I recently broke a rocker arm on my 325ix so I pulled the head to replace them all and low and behold, the head had 3 hairline cracks in it as well 
.
That being said, I had to get a new head. I found one for sale and was told that it was in great condition and that it is a drop-in and go situation. I bought it for 330 bucks shipped and it was from a reputable guy on the tech.
However, upon recieve the head this is what I found....
Shows the sanding on the combustion chamber edges
Scratches by the dowel locations
Now to the bad stuff. Since I was going to get it machined, I decide that I would take it apart. Right off the bat, we noticed some big issues. The rocker shafts don't look right. The ends where clearly clamped or hit with something as there are large marking them. Also, the plugs at the ends are not correct, meaning that they look different than other heads I have taken apart. Also, there are vise grip marking toward the center of the shaft as well.
Then, we looked at the rockers.....no bueno
The cam pads are worn badly and will need to be replaced. Then, since the rockers were worn, the cam's also badly worn. There are deep grooves in the cam lobes and cam would have to be replaced as well. But the worst part of this I feel if the condition of the cam journals. I don't know what could have cause it but there are some serious groove in both the head and the cam shaft itself.
Don't know what happened here...
The rockers
Cam shaft - showing the grooving it the cam bearing surfaces
Here you can seen the wear on the lobes
journals in the head.
Basically, I want to know if this is actually ok to just "drop-in" or is it junk. The seller think that its fine but I am having a hard time buying it. I know that I have to get it machined flat, so I am not too worried about that. its the cam wear, rocker wear, journal wear, rocker shaft wear that worried me.
Let me know what everyone thinks
. That being said, I had to get a new head. I found one for sale and was told that it was in great condition and that it is a drop-in and go situation. I bought it for 330 bucks shipped and it was from a reputable guy on the tech.
However, upon recieve the head this is what I found....
Shows the sanding on the combustion chamber edges
Scratches by the dowel locations
Now to the bad stuff. Since I was going to get it machined, I decide that I would take it apart. Right off the bat, we noticed some big issues. The rocker shafts don't look right. The ends where clearly clamped or hit with something as there are large marking them. Also, the plugs at the ends are not correct, meaning that they look different than other heads I have taken apart. Also, there are vise grip marking toward the center of the shaft as well.
Then, we looked at the rockers.....no bueno
The cam pads are worn badly and will need to be replaced. Then, since the rockers were worn, the cam's also badly worn. There are deep grooves in the cam lobes and cam would have to be replaced as well. But the worst part of this I feel if the condition of the cam journals. I don't know what could have cause it but there are some serious groove in both the head and the cam shaft itself. Don't know what happened here...
The rockers
Cam shaft - showing the grooving it the cam bearing surfaces
Here you can seen the wear on the lobes
journals in the head.
Basically, I want to know if this is actually ok to just "drop-in" or is it junk. The seller think that its fine but I am having a hard time buying it. I know that I have to get it machined flat, so I am not too worried about that. its the cam wear, rocker wear, journal wear, rocker shaft wear that worried me.
Let me know what everyone thinks
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