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502 Exhaust Manifolds and Risers time

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Old 11-26-2016, 01:41 PM
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Originally Posted by sergeantnic
Well, looks like $2500 or so is the best I can do either way. Thanks for the help.

Do you know if I need the expansion plugs? Doesn't look like they are anything I can get out of the old ones so I was hoping they are already pre-installed.
The core plugs should come preinstalled
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Old 11-26-2016, 03:50 PM
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Originally Posted by AllDodge
The core plugs should come preinstalled
Thanks. I'll make a couple calls tomorrow to see if any of the aftermarket companies make a direct bolt up alternative for around the same price. Just doesn't make sense to me to drop $2600 + on the same cast iron crap if I can get something that will hold up longer for about the same price.
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Old 12-06-2016, 08:01 AM
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I've got a little corrosion on the mating surface where the manifolds mount up to. Can I put / should I put a little high temp RTV sealant on there before putting on my gasket and new manifold?

Also, should I be using anti-seize on the bolts?
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Old 12-06-2016, 12:32 PM
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Not a fan of RTV on a motor and really not in the exhaust area. I would wire brush and paint, but if they are deep then depending on how deep, suggest using some JB weld high temp and file flat.

Anti-seize would be good IMO
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Old 12-07-2016, 10:15 AM
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Originally Posted by AllDodge
Not a fan of RTV on a motor and really not in the exhaust area. I would wire brush and paint, but if they are deep then depending on how deep, suggest using some JB weld high temp and file flat.

Anti-seize would be good IMO
I keep hearing both ways on the RTV. I got everything nice a clean with a wire wheel and brake clean. The pitting is pretty shallow but you can definitely feel it. It's about the length of the exhaust port but only one and at the bottom.

I also heard the high tack copper spray is a good option. I just want to make sure I get a good seal and don't have to worry about this for another 3 or 4 years.
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Old 12-07-2016, 10:23 AM
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Can you post a pic?
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Old 12-07-2016, 10:47 AM
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Let me know if these don't show up.

https://photos.google.com/share/AF1Q...pkSGU1OVNqQVdB

https://photos.google.com/share/AF1Q...1xT3pVVVlReEtn
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Old 12-07-2016, 10:52 AM
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They showed up in the email but not here. Had a look at them and it appears to me that's left over gasket material. Take some 100 or 120 grit sand paper and see if it cleans up.
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Old 12-07-2016, 10:57 AM
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Photobucket should work
[IMG][/IMG]

[IMG][/IMG]
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Old 12-07-2016, 11:27 AM
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Originally Posted by AllDodge
Photobucket should work
[IMG][/IMG]

[IMG][/IMG]

I'll try some sandpaper but I'm fairly certain it is pitting from corrosion. Pictures just don't show it well.

Assuming it is not gasket material, same question as before. Will just the gasket suffice?
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