Blown headgasket?
07-02-2014, 01:57 PM
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Blown headgasket? So I've been in the process of changing out my clutch in my lt1. While having the transmission out I decided to finally figure out this coolant leak I've been chasing. Well I did a pressure test and noticed bubbling on the rear of my passenger head. So I'm assuming i have a bad head gasket although the car really doesn't smoke or drive bad. Anyway, I ordered some felpro 1074's and intake gaskets. Is there anything else I'm missing that I need before tackling the job?
07-02-2014, 02:28 PM
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Providing the bubbling/leak wasn't coming from the crossover tube (steam tube) banjo bolt, and actually from the head to block mating surface I'd second the gasket assumption. With it bubbling to the outside would precisely explain why it wasn't affecting the drivability. An outward leak from coolant passage to outside of block would not affect anything at all except coolant level. No increase in pressure, no white smoke, no miss. Those would all indicate an inward leak from passage to cyl or cyl to passage. A passage to oil galley or galley to passage leak would show as milky coolant or oil, or both. And yes, leaks often flow one way and not the other.
07-02-2014, 05:59 PM
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Providing the bubbling/leak wasn't coming from the crossover tube (steam tube) banjo bolt, and actually from the head to block mating surface I'd second the gasket assumption. With it bubbling to the outside would precisely explain why it wasn't affecting the drivability. An outward leak from coolant passage to outside of block would not affect anything at all except coolant level. No increase in pressure, no white smoke, no miss. Those would all indicate an inward leak from passage to cyl or cyl to passage. A passage to oil galley or galley to passage leak would show as milky coolant or oil, or both. And yes, leaks often flow one way and not the other.
