New turbos constantly leaking coolant

chef423

Private
Sep 28, 2023
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Hydra Performance twins. Front turbo leaking at the coolant lines. New lines, new O-Rings.

Im lost. Any ideas are welcome.

Chris
 

ktb_e92

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Apr 16, 2024
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Indiana
Ride
2007 335i MT6
Are you sure the feed & return going into the block & turbo are pushed in all the way? Sometimes you may think they're pushed all the way in, when in reality they may be a tiny bit loose. Other than that, I don't see why they'd leak if the hardware is new unfortunately. Unless a leak sprung that is streaming toward that direction, making it look like the line is leaking when it really isn't? Let us know
 

oVeRdOsE

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Jun 12, 2024
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Are you sure the feed & return going into the block & turbo are pushed in all the way? Sometimes you may think they're pushed all the way in, when in reality they may be a tiny bit loose. Other than that, I don't see why they'd leak if the hardware is new unfortunately. Unless a leak sprung that is streaming toward that direction, making it look like the line is leaking when it really isn't? Let us know
Agree. Those can be hard to push back. Also, they need to be fully seated before torqueing the screw back, if not it will go sideways and tear the o-ring.

You can use soapy wota or silicon grease, this will help.

but before doing this, did you boroscope the leak to be sure it's coming from the lines ?
 
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chef423

Private
Sep 28, 2023
40
17
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Agree. Those can be hard to push back. Also, they need to be fully seated before torqueing the screw back, if not it will go sideways and tear the o-ring.

You can use soapy wota or silicon grease, this will help.

but before doing this, did you boroscope the leak to be sure it's coming from the lines ?

Then that is exactly what's happening. I put the lines on first then put the turbos on the car. Attach all the lines, oil too.

Ill know 100% tmrw as I am pulling the front turbo.

(edited)
 
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