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07-16-2010, 01:00 PM
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#1
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Bad head gasket?
So my brother bought a 1994 Z28 recently. Its got 67,2xx miles on it. Coolant light came on within the last week, and the temperature seems to rise pretty high for an LT1. Last night while it was running, it looked like smoke was pouring out from the passenger side exhaust manifold, couldn't really pinpoint it. Looked in the radiator a few minutes ago now that the engine is cold (sat overnight) and what was green coolant, now appears to have rust floating in it. Ill see if i can get a pic, for now not even going to chance turning it over, been down that road LOL
Any insight? Are we on the right track?
Thanks!
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1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick 
2014 2LT Cruze 2.0 Turbo Diesel
Last edited by FlyingDutchman; 07-16-2010 at 05:13 PM.
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07-16-2010, 01:22 PM
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#2
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Sound like it. See if the overflow tank is full?
Could try a compression test too.
How hot did it get? If you overheated it then you could have warped a head?
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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07-16-2010, 05:10 PM
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#3
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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By hot, not in the red, turned it off before then but def above the 235* where it should off stopped increasing. Ill go check the overflow tank and see whats up. Didn't notice coolant in the oil pan though
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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07-17-2010, 08:59 AM
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#4
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,677
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Do a leak down test and check for bubbles in the rad.
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John
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