300/440/550 Is this PJS 550 head usable? (pics)

[sharkcus]

I bought a PJS head for a good price, but it looks a bit pitted. I know from my automotive experience that this would NOT fly on a car. It appears almost "pitted" at the top of the cyl but that could be a property of the metal and perfectly normal. Does it need to be almost "glasslike" on these to get a proper seal with a copper HG? Obviously I will clean it up and make it as smooth as possible, but it still seems a bit rough.

Here are the pics. I can take closeups or zoom in if required.

 

[Lake Erie Monster]

is that the one we keep giving back to eachother?

 

[sharkcus]

ya

 

[jetskiparts]

Send the head to a shop like Group K and have them clean it up, well worth the money for a great head.

The pitting is from when an engine lost a bearing and bounced pieces thru it, not from bad gas or something like that.

I have seen heads like this on running motors - a 550 is most a monster power engine anyway so what little oyu owuld lose from the pitting is not all that much but would be better if it was cleaned up.

 

[Polish jet pilot]

Yeah, clean it and deck it. Verify how many CC's it has - otherwise you might need to run race gas or mixture of it...