Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

Water leak from hell

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Old May 26, 2008 | 01:30 PM
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Default Water leak from hell

I can't find a water leak and my snap-on pressure tester does not have a cap that fits my jegs radiator even though they say it uses a regular chevy radiator car, it doesn't. The water leak started when I put the old heads on then I got my new vortecs, water pump, intake, radiator hoses, had jegs warranty the radiator, new water neck and a new radiator cap and it still leaks. It looks like its coming from the front of the block but I cant see a crack, is there a way to test for it or something I can do that will make cracks show up?

Dan
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Old May 26, 2008 | 03:03 PM
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You have steel mr gasket head gaskets?

is there a way to test for it or something I can do that will make cracks show up?
Tear it down to the bare block and have a machine shop bake it and magnaflux it.
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Old May 26, 2008 | 06:24 PM
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No, I'm using felpro headgaskets, the blue ones.
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Old Jun 8, 2008 | 10:33 AM
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has the vortec heads been angled milled any.
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Old Jun 8, 2008 | 11:11 AM
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freeze plug?
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Old Jun 8, 2008 | 02:01 PM
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Add UV dye to the cooling system and use a black light, you'll find where its coming from. Otherwise you can attempt to magnaflux it in the car but that may be tough....
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Old Jun 9, 2008 | 12:55 PM
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How do you magnaflux it in the car?
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Old Jun 10, 2008 | 11:54 AM
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you did use new gaskets when you put on the vortecs? just checking the obvious first.
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Old Jun 10, 2008 | 08:26 PM
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Yes new gaskets.
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Old Jun 10, 2008 | 08:39 PM
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next, is the water coming from above or below the heads? may have broken the plastic gasket for thevortec intake gaskets. also look close at the water pump bolts, as the go staight into the water passage in the block.
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