Would you put THIS cylinder head on YOUR engine?
07-08-2012, 10:48 AM
#1
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Would you put THIS cylinder head on YOUR engine?
Alright,
I bought this cylinder head last week, and it arrived a couple days ago:
https://www.miataturbo.net/miata-par...-%24100-66768/
It is cracked, and I was planning on having a professional fabricator from work weld it back up. But, when I took it apart to clean it, I noticed that the cylinder #2 cam bearing was destroyed. All the other cam caps show signs of embedded particle damage, but the #2 exhaust is toast - with both the cylinder head and camshaft being damaged.
So, quoting the seller from a PM he sent me:
"I jsut talked with my mechanic. He said the head should still run fine after the cracked is fixed. In fact, the head had been running in my car for a year. I had no problem with it. at this point, since the head could still run fine after cracked is fixed, i would not accept return."
So, ignoring the crack in the cylinder head - would you put THIS cylinder head on YOUR engine?
I bought this cylinder head last week, and it arrived a couple days ago:
https://www.miataturbo.net/miata-par...-%24100-66768/
It is cracked, and I was planning on having a professional fabricator from work weld it back up. But, when I took it apart to clean it, I noticed that the cylinder #2 cam bearing was destroyed. All the other cam caps show signs of embedded particle damage, but the #2 exhaust is toast - with both the cylinder head and camshaft being damaged.
So, quoting the seller from a PM he sent me:
"I jsut talked with my mechanic. He said the head should still run fine after the cracked is fixed. In fact, the head had been running in my car for a year. I had no problem with it. at this point, since the head could still run fine after cracked is fixed, i would not accept return."
So, ignoring the crack in the cylinder head - would you put THIS cylinder head on YOUR engine?
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07-08-2012, 11:25 AM
#4
Sorry, I do not have a dog in this fight but I deal with heads daily.
I have heads in my scrap pile with less cam tower damage.
There is not enough material left in the cam tower picture for a align hone or bore.
The cost to have it align honed would cost more than the head is worth
I would concider this a parts head at this point, pull the valves and springs and send the head casting to the scrap yard to be recycled.
If the seller reads this, I would have to say the mechanic did not see this damage, or if he did he is a fool. (also the short block this head came off should be pulled apart and have the oil galleys cleaned, and the oil pump inspected for metal trash and debris )
This is just my .02 cents
I have heads in my scrap pile with less cam tower damage.
There is not enough material left in the cam tower picture for a align hone or bore.
The cost to have it align honed would cost more than the head is worth
I would concider this a parts head at this point, pull the valves and springs and send the head casting to the scrap yard to be recycled.
If the seller reads this, I would have to say the mechanic did not see this damage, or if he did he is a fool. (also the short block this head came off should be pulled apart and have the oil galleys cleaned, and the oil pump inspected for metal trash and debris )
This is just my .02 cents
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07-08-2012, 11:45 AM
#5
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Not with that much damage.
+1
Sorry, I do not have a dog in this fight but I deal with heads daily.
I have heads in my scrap pile with less cam tower damage.
There is not enough material left in the cam tower picture for a align hone or bore.
The cost to have it align honed would cost more than the head is worth
I would concider this a parts head at this point, pull the valves and springs and send the head casting to the scrap yard to be recycled.
If the seller reads this, I would have to say the mechanic did not see this damage, or if he did he is a fool. (also the short block this head came off should be pulled apart and have the oil galleys cleaned, and the oil pump inspected for metal trash and debris )
This is just my .02 cents
I have heads in my scrap pile with less cam tower damage.
There is not enough material left in the cam tower picture for a align hone or bore.
The cost to have it align honed would cost more than the head is worth
I would concider this a parts head at this point, pull the valves and springs and send the head casting to the scrap yard to be recycled.
If the seller reads this, I would have to say the mechanic did not see this damage, or if he did he is a fool. (also the short block this head came off should be pulled apart and have the oil galleys cleaned, and the oil pump inspected for metal trash and debris )
This is just my .02 cents
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07-08-2012, 11:50 AM
#6
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Yea. I bought one from a local guy that looked about like that. I trashed it and bought another. Before I bought the next one I had the guy take the cam caps off and send me pics. You could weld the journal up and then have it line honed / bored but you would need to find a new cam. Buy the time you were done with that you would have WAY more in it that it was worth.
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07-08-2012, 02:04 PM
#9
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Here are some pics from under the camshaft:
As you can see, the oil supply port for the cam bearing is covered up with mangled aluminum, so I assume this was going to be catastrophic soon.
Also note the scoring on the #3 exhaust cam bearing.
As you can see, the oil supply port for the cam bearing is covered up with mangled aluminum, so I assume this was going to be catastrophic soon.
Also note the scoring on the #3 exhaust cam bearing.
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