bigpaw

I got my head back from a valve job, and every surface is painted. Looks like it was painted before seat grinding and skimming head-gasket surface, but every other surface is coated. Is this going to effect sealing intake/exhaust manifolds, egr plate, fuel pump block plate, etc...? Should the paint be removed before assembly. Why would the head get painted?

justin_4runner

they paint it for looks, now depending on how good they cleaned the surface before they painted it, but if it was me i would remove it just to know that u are getting a good seal to the head and u wont have a problem later down the road with leaks,

GoOffRoad

Just clean the face/surface before install

bigpaw

Also does anyone know what this hole was drilled/plugged for?

cadman

That looks like the normal sand blasted and hot tanked finish, not paint.

justin_4runner

that should not be drilled all the way threw. most of the time the shop that did the work will put a item like that on to mark it as one that they did for any warranty
work that the customer might come back to them with. it should have numbers or something on it, that way they can identify it was there shop that did the work.

irab88

iTrader: (4)

x2. it's nice and clean

rub some acetone on it... if it looks the same, it's not painted

Drillin_guy

I had a plug like that on a head that I had machined and they told me it was basically a tattle-tail plug to see if the head got too hot if you try and warranty it...

GoOffRoad

If you overheat the engine that patch will fall off and will void the warranty.

GoOffRoad

Yeah you got it. Hey .. Im from sac too. Are there many from sac on these forums?..

bigpaw

My neighbor said the same thing about that thing I thought was a plug, that it falls off if it overheats/warranty thing. It does have numbers.

When I unpacked it I was hoping that it was just clean, but yeah, it's painted. Comes off with brake cleaner. They even painted the valve faces and then half-ass cleaned them later. Overspray on the springs...

I'm going to just clean the sealing surfaces with brake cleaner. Kind of ˟˟˟˟ that there's paint in the combustion chamber and spark plug threads.

I guess what pissed me off the most was shipping the old spark plugs in the same bag as the newly resurfaced head and all the resulting gouges on the headgasket sealing surface and exhaust manifold surface from the spark plugs rattling around. Why did I send it out with the spark plugs in the head?

scope103

Mine looked just like the poster's picture, but it turned out to be paint. (And I must say it looked really good!)

I didn't bother removing any paint, and I haven't had any sealing trouble.