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Old 12-29-2010, 09:37 PM   #1
jetski247
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Exclamation you won't believe this.....blown turbo pics....How?

from my previous post of me saying my turbo went out is an understatement. and for all those that think i'm hard on my car, this turbo only has like 4k miles on it with almost no boost seen, i was on my way to my families for christmas with my 8 year old daughter in the car, sleeping in the back, cruise was set at 60mph when this happened.

bought the turbo from a member here for $350 with "low" mileage of 20k, but i'm not blaming him, this IS my second turbo which is set at .14mpa according to my gauge with the pro-tune and a cai and full header/catless exhaust making about 270awhp. this turbo was babied compared to my original one that went out. anyway, here is some cell phone photos i took, the impeller on the exhaust side was gone.........like, shaft snapped and gone.







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Last edited by jetski247; 12-30-2010 at 08:37 AM. Reason: added some more info
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Old 12-29-2010, 09:53 PM   #2
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Nice Exhaust Wheel! I wonder where it is now?
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Old 12-29-2010, 10:02 PM   #3
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another question..........what banjo bolt should i run? the stocker has like a 1/32 hole and the aftermarket one has like a 5/32 size, and when my turbo went out, even with the tiny stock hole........it was enough to dump oil in the exhaust at an alarming rate, what do you guys think?

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Old 12-29-2010, 10:06 PM   #4
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What went through the intake of the turbo ?
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Old 12-29-2010, 10:07 PM   #5
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That's actually a pretty common vf39 failure. Same thing happened to my car around 60k.
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Old 12-29-2010, 10:09 PM   #6
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yup, something sure did break those blades
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Old 12-29-2010, 10:10 PM   #7
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Exclamation on the cold side of the turbo...

did that inducer have that chip on it before? If it didn't you probably or possibly have done damage to your motor
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Old 12-29-2010, 10:23 PM   #8
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not sure if the metal from the intake impeller is lodged in the intercooler or went through the engine, i don't know. i did stick a bore scope down each cylinder and saw nothing abnormal, just carbon.

did a compression check, all cylinders were even but my gauge only read 125psi per cylinder but its a cheap gauge. and i had all the spark plugs out when doing a compression check which is not how we do jet ski engines so i wouldn't think a car would be any different, an engine always spins over faster with other plugs installed.
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Old 12-29-2010, 10:36 PM   #9
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hhhhmmmm
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Old 12-29-2010, 11:02 PM   #10
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I have one as a paperweight on the toolbox that did the same. It was a TD04 from a Baja. The wheel is still on but wobbles around very loosely and the seals are still in tact.
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Old 12-29-2010, 11:35 PM   #11
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Quote:
Originally Posted by jetski247 View Post
not sure if the metal from the intake impeller is lodged in the intercooler or went through the engine, i don't know. i did stick a bore scope down each cylinder and saw nothing abnormal, just carbon.

did a compression check, all cylinders were even but my gauge only read 125psi per cylinder but its a cheap gauge. and i had all the spark plugs out when doing a compression check which is not how we do jet ski engines so i wouldn't think a car would be any different, an engine always spins over faster with other plugs installed.
do you see boost creep at all??? Your set-up really lends itself to some heavy boost creeping if you have a catless TBE and what PSI you run the turbo at? This is usually a common issue with a turbo exceeding maximum rated rpm's
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Old 12-29-2010, 11:36 PM   #12
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Quote:
Originally Posted by krambte79 View Post
What went through the intake of the turbo ?
Most likely nothing, with the hotside wheel gone the compressor is not unbalanced and wobbles so the cold side blade just bounced around and demolished the blades.
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Old 12-29-2010, 11:46 PM   #13
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Oil starvation
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Old 12-30-2010, 12:08 AM   #14
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I'm going with over oiling - the IHI turbos require very little oil to operate as the Subies operate at high pressure. This is why the garretts require a oil pressure reducer. I'd bet too much oil on the turbine wheel causing the seals to blow. At least that's what I think...
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Old 12-30-2010, 12:15 AM   #15
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Quote:
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I'm going with over oiling - the IHI turbos require very little oil to operate as the Subies operate at high pressure. This is why the garretts require a oil pressure reducer. I'd bet too much oil on the turbine wheel causing the seals to blow. At least that's what I think...
he was using the stock banjo...I strongly doubt it was oil starvation too though. I just wonder what his tune looks like and if he really stayed out of boost so much because his exhaust with an internal gate on a VF39 is a dangerous overboost nightmare...at least I would think.
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Old 12-30-2010, 12:24 AM   #16
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Quote:
Originally Posted by McKenzie83 View Post
he was using the stock banjo...I strongly doubt it was oil starvation too though. I just wonder what his tune looks like and if he really stayed out of boost so much because his exhaust with an internal gate on a VF39 is a dangerous overboost nightmare...at least I would think.

