Wow: I guess we'll have to call this customer with Pierce Arrow and tell him to throw the head away we've repaired.
Because stitching doesn't work?
> We will see how it is down the road a bit.
Actually stitching is the best means to repair old cast iron.
> That statement could get you in big trouble someday.
Example shown of someone trying to braze the crack only made it worse.
> That is generally very true. While brass will work in many cases, it is old
technology and not used too much any more.
We in turn cut out damaged area and made pieces fit them and then stitched them back in.
> I have stitched pieces 18 inches long and 10 inches wide in the side of
Caterpillar D8/D9 blocks where rods went through, and you could not tell it
had been repaired from the outside.
This was years ago.
> Likewise.
This head was attempted to be repaired and did more damage by adding heat to combustion chamber making areas brittle. Cut out damaged areas made pieces in the combustion chamber and car is still running without water leaks.
Yes We make a living repairing these so I may be slanted in our opinion but in our defense; stitching works and once painted only you know it's there.
> Many moons ago, I was the first employee of the now biggest diesel engine
repair facility in the world.
I would not paint a combustion chamber. Waste of good paint.
Think twice regarding welding.
> When a job came in I never had an opinion on it. I am qualified to look at it
and say it should be repaired a certain way.
I would have torch welded that head with cast iron rod. You couldn't tell it
had ever been repaired and no chance of any pins leaking down the road.
You are right though, if you don't know welding, you should not do it.
http://www.jandm-machine.com/metalStitching.html
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