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HUGE PROBLEM! NEED HELP! #605325 02/05/10 08:09 PM 02/05/10 08:09 PM
Joined: Dec 2007 Posts: 284 Louisiana K kzinge1 OP enthusiast
kzinge1 OP enthusiast K Joined: Dec 2007 Posts: 284 Louisiana	I finally got my motor in and running. Freshly built 512 stroker with Stealth heads. We let it run for about 5 minutes, we set the timing, topped off the water and were checking things out, when we noticed water leaking out of one of the valve covers. We killed the motor, and pulled the dipstick. There was a milky fluid on the dipstick. We then pulled the pass. side valve cover and the head was full of water mixed with oil. We think that the block is probably cracked. We are hoping it is something simple like a head gasket, but I'm willing to bet it is the worst possible thing, a cracked block. I was wondering if there was any way to find out where thus think is leaking from. Any help is appreciated, I don't know want else to do.

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605326 02/05/10 08:12 PM 02/05/10 08:12 PM
Joined: Aug 2009 Posts: 2,058 Mooresburg, Tn ' '72CudaRacer top fuel
'72CudaRacer top fuel ' Joined: Aug 2009 Posts: 2,058 Mooresburg, Tn	Put a pressure tester on cooling system and put it under pressure. Pull valve covers and oil pan.look for were water is coming from?

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605327 02/05/10 08:13 PM 02/05/10 08:13 PM
Joined: Jun 2005 Posts: 2,776 Ontario Canada M MattW master
MattW master M Joined: Jun 2005 Posts: 2,776 Ontario Canada	Pull all the water out and seal one of the rad hoses and fill the other with presurized air it will bubble were it is leaking. Matt

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605328 02/05/10 08:15 PM 02/05/10 08:15 PM
Joined: Nov 2003 Posts: 440 SW pa G goldenlancer mopar
goldenlancer mopar G Joined: Nov 2003 Posts: 440 SW pa	pull the pan and pressurize the rad. to about 15 lbs . you are sure to find it.water will run out where it is cracked N/SS

Re: HUGE PROBLEM! NEED HELP! [Re: goldenlancer] #605329 02/05/10 08:31 PM 02/05/10 08:31 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH

Re: HUGE PROBLEM! NEED HELP! [Re: goldenlancer] #605330 02/05/10 08:32 PM 02/05/10 08:32 PM
Joined: Dec 2007 Posts: 284 Louisiana K kzinge1 OP enthusiast
kzinge1 OP enthusiast K Joined: Dec 2007 Posts: 284 Louisiana	How can I tell if it is a head gasket leaking or the block? Wouldn't the air come out of the oil pan either way? I had no water in the cylinders that I could tell.

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605331 02/05/10 08:38 PM 02/05/10 08:38 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: How can I tell if it is a head gasket leaking or the block? Wouldn't the air come out of the oil pan either way? I had no water in the cylinders that I could tell. Its a step by step procedure, test the engine all together as said above, if you dont see the leak then its time to pull the heads, once you do that you need plates to seal things off so you can pressure test EDIT What head gaskets are you using, Cometics are known to leak water Last edited by MR_P_BODY; 02/05/10 08:40 PM.

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605332 02/05/10 08:40 PM 02/05/10 08:40 PM
Joined: Aug 2007 Posts: 74 virginia T tigger1 member
tigger1 member T Joined: Aug 2007 Posts: 74 virginia	Are you using copper head gaskets? I had the same thing happen last year on a fresh 496. I switched to felpro and it worked. Twin turbo 440 72 barracuda

Post deleted by Defbob [Re: tigger1] #605333 02/05/10 08:48 PM 02/05/10 08:48 PM
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Re: HUGE PROBLEM! NEED HELP! #605334 02/05/10 08:56 PM 02/05/10 08:56 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: I don't see how, after just 5 minutes of run time, the top of both heads could be FULL of water, due to just a leaky head gasket. Maybe if he forgot to torque down the heads, but aside from that, that's an awful lot of water in 5 minutes from a leaky head gasket. Pull the heads and examine the head castings themselves and look for a porosity issue. I dont think he means it was pouring out of the breather but that it had a bunch of the milk shake up top because it cant fill right up UNLESS there are no returns for the oil

Re: HUGE PROBLEM! NEED HELP! #605335 02/05/10 09:02 PM 02/05/10 09:02 PM
Joined: Aug 2009 Posts: 2,058 Mooresburg, Tn ' '72CudaRacer top fuel
'72CudaRacer top fuel ' Joined: Aug 2009 Posts: 2,058 Mooresburg, Tn	A friend of mine had a stealth head crack after 4 passes. They replaced the head and said they had few that got out with bad castings. If you have a problem telling if it's a bad head or bad block, pull heads and stick a set of iron heads on and retest.

