Cylinder head combustion chamber flaws

[Canadian_CD9A]

I just unpacked a CBR head and found these flaws in the deck. I’m not sure how this damage could have happened (likely on the bench?), but I’m not sure the best way to deal with it. The head will obviously need a mill to correct the deck, but would you do anything to smooth or fill the nicks?

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[motomattx]

That should clean up just fine with a milling machine, it wouldn't be worth the expense of welding it up and then milling it.

 

[bastarddsm]

Look at all the valves... Was this sliding around in a gravel parking lot?

Lay a gasket on it and see what it looks like. If its inside the fire ring, smooth it out. If not, plan on finding a new head.

 

[Canadian_CD9A]

Look at all the valves... Was this sliding around in a gravel parking lot?

Lay a gasket on it and see what it looks like. If its inside the fire ring, smooth it out. If not, plan on finding a new head.

It was just dirty, it’s not thaaat bad. Here are updated photos, it looks awfully close to the ring. This head absolutely needs to be saved though, Curt Brown isn’t around to make another.

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[Cameron Morison]

as long as its not affecting the clamp area of the head gasket fire ring, Id just file the imperfection away and run it as-is. it would be a fraction of a CC in terms of volume so won't affect the running of the engine at all so long as the head gasket seal is not affected.

 

[1990TSIAWDTALON]

I would not resurface that head I would follow advice. It just needs to seal on the fire ring. Debur it lightly.

 

[Canadian_CD9A]

Thanks crew, I think that's the way we'll go. Cheers.