WTF? Intake manifold crud

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Carlton Huitt

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I removed my intake manifold and found the last two passages packed in rust. What does this mean?? Do I have to heap the engine? What can I do? This gets fun at some point right?
 
Snoots

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Eww!
Crud in the water passages. Hot tank it.
 
QBuff02

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Pretty standard for an engine that the cooling system wasn't properly cared for over the years to have build up like that at the rear coolant passages. There's a sort of road block since the rear passages are blocked off by the intake and don't go anywhere. That's where your worst offenders will be. What are your plans? Are you just resealing the top of the engine? Or Pulling it all the way down? When you go back together be sure to put some Permatex ultra grey around the water ports before installing the gaskets and intake to fight off any potential leaks where it gets corroded around the sealing surfaces.
 
Carlton Huitt

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QBuff02 said:
Pretty standard for an engine that the cooling system wasn't properly cared for over the years to have build up like that at the rear coolant passages. There's a sort of road block since the rear passages are blocked off by the intake and don't go anywhere. That's where your worst offenders will be. What are your plans? Are you just resealing the top of the engine? (Yes. I was going to replace the intake manifold. They ran a bolt through the intake body where you mount the thermostat.) Or Pulling it all the way down? When you go back together be sure to put some Permatex ultra grey around the water ports before installing the gaskets and intake to fight off any potential leaks where it gets corroded around the sealing surfaces.
Click to expand...
 
Carlton Huitt

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Snoots. Don’t laugh but what is hot tank?
 
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:lol::rofl::rotflmao::Big Laugh::dogpile::happy175::happy175::gathering::roflbow:

Who me? I'm not Snooter.

It's a big ass tank of scalding hot water... with caustic in it. Your local engine builder will have one.
 
Carlton Huitt

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WBuff02

sorry. Just one more question. Do you mean put the Grey on the flat mating surface of the head? Or put the grey around the inside edge of the water port and use Red on the mating surface? Thanks for your time.
 
Snoots

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shiftpro said:
:lol::rofl::rotflmao::Big Laugh::dogpile::happy175::happy175::gathering::roflbow:

Who me? I'm not Snooter.

It's a big ass tank of scalding hot water... with caustic in it. Your local engine builder will have one.
Click to expand...

What he said. But I ain't laughing.
 
Snoots

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Carlton Huitt said:
WBuff02

sorry. Just one more question. Do you mean put the Grey on the flat mating surface of the head? Or put the grey around the inside edge of the water port and use Red on the mating surface? Thanks for your time.
Click to expand...

Meh. Forget the extra sealant and only use Fel-Pro gaskets.

Follow the proper torque sequence and specs when reassembling. Cleaning the threads of the bolts before-hand will be a BIG help.
 
Snoots

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Maybe this will help . . .

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Craig 85

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Make sure to thoroughly clean out the EGR ports in the intake. I know mine were plugged full of crud.
 
Snoots

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If you don't want/need the EGR, cut a piece of 1/4" aluminum and bolt it on in place of the EGR. And use a new gasket.
 
Carlton Huitt

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Very cool! I appreciate you all. Thanks! I’m so afraid I’m going to start the engine and discover a leak.
 
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