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BigBlocksRule · 01-15-2015, 08:33 AM

Put a few drops of soap in a spray bottle and fill with water. Spray in the chamber, use an air gun to pressurize the port. Watch for bubbles, just like with a tire.
All this shows is how well the valves seat. It won't show cracks in the chamber, etc. - have 'em magged!

01-15-2015, 08:33 AM	#9
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: Testing 454 Heads for Leaks with WATER? Put a few drops of soap in a spray bottle and fill with water. Spray in the chamber, use an air gun to pressurize the port. Watch for bubbles, just like with a tire. All this shows is how well the valves seat. It won't show cracks in the chamber, etc. - have 'em magged!