Hmmm - yeah I dunno, maybe IHI changed the manufacturing of the VF39 to some other location lately, but a few years back I RARELY saw a VF39 fail and definitely not with the bearing letting go enough to destroy the front compressor wheel and sheering the rear turbine wheel.... 90% of the failures i've seen are just smoke and whine and a lot of IHI turbos (thousands) have passed through my hands back in the day...
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Old 12-30-2010, 12:30 AM   #17
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with my original turbo and the tune, i put 35,000ish miles on it before the turbo went out............about 3500 on the second but it was/seemed like a good turbo with almost zero shaft play, everything was very tight.

interesting note about TOO much oil.........my first turbo shorty took a dump right after i removed my filters from my banjo bolts coming out of the cylinders, but i did still have the original banjo bolt with the single tiny hole that i would think would still restrict it.

i was cruising around 60mph behind other cars with the cruise control, i just fixed my fuel leak and a few other little things and didn't want to get into the car since the repairs just to make sure.

the car did give signs that it was fixing to go out though............the engine almost would make a missfire noise and the boost gauge would drop quite a bit then go back up. it did this several times right before it blew plumes of white smoke........i then pulled over, checked the oil with it just at the end of the dipstick, luckily i had 1.5 quarts of oil in the trunk and put it in and sat and waited for my buddy with the trailer to come pick me and my daughter up.

i hope i can get the car running, worst case i can at least trade it in.

Last edited by jetski247; 12-30-2010 at 12:37 AM.
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Old 12-30-2010, 01:07 AM   #18
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Quote:
Originally Posted by jetski247 View Post
the car did give signs that it was fixing to go out though............the engine almost would make a missfire noise and the boost gauge would drop quite a bit then go back up. it did this several times right before it blew plumes of white smoke........i then pulled over, checked the oil with it just at the end of the dipstick, luckily i had 1.5 quarts of oil in the trunk and put it in and sat and waited for my buddy with the trailer to come pick me and my daughter up.

i hope i can get the car running, worst case i can at least trade it in.
hmmm better check to make sure a piston ring didn't strike your turbine wheel... Also check your vacuum lines - mis-routed vacuum lines can cause excessive oil pressure....
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Old 12-30-2010, 01:14 AM   #19
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i'll look into that, how important is the little vacuum line that runs from the turbo to what i would guess would be the boost controller and then runs back to the intake turbo inlet? not sure what it is, sorry for the dumbness on that.....lol but it was dry rotted and broken and has been for a little while.

the part that is broken was going from the boost controller to the turbo intake tube, not the turbo to the boost controller or whatever that is.
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Old 12-30-2010, 01:50 AM   #20
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Quote:
Originally Posted by jetski247 View Post
i'll look into that, how important is the little vacuum line that runs from the turbo to what i would guess would be the boost controller and then runs back to the intake turbo inlet? not sure what it is, sorry for the dumbness on that.....lol but it was dry rotted and broken and has been for a little while.

the part that is broken was going from the boost controller to the turbo intake tube, not the turbo to the boost controller or whatever that is.
That would be unmetered air getting into your engine. Not good for that piston ring that likely ate your turbo.
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Old 12-30-2010, 08:36 AM   #21
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i hope it wasn't a piston ring.....and it would fool me being compression is dead even on all four. the port on the turbo intake where the hose from the boost controller is, is plugged off so there is no un-metered air going into the intake.

maybe the boost controller hose is critical? does anyone know how it effects the turbo? i'm talking about the little line that runs from the bc to the intake tube
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Old 12-30-2010, 09:04 AM   #22
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Quote:
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Oil starvation
That's my guess too. A lack of oil and/or coolant made the shaft too hot and caused embrittlement. It then shattered under load.
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Old 12-30-2010, 09:20 AM   #23
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Quote:
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Oil starvation
oil pickup tube??

wouldnt spend any money on repairs until you check this.
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Old 12-30-2010, 09:26 AM   #24
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Second turbo (although maybe a coincidence) throws a flag for me. What happened to the first turbo? What oil pump are you running?
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Old 12-30-2010, 09:45 AM   #25
jetski247
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stock oil pump
killer b oil pickup
oem oil pickup in oil pan was not cracked and in perfect shape...........installed killerb after first turbo went.

first turbo started blowing blue smoke and rattling a lot, lucky for me it was in town driving so i was able to park the car pretty quick to remove the turbo, the bushing just flat wore out i guess and actually locked the turbo up so that it did not spin.

all my turbo problems occured when i removed my intake manifold to have the leaky fuel lines fixed and read that i should remove the banjo bolt filters going to the turbo which i did, even though mine were spotless.

a few miles after the fuel line leak was fixed (never removed the turbo) it started blowing smoke..................then rattled a bit and locked up.

second turbo install from a low mileage car and was in prestine condition. primed the turbo, filled the coolant tank up, did everything i knew to do and it only lasted about 4k miles.

Last edited by jetski247; 12-30-2010 at 09:51 AM.
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