VF30 might still be good? Hmmm...
12-27-2002 | 01:39 PM
#1
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Pr0n King
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Posts: 26,618
From: The Land of Rocks
Car Info: Turncoat Turbo
VF30 might still be good? Hmmm...
Here's an e-mail response I received from a gentleman at Turbochargers, Inc. :
Now I don't know what to think. I guess the seal could still be bad - but it seems like it's not a unit that fails on this turbo. It seems that the seal is like a "bypass" valve that will vent excess pressure.
That would mean that something is wrong with the oil drain on my car? But if that's the case - why isn't the stocker blowing smoke?
The oil drain hose wan't pinched/kinked/blocked when I removed the VF30.
I'm confused. *sigh*.
Aloha,
Richard...
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Okay,
Here are my thoughts. The turbo is not "sealed", it has a piston ring seal at the turbine end, and thus can leak out that end and smoke if the oil is allowed to build up too high in the bearing housing. Reasons for the oil reaching too high a level would be that there is some kind of restriction in the oil drain back to the engine, excess crankcase pressure, or to much oil pressure and/or volume feeding the turbo. If your oil drain tube or line is at an angle more than 37 degrees, then that could cause. Ideally, the oil
drain should be pointing straight down. I wouldn't think that there is
anything wrong with your turbo and once you solve the problems allowing it to leak, then the smoke will clear up and burn away. Regards, Carl Gross
Here are my thoughts. The turbo is not "sealed", it has a piston ring seal at the turbine end, and thus can leak out that end and smoke if the oil is allowed to build up too high in the bearing housing. Reasons for the oil reaching too high a level would be that there is some kind of restriction in the oil drain back to the engine, excess crankcase pressure, or to much oil pressure and/or volume feeding the turbo. If your oil drain tube or line is at an angle more than 37 degrees, then that could cause. Ideally, the oil
drain should be pointing straight down. I wouldn't think that there is
anything wrong with your turbo and once you solve the problems allowing it to leak, then the smoke will clear up and burn away. Regards, Carl Gross
That would mean that something is wrong with the oil drain on my car? But if that's the case - why isn't the stocker blowing smoke?
The oil drain hose wan't pinched/kinked/blocked when I removed the VF30.
I'm confused. *sigh*.
Aloha,
Richard...
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12-27-2002 | 03:39 PM
#2
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Joined: Nov 2002
Posts: 191
I had a similar problem on my mitsu.
My mitsu. would blow blue smoke on my 16g at 16psi of boost after my rebuild.
I don't know much about the boxer engines capability to rid of excess crank case pressure.
Maybe bigger breathers on the center bank and vent it to the atmosphere.
Try this: krankvent.com
If Ferrari is using it it must be ok.
I don't know much about the boxer engines capability to rid of excess crank case pressure.
Maybe bigger breathers on the center bank and vent it to the atmosphere.
Try this: krankvent.com
If Ferrari is using it it must be ok.
12-27-2002 | 03:46 PM
#3
Registered User
Joined: Nov 2002
Posts: 191
I had a similar problem on my mitsu.
My mitsu. would blow blue smoke on my 16g at 16psi of boost after my rebuild.
I don't know much about the boxer engines capability to rid of excess crank case pressure.
Maybe bigger breathers on the center bank and vent it to the atmosphere.
Try this: krankvent.com
If Ferrari is using it it must be ok.
I don't know much about the boxer engines capability to rid of excess crank case pressure.
Maybe bigger breathers on the center bank and vent it to the atmosphere.
Try this: krankvent.com
If Ferrari is using it it must be ok.
12-27-2002 | 09:47 PM
#4
Thread Starter
Pr0n King
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From: The Land of Rocks
Car Info: Turncoat Turbo
Thanks for the thought El Jeffe! What's weird is it happens at IDLE. I can't believe the motor is that stuffed up at idle. 
Very weird. I also don't understand why the stock turbo does fine, but the VF30 blows smoke? That's why I'm assuming it's the turbo.
Aloha,
Richard...
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Very weird. I also don't understand why the stock turbo does fine, but the VF30 blows smoke? That's why I'm assuming it's the turbo.
Aloha,
Richard...
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12-28-2002 | 12:43 AM
#5
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From: Plymouth, MN
Car Info: 94 T-Leg Sedan and a 00 M5
Richard,
Have you thought about trying to put the VF30 back in just to see? The tradeoff is that you could jack your engine in a bad way.
If you can't get a replacement, I would think about it. But that's just me.
-Greg
Have you thought about trying to put the VF30 back in just to see? The tradeoff is that you could jack your engine in a bad way.
If you can't get a replacement, I would think about it. But that's just me.
-Greg
12-28-2002 | 01:42 AM
#7
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Pr0n King
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Thanks, Ed. That's what I think too.
I'm eagerly awaiting to see what Alex will say. No word yet though.
Richard...
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I'm eagerly awaiting to see what Alex will say. No word yet though.
Richard...
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