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01-23-2013, 04:51 PM | #1 |
Scooby Newbie
Member#: 246452
Join Date: May 2010
Chapter/Region:
MAIC
Location: Carlisle, PA
Vehicle:2005 STI Silver |
Coolant washing cylinder out, please help
I had my 2.5 built for my '05 STI with many goodies to include sleeves, o-ringed, head studs, billet crank, forged pistons/rods, ect. The problem is that when the motor was started up coolant began spraying out the exhaust. We dropped the header to find cylinder 1 was being washed out, all water not by fuel. The shop has since been searching for the mystery leak with no idea. We are all stumped. Can anyone suggest anything? To be clear, the Cometic head gasket looks great, the sleeve is in its place, the head held on the pressure tester, and the studs are all fine. Scott
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01-23-2013, 05:24 PM | #2 |
Scooby Specialist
Member#: 238453
Join Date: Feb 2010
Chapter/Region:
NESIC
Location: CT
Vehicle:05 05 WRX Aspen White |
Did you have any port work done? Which machine shop installed the sleeves? How are they verifying that a sleeve did not drop? There are only a couple of places where coolant can enter the combustion chamber. And if this occurred at only an idle, it rules out lifting a head at high boost. My guess is a. someone got too aggressive while porting, or b. a sleeve dropped.
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01-23-2013, 05:33 PM | #3 |
Scooby Specialist
Member#: 316296
Join Date: Apr 2012
Location: Metro Detroit
Vehicle:2006 STIROID 10.5@131 on 29psi |
Who did the sleeves?
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01-23-2013, 05:33 PM | #4 | |
Scooby Newbie
Member#: 246452
Join Date: May 2010
Chapter/Region:
MAIC
Location: Carlisle, PA
Vehicle:2005 STI Silver |
Quote:
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01-23-2013, 05:59 PM | #5 |
Scooby Newbie
Member#: 246452
Join Date: May 2010
Chapter/Region:
MAIC
Location: Carlisle, PA
Vehicle:2005 STI Silver |
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01-23-2013, 07:09 PM | #6 |
Scooby Specialist
Member#: 182375
Join Date: Jun 2008
Chapter/Region:
SWIC
Location: Northern Nevada
Vehicle:2013 Sti World Rally Blue |
Edit nm. Sounds like you guys have the engine torn back down and nothing was obvious. Might be able to put a torque plate and pressurize it through the hole for the crossover to find a leak. Would be a pain though because of the holes in the block.
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01-24-2013, 02:14 AM | #7 |
Scooby Guru
Member#: 56203
Join Date: Feb 2004
Chapter/Region:
Tri-State
Location: south nj
Vehicle:00 RSTI Coupe Twin Scroll 2.5XTR EJ207 |
id make sure the heads werent over ported into a water jacket
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01-24-2013, 02:47 AM | #8 |
Scooby Newbie
Member#: 333602
Join Date: Sep 2012
Chapter/Region:
W. Canada
Vehicle:2012 STi DGM |
Cracked head perhaps? They don't show up until the head distorts when torqued down.?
Matt |
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