Author Topic: Blew either head or intake gasket  (Read 8543 times)

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ChiefDanGeorge

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Blew either head or intake gasket
« on: March 14, 2017, 02:37:37 PM »
I'm still in the process of building new motor(I am slooowwww, paranoid of making mistakes) but the motor in the wagon blew either a head or intake gasket. Found water in the oil and the idle vibration is really bad.
I'd like to fix the issue, but I don't want to do any machining on the heads. Would it be ok just to pull heads and replace gaskets as a temp fix? I'm hoping this kicks me into finishing the other motor, but I really don't want to screw something up rushing.

Drew Pojedinec

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Re: Blew either head or intake gasket
« Reply #1 on: March 14, 2017, 03:24:05 PM »
Impossible to answer given the info you've provided.

If it was me.

-off with the valve covers.  inspect
-remove spark plugs.  inspect
-remove intake.  inspect
-finally get to the heads if nothing else seems obvious.

ChiefDanGeorge

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Re: Blew either head or intake gasket
« Reply #2 on: March 14, 2017, 03:30:09 PM »
Sorry about the sparse info. Was on way to work meeting and haven't had much chance to do anything worthwhile, Just checked the oil and saw the milky white mix and first guess was a head gasket gave out.

Impossible to answer given the info you've provided.

If it was me.

-off with the valve covers.  inspect
-remove spark plugs.  inspect
-remove intake.  inspect
-finally get to the heads if nothing else seems obvious.

machoneman

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Re: Blew either head or intake gasket
« Reply #3 on: March 14, 2017, 03:32:46 PM »
Compression test? Leak-down test? Could avoid a lot of work here it it;s just the intake gasket.
Bob Maag

unclewill

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Re: Blew either head or intake gasket
« Reply #4 on: March 14, 2017, 09:19:11 PM »
Removing the intake is a two hour job if you take your time.
Some tips to make it go faster:
Start draining the coolant first.
Clear a big table for parts.
Start at the top and work down.
Remove the brake booster and master cylinder.
Stuff the distributor hole with paper towels when you pull the intake and be ready to vac or soak up water from the intake valves and lifter valley immediately.

You can also remove one head at a time without disturbing the intake/carb/distributor, replacing all gaskets at once.  First 3 tips still apply.

1969 Ford Cobra, 482 side oiler, BBM aluminum heads, FiTech EFI, Edelbrock 7105, Comp 292H, CR 4 speed, 9", 3.50

Drew Pojedinec

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Re: Blew either head or intake gasket
« Reply #5 on: March 14, 2017, 10:13:31 PM »
Should be fresh in your mind eh UncleWill :P 

ChiefDanGeorge

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Re: Blew either head or intake gasket
« Reply #6 on: March 15, 2017, 04:46:00 AM »
Is there any check to do that would indicate the intake gasket is the one that failed and not a head gasket?

Drew Pojedinec

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Re: Blew either head or intake gasket
« Reply #7 on: March 15, 2017, 05:47:23 AM »
Easiest way to figure that would be to first remove valve covers.
Pressure up coolant system while looking with a flashlight into the lifter valley for any signs of water running or leaking.  This won't be the easiest thing to spot.

If you remove the intake, I'd think it'd be obvious if the gasket had failed.

Compared to many other engine types, head gasket failure isn't *really* a common problem with the FE.  Sure it happens, but I would say it's typically something else.

unclewill

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Re: Blew either head or intake gasket
« Reply #8 on: March 15, 2017, 08:44:26 AM »
Should be fresh in your mind eh UncleWill :P
Three times I've taken my intake off in the last two weeks!  I'm also getting really good at fishing out and replacing lifters with magnets.

One last tip - clean out ALL bolt holes before reassembly!  When a bolt hydraulics with oil, it will pull the threads right out - ask me how I know...
1969 Ford Cobra, 482 side oiler, BBM aluminum heads, FiTech EFI, Edelbrock 7105, Comp 292H, CR 4 speed, 9", 3.50

Falcon67

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Re: Blew either head or intake gasket
« Reply #9 on: March 15, 2017, 09:34:10 AM »
In my experience, if the decks were clean and the head gaskets new when installed, it's rare to have an issue.  Debris, contamination of the deck surface(s) or wrong bolt torque will cause an issue.  Head gasket issues will show up right off, they don't wait.  Intakes on the other had will lull you to sleep then ruin your day. ;) 

I have a Stant cooling system tester, bought off eBay.  It's the tool I use to pressure up and check engine/cooling system before ever sticking a motor in a car.  I was also just using it on the dragster cooling system for checks.  Id'd motor plate to pump gasket seal issues right off.  Worth every $ I paid for it.

ChiefDanGeorge

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Re: Blew either head or intake gasket
« Reply #10 on: March 15, 2017, 10:06:13 AM »
Motor is original to car(63 Colony Park) and never rebuilt to my knowledge.
In my experience, if the decks were clean and the head gaskets new when installed, it's rare to have an issue.  Debris, contamination of the deck surface(s) or wrong bolt torque will cause an issue.  Head gasket issues will show up right off, they don't wait.  Intakes on the other had will lull you to sleep then ruin your day. ;) 

I have a Stant cooling system tester, bought off eBay.  It's the tool I use to pressure up and check engine/cooling system before ever sticking a motor in a car.  I was also just using it on the dragster cooling system for checks.  Id'd motor plate to pump gasket seal issues right off.  Worth every $ I paid for it.

ericwevans

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Re: Blew either head or intake gasket
« Reply #11 on: March 15, 2017, 11:55:51 AM »
Should be fresh in your mind eh UncleWill :P
Three times I've taken my intake off in the last two weeks!  I'm also getting really good at fishing out and replacing lifters with magnets.

One last tip - clean out ALL bolt holes before reassembly!  When a bolt hydraulics with oil, it will pull the threads right out - ask me how I know...

Hope you're running an aluminum intake UncleWill and not being hard headed like me and continuing to run iron.   :P  I've had my intake off several times this year, the next time it comes off I'm buying an Edel.  :-)
Eric Evans

1965 F-100, 352 FE, Tremec 3550
1960 Falcon, 306 SBF

Joey120373

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Re: Blew either head or intake gasket
« Reply #12 on: March 15, 2017, 08:23:30 PM »
There is a way to test the head gasket, at least partially.
There are chemical tests available that look for cumbustion chamber gasses in the radiator.

Used to use them all the time back in the day when I wrenched for a living, fluid is blue, turns yellow if the head gasket is blown.

unclewill

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Re: Blew either head or intake gasket
« Reply #13 on: March 15, 2017, 09:08:47 PM »
Hope you're running an aluminum intake UncleWill and not being hard headed like me and continuing to run iron.   :P  I've had my intake off several times this year, the next time it comes off I'm buying an Edel.  :-)

Yea, it's aluminum.  I take the carb + intake off as a unit - don't try this with an iron intake!

Worst case scenario the wagon has a cracked block or head.  ChiefDanGeorge you should finish the new engine asap then swap.  Much easier than fixing the engine in the car then swapping anyway.
1969 Ford Cobra, 482 side oiler, BBM aluminum heads, FiTech EFI, Edelbrock 7105, Comp 292H, CR 4 speed, 9", 3.50

ChiefDanGeorge

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Re: Blew either head or intake gasket
« Reply #14 on: March 16, 2017, 07:44:18 AM »
No doubt. This is my first build so I end up questioning my work all the time.
Worst case scenario the wagon has a cracked block or head.  ChiefDanGeorge you should finish the new engine asap then swap.  Much easier than fixing the engine in the car then swapping anyway.