Small Engines (Lawn Mowers, etc.): 347 windsor hp leaking water into engine, head bolts, dart heads

Question
QUESTION: just got built a 535hp 347 windsor with cast dart heads on pump fuel started it the morning didnt sound well stop it pull the breather cap off saw milky oil engine 2 hrs old.when engine got first dyno he told me that 2 cylinders had water in them .so he pressure tested it .fine put it back 2gether ran again all fine.got engine home put it in got it runnen.only ran 3 times this time found water in tappet covers .will sparkplugs show any signs and waydoes it keep doen its been machined square block heads etc

ANSWER: Hello Bill:

Did you Use New Head Bolts? If the Water is Entering the Cylinder it will have a Miss on the Cylinder with the Water Leak when Running. If the Water and Oil are Mixing and the Engine is Not Missing, then the Head Gasket is Blown/Leaking Between the Oil and Water Ports. If you Did Not Use New Head Bolts, then Most Likely the Bolts Stretched and Allowed the Head Gasket to Blow/Leak Between the 2 Ports. From the Description of the Work Performed, it Sounds like the Head Bolts May be the Cause of the Problem. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting you Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.

Respectfully

John

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QUESTION: the engine has been built 3 times an only done about 15 hrs between 3 builds what a joke hay first build was all new parts arp top an bottom stud kits but used through all rebuilds not thinken that was a problem untill now. their 7;16 studs. would new studs same size work, engine has 11.5.1 comp flattops, an is their any strength arp out there that would handle that problem thanks

Answer
Hello Again Bill:

The 7/16 Studs are Good and Will have No Problem with the 11.5 to 1 Compression Ratio Provided they are for the Application. I have Raced a 1969 Chevelle SS with a 427 Built to 14.5 to 1 Ratio and had to Replace the Studs After Each Head Removal. If I Did Not Replace the Studs, I Would have a Blown Head Gasket in No Time At All. Im Not Sure What you Mean By Stud Kits. I haven't Use Kits, I Usually had to Special Order the Studs from the Local NAPA Automotive Parts Retailer. Talk to your Local Automotive Parts Supplier and Make Sure the Stud Kit you Used was for the High Compression Engines. The Studs for Todays Engines are Designed for Lower Cylinder Compression (most times 9.5 to 1 or less) and will Stretch when Used on a Higher Compression Engine. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.

Good Luck

Respectfully

John