Y-Pipe Corrosion - Pitting

[ZLoftsgard]

Hi Everyone. I am working through VoD cleaning and while accessing/cleaning the Y-Pipe, I found some pitting on the two sealing surfaces that mate up with the block. I know this seals with an oring however I want to be positive I do not have leaks.
My plan is to have the two sealing flanges machined down equally just enough to clean the sealing area. I wanted to post and see if anyone else has performed this maneuver or has another idea on how to address this other than gasket maker or some of other sealant?

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[MrChocky]

For what it's worth, the standard vendor procedure here is The Right Stuff gasket maker. My situation was a mess since I had corrosion down two of the bolt holes.

If you get a new y pipe, which I had to, it'll be nicely machined.

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[ZLoftsgard]

Thanks for the advice!
Fortunately, I have a pipe that is salvageable. I am thinking that I could just remove a few 0.001" and be ok. Just enough to clean up the pitting.

I am planning to drop it off in the next day or so to a local machine shop.

[Bitsyncmaster]

Thanks for the advice!
Fortunately, I have a pipe that is salvageable. I am thinking that I could just remove a few 0.001" and be ok. Just enough to clean up the pitting.

I am planning to drop it off in the next day or so to a local machine shop.

That looks more like 0.010" or more but as long as both surfaces are parallel it should not be a problem.

[DMCMW Dave]

My plan is to have the two sealing flanges machined down equally just enough to clean the sealing area.

We get them machined. You can take off quite a bit since the other end is a rubber hose. If you look closely you will generally find that the pitting is outside the area that is sealed by the O-ring so in reality it doesn't take much to clean it up.

[ZLoftsgard]

Thanks for the feedback!
I will move forward with that plan!

[David T]

You can pressurize the cooling system before you put the intake manifold back on to make sure you have no leaks before you go through all of the work on the manifold and the fuel system.

[ZLoftsgard]

You can pressurize the cooling system before you put the intake manifold back on to make sure you have no leaks before you go through all of the work on the manifold and the fuel system.

That's a great point. I will be sure to pressurize and see if my work under the intake manifold is good before moving on. Thanks for the suggestion!