boost.

Eggylshatch

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Re: Why do turbo leak and smoke?
« Reply #10 on: August 21, 2009, 02:57:36 AM »
Quote from: c0mpl3x on August 19, 2009, 10:48:00 PM
Quote from: Robb on August 19, 2009, 09:56:42 PM
Turbo "seals" are usually just metal or ceramic snap rings that are a snug fit in their respective channels. Excessive oil pressure, carbon buildup, wear from spinning in their bores, etc. are what make your turbo smoke. 



to understand this better, find a forester xt/legacy or outback gt/wrx, and stand behind them for 10mins.   all of the above will show

Do you still have your wrx?  If so, whats its status?
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HiProfile

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Re: Why do turbo leak and smoke?
« Reply #11 on: August 21, 2009, 10:19:01 PM »
Quote from: c0mpl3x on August 21, 2009, 01:16:09 PM
yup still got the slut.  just got it back from the bodyshop after sucking a telephone pole missing a deer.  it fully does wheelies and barrel-rolls.

I don't believe it. Last time you only said barrel-rolls.

If you look at the 3 general type of seals used in modern turbos, they are intended to seal around the shaft, not 90* in the direction excessive oil pressure would push it. Bad oil drains is similar to what an unvented crank case does to rings. Since there is no relief from the pressure, the oil goes the only place it can - into the compressor and turbine.

I've not ran as many turbos as some people, but I've never blown a seal. This includes my 2 old turbos, one is 20+ years old, one was dis/reassembled w/o rebalancing. It amazes me how all these Honda retards blow turbos, yet only a fraction of other car groups can do the same on their turbos. It seems like many Honda guys think their shit don't stink, and don't use a proper restrictor or oil drain.
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Robb

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Re: Why do turbo leak and smoke?
« Reply #12 on: August 22, 2009, 04:52:15 PM »
Only turbo's ive killed were because of compressor surge spooling at 1200rpms on small shaft MHI turbos pieced together from 3 separate units. 

HiProfile is right, most people fail at the feed and return. Turbos are fucking tough, it really does take alot to kill one.
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blowoff valves are for pussies.

turbob16hatch

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Re: Why do turbo leak and smoke?
« Reply #13 on: August 22, 2009, 05:29:52 PM »
i agree with people failing with feed and drains. i see way to many dumb shits runing kinked oil drains and huge oil feeds.
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b20beast

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Re: Why do turbo leak and smoke?
« Reply #14 on: August 23, 2009, 01:02:11 AM »
I run a .065" restrictor -4 Line
And -10 Return line, straight shot.\

Turbo still smokes with  new seals.

I think it may of been blowby/back pressure...

i rebuilt my engine, do you think new turbo or rock this one?
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ratcityrex

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Re: Why do turbo leak and smoke?
« Reply #15 on: August 24, 2009, 11:45:28 AM »
take the turbo off and see if your shit still smokes.
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New setup is old bottom end with a hype r head with gsr cams. built lsv with hx35 @ 26psi on pump gas
LEED tuned! 434hp/329tq http://www.youtube.com/watch?v=_pbDXZxZdZs
http://www.realhomemadeturbo.com/forum/index.php/topic,16195.0.html

Old Setup B18a1 296hp/289tq LEED Tuned 20psi on pump! http://www.youtube.com/watch?v=2Yj-Z90j4W4   
http://www.realhomemadeturbo.com/forum/index.php/topic,205.msg2437.html#msg2437

DreaMeR

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Re: Why do turbo leak and smoke?
« Reply #16 on: August 24, 2009, 11:58:10 AM »
uh, how about a compression test to see if its your engine?...
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b20beast

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Re: Why do turbo leak and smoke?
« Reply #17 on: August 24, 2009, 07:37:16 PM »
2 weeks later i found broken ringlands !


all 4 of em
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shadow

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Re: Why do turbo leak and smoke?
« Reply #18 on: August 24, 2009, 08:07:51 PM »
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