951 head problem,fix it or replace w/pix
11-28-2005, 10:02 PM
#1
Rennlist Member
Thread Starter
951 head problem,fix it or replace w/pix
well,after taking off my head (due to leaking headgasket)i finally decided to start cleaning up some parts.to my suprise i see a little bit of the head missing near the #1 combustion chamber.what could have caused this?can i even fix this?should i or get another head.i also had a question about my exhaust ports.do they look ok to you guys?it still seams to have the ceramic liner but i cant be 100% sure.and to that the friggin cam cover gasket wont come off,its like bonded to the head.please help,thanx
ps:exhaust ports are from left to right,first picture is #1.
ps:exhaust ports are from left to right,first picture is #1.
11-29-2005, 10:51 AM
#3
Depends on what you can get a core head for. If you can get it relatively cheap then replace it, otherwise repair it.
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11-29-2005, 11:59 AM
#5
Three Wheelin'
Corrosion of our aluminum heads is pretty common. It is the result of not using the proper aluminum-compatible antifreeze. Since that pitting is near the water jacket holes, I think that is your cause. I am not a machinist, but I understand that the solution is to weld in new metal to build up the area, then machine the head flat. Not a big deal if your head is going in for machining anyway.
11-29-2005, 05:28 PM
#7
Race Car
That looks like a casting flaw.
If the head gasket didn't fail in that spot before, I wouldn't be at all worried about it.
It is pretty far from the combustion chamber too.
As for the ceramic liners, the one in the first picture looks cracked, around the valve stem. BUt it's not that bad. Honestly, I would clean it up, have new seals and guides put in, and re-install.
If the head gasket didn't fail in that spot before, I wouldn't be at all worried about it.
It is pretty far from the combustion chamber too.
As for the ceramic liners, the one in the first picture looks cracked, around the valve stem. BUt it's not that bad. Honestly, I would clean it up, have new seals and guides put in, and re-install.
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11-29-2005, 06:29 PM
#8
Hey Man
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Originally Posted by shortyboy
well,after taking off my head (due to leaking headgasket)i finally decided to start cleaning up some parts.to my suprise i see a little bit of the head missing near the #1 combustion chamber.what could have caused this?can i even fix this?should i or get another head.i also had a question about my exhaust ports.do they look ok to you guys?it still seams to have the ceramic liner but i cant be 100% sure.and to that the friggin cam cover gasket wont come off,its like bonded to the head.please help,thanx
ps:exhaust ports are from left to right,first picture is #1.
ps:exhaust ports are from left to right,first picture is #1.
11-29-2005, 06:50 PM
#9
Addict
Rennlist Member
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WOW... that's a bad one!
Yep, Corrosion. Not from improper coolant, but from old CRAPPY coolant. I suppose the fancy coolant doesn't hurt, but I've never bought into that, and have no head problems on my or my customer's cars. The head can be welded and resurfaced. Not a big deal for a machine shop. If you can't find a donor head cheap, have that one redone. It should not be that big a deal.
Yep, Corrosion. Not from improper coolant, but from old CRAPPY coolant. I suppose the fancy coolant doesn't hurt, but I've never bought into that, and have no head problems on my or my customer's cars. The head can be welded and resurfaced. Not a big deal for a machine shop. If you can't find a donor head cheap, have that one redone. It should not be that big a deal.