Re: HUGE PROBLEM! NEED HELP! [Re: MR_P_BODY] #605336 02/05/10 09:08 PM 02/05/10 09:08 PM
Joined: Dec 2007 Posts: 284 Louisiana K kzinge1 OP enthusiast
kzinge1 OP enthusiast K Joined: Dec 2007 Posts: 284 Louisiana	The gaskets are the Felpro 8519's. There was no milky fluid coming out of the breather, it was just sitting where the oil usually sits on top of the head. As for porosity, I don't think there is any, the heads never leaked on the 383 they came off of. The machine shop did machine the quench area of the head in the chamber about .040 to fix the mistake they made after they decked the block too much. I don't know if any water could leak through that area. The heads were torqued to 70 ft/lbs in three increments. I will double check the torque though. Have any if you guys ever had a freshly machined block leak like this? The shop I used said they checked everything before boring it out .065 over. I don't know if they could have missed a crack in the block.

Re: HUGE PROBLEM! NEED HELP! [Re: '72CudaRacer] #605337 02/05/10 09:10 PM 02/05/10 09:10 PM
Joined: Dec 2007 Posts: 284 Louisiana K kzinge1 OP enthusiast
kzinge1 OP enthusiast K Joined: Dec 2007 Posts: 284 Louisiana	Quote: A friend of mine had a stealth head crack after 4 passes. They replaced the head and said they had few that got out with bad castings. If you have a problem telling if it's a bad head or bad block, pull heads and stick a set of iron heads on and retest. Was the crack in the head obvious? Or did you have to do a test to find it?

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605338 02/05/10 09:23 PM 02/05/10 09:23 PM
Joined: Jul 2003 Posts: 1,062 Alberta, Canada 4 4004spd super stock
4004spd super stock 4 Joined: Jul 2003 Posts: 1,062 Alberta, Canada	My brother got a bad stealth head that filled his #8 cylinder with antifreeze. Ran about an hour before it started pouring out the exhaust! Anyways, it was replaced by the local 440 source dealer and no problems since.

Re: HUGE PROBLEM! NEED HELP! [Re: WILD BILL] #605339 02/05/10 11:03 PM 02/05/10 11:03 PM
Joined: Apr 2005 Posts: 1,880 USA Ron Silva top fuel
Ron Silva top fuel Joined: Apr 2005 Posts: 1,880 USA	I would not just pull the pan right away. I would drain the oil to see how much water you REALLY have when you drain it. If you have a lot of water lower the car down and leave the drain plug out of the pan. Now fill radiator completely full and put 15 pounds of air in top. You can use a compression tester with 3/8 hose or a special fixture. THEN if you get a steady stream of water out the pan you can investigate further. Make sure you did not raise the car or otherwise cause the pan to hold the water without revealing it right away. If you get a good flow of water then quit and drain the cooling system about 1/2 way and pull the intake. Make plates to block the water coming from the heads with fittings so you can vent that area and fill the cooling system again and air test again. THEN you can see if it is a head gasket leak or if the block is cracked somewhere on top. After that you are pulling the pan. If you do not get a good flow of water with an air test I might throw some block sealer in it or try retorqing th heads and give her another go. Ron. SRT DEMON ONE SEAT

Re: HUGE PROBLEM! NEED HELP! [Re: Ron Silva] #605340 02/05/10 11:14 PM 02/05/10 11:14 PM
Joined: Feb 2005 Posts: 20,206 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,206 PA.	If its a 440 block and he bored it .065 I hope he sonic checked the block first. That's pushing the limits. Did he mag the block? 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: HUGE PROBLEM! NEED HELP! [Re: pittsburghracer] #605341 02/06/10 01:33 AM 02/06/10 01:33 AM
Joined: Dec 2007 Posts: 284 Louisiana K kzinge1 OP enthusiast
kzinge1 OP enthusiast K Joined: Dec 2007 Posts: 284 Louisiana	The machinist told he checked everything, but he may not have. I guess I will find out soon enough, was causing this.

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605342 02/06/10 02:32 AM 02/06/10 02:32 AM
Joined: May 2007 Posts: 174 Oklahoma H hemiiroc member
hemiiroc member H Joined: May 2007 Posts: 174 Oklahoma	Pull the plugs,crank it over with the starter , and watch to see if water comes out of one of the plug holes.

Re: HUGE PROBLEM! NEED HELP! [Re: kzinge1] #605343 02/06/10 03:04 AM 02/06/10 03:04 AM
Joined: Jan 2003 Posts: 6,266 Renton Washington T Triple Threat master
Triple Threat master T Joined: Jan 2003 Posts: 6,266 Renton Washington	Quote: Quote: A friend of mine had a stealth head crack after 4 passes. They replaced the head and said they had few that got out with bad castings. If you have a problem telling if it's a bad head or bad block, pull heads and stick a set of iron heads on and retest. Was the crack in the head obvious? Or did you have to do a test to find it? This also happened to multiple people I know. -Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA

Re: HUGE PROBLEM! NEED HELP! [Re: Triple Threat] #605344 02/06/10 11:43 AM 02/06/10 11:43 AM
Joined: Jan 2005 Posts: 1,466 malvern, ohio 3 3ddart pro stock
3ddart pro stock 3 Joined: Jan 2005 Posts: 1,466 malvern, ohio	how much was the block decked? had a friend who chased a leak for quite awhile only to find that after deckingthe block the heads weren't pulling down enough because of gained lenghth of threads

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