Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

EL header to up pipe condensation leak? HELP!!!

Old May 22, 2015 | 02:21 PM
  #1  
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EL header to up pipe condensation leak? HELP!!!

guys,

i just changed out my header and up pipe gaskets.
at cold starts i have a small amount on condensation that leaks from my header where it meets my up pipe. its not coolant for sure but its a little hard to smell. so i know its not E85. i do not have any fuel leaks. maybe just a bad gasket? there is not a exhaust leak either.

has anyone else experienced this before ?
maybe a new gasket or or some type of hi temp sealant i can use?
thank you guys
Old May 22, 2015 | 05:12 PM
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Fluid color? Pics may help. Mods list (you mentioned E85, so your not stock...)?

Can you capture some on a clean paper towel and smell, etc.?

you don't need sealant, you need to find out where this fluid is coming from. Could be coolant from the oil cooler right there by the manifold and UP.
Old May 25, 2015 | 07:38 PM
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Originally Posted by oaklandish_WRX
Fluid color? Pics may help. Mods list (you mentioned E85, so your not stock...)?

Can you capture some on a clean paper towel and smell, etc.?

you don't need sealant, you need to find out where this fluid is coming from. Could be coolant from the oil cooler right there by the manifold and UP.
It looks and smells like water. The fluid is clear. I changed my coolant to the new subaru blue coolant so I know it's not coolant at all.
Old May 25, 2015 | 08:40 PM
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Either the flanges aren't sealed (bent flange and/or poorly seated gasket) or there is a crack in either the pipes or welds at the flanges.
Old May 26, 2015 | 10:09 AM
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Originally Posted by Rev. Rob Large
Either the flanges aren't sealed (bent flange and/or poorly seated gasket) or there is a crack in either the pipes or welds at the flanges.
thank you i will look into this.

i ordered a new gasket. i never had this issue below with my set up. i do not see any cracks at all. i know sitting over night might blow up some condensation but shouldn't leak from the header to up pipe.
thank you guys. i do not see any other issues. no exhaust leak or boost issues at all
Old May 26, 2015 | 01:33 PM
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If the flanges are true and the gasket is bueno then what I've found is that the order in which I tighten the connections makes a difference. This is typically what I do.

Mani- UP
UP-turbo
Mani-Heads

Good luck!
Old May 26, 2015 | 01:53 PM
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Originally Posted by vaj
If the flanges are true and the gasket is bueno then what I've found is that the order in which I tighten the connections makes a difference. This is typically what I do.

Mani- UP
UP-turbo
Mani-Heads

Good luck!
thank you. i would try that if i was going to replace all the gaskets again.
any order i should tighten down the head to up pipe? its simple i know i have done this many times before without an issue. so i hope its just a bad freak gasket.
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