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MBC leak and TB seal question

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Old Feb 19, 2011, 05:29 AM
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MBC leak and TB seal question

Hi, i have a Hallman MBC and when i do a boost leak test it have a huge amount of air coming from the pin hole of the MBC...Some say its normal some say its not. I want to know the real answer please.

I have a other boost leak on my TB seals, did someone ever try some ''universal'' o-ring with sucess (same size than OEM) or the only ones that fit well is the OEM ones?

Thanks
Old Feb 19, 2011, 06:37 AM
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not sure on the hallman but milspec sells seals to fix your tb
Old Feb 19, 2011, 06:49 AM
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When you perform a boost-leak test you are supposed to cap off the vac. hose going from wastegate/mbc . Thats why it's leaking lol
Old Feb 19, 2011, 08:00 AM
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Ok MBC problem solved (replace the 2 O-ring behind the 2 nipples and opened the MBC to clean inside)

For the TB seal i will order OEM ones it would be working

Thanks for the fast reply's!
Old Feb 19, 2011, 09:44 AM
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Your going to order OEM tb seals? There is no point in doing that because they leak from the factory.. get the Milspec Tb seals.
Old Feb 19, 2011, 12:06 PM
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Don't waste your money on OE seals, they're just going to leak again eventually. Like the poster said above me, go with the mil-spec shaft seals and don't look back. It's around $20 for both seals and they are made 10x better than the OE ones.
Old Feb 19, 2011, 12:08 PM
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tighten the hallman down when you do a boost leak test and it wont leak
Old Feb 19, 2011, 01:00 PM
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Ok thanks fot the tips
Old Feb 19, 2011, 01:07 PM
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Mil.Spec for sure on the TB seals, the OEM ones are worthless.
Old Feb 19, 2011, 01:09 PM
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Originally Posted by Kracka
Mil.Spec for sure on the TB seals, the OEM ones are worthless.
60 000 miles are not too bad for OEM... But yeah i will go Mil spec for sure




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