blown head gasket
#76
I thought you were refering to that thing for the heater that has a seal, but I think its on the passenger side ?(let me go look) I realliy did not know what was VC standing for.
but yes the cam cover seals were changed.
but again when that turning problem happened there were
no coolant in the engine
no B-12 was used until before the intake was getting ready to go on. the B12 was used 3 weeks ago. the turning problem happened more than 2 months ago.
#78
then right after my finals finished I took the valve covers off.
after that I spend a whole week in winter break (this was the same week when it was Xmas) cleaning and spray painting the intake and cam covers.
I was not planning to do the timing belt change but I thought what the heck the car is not running anyways and I was waithing for more than a month on knock sensors so I went ahead and took the front apart. and installed the timing belt at the second week of school which was still January.
but it all makes sense now if the engine did not want to turn for some reason before TDC which is the same time #8 is in compression stroke, something was preventing # 8 to go up so it probobly took it on the HG which I dont think so or the cylinder wall. when it made the loud sound.
I dont think the loud sound was from the HG it was probobly a chunk of #8's cylinder wall.
it all makes sense now but what the hell was preventing #8 to do its compression stroke ???? no coolant no B-12 at that time so what was it?? water coming from outside ? but each port was covered with 3 layers of napkin.
#79
Valve was open and it snapped on the loud pop, then on start up it tossed it through a cylinder wall? At 45 degree BTDC you can crank the cams around any way you want to, but if the cams are not at the right angle, you've got a valve open when the crank was cranked.
Guessing here, but I'm willing to bet I'm correct.
Guessing here, but I'm willing to bet I'm correct.
#80
Now we're getting there.............the intake was off for 3-4 months and the car is outside? Are the napkins water proof?
The reason why you have the issue may never be known as the engine has been started and the issue may have been blown out the tailpipe.
Dealing with the facts and moving forward I'd advise moving the car to eliminate the landlord issue then have a local (Sean/ Roger) 928 experienced guy look and advise. Difficult to do over the internet but I believe we've got to the point wher we need to dismantle the engine to further the investigation.
Good luck and be thankful its not -25C.............I cant even touch my tools let alone work on the car
The reason why you have the issue may never be known as the engine has been started and the issue may have been blown out the tailpipe.
Dealing with the facts and moving forward I'd advise moving the car to eliminate the landlord issue then have a local (Sean/ Roger) 928 experienced guy look and advise. Difficult to do over the internet but I believe we've got to the point wher we need to dismantle the engine to further the investigation.
Good luck and be thankful its not -25C.............I cant even touch my tools let alone work on the car
#81
LOL I cant imagine working on my car under freezing point outside.
But Shawn I checked and rechecked all the marks on the cam gear matched even after the loud pop sound.
we will see when I get inside the engine.
the napkins are just the regular ones the Kleenex brand.
But Shawn I checked and rechecked all the marks on the cam gear matched even after the loud pop sound.
we will see when I get inside the engine.
the napkins are just the regular ones the Kleenex brand.
#82
Valve was open and it snapped on the loud pop, then on start up it tossed it through a cylinder wall? At 45 degree BTDC you can crank the cams around any way you want to, but if the cams are not at the right angle, you've got a valve open when the crank was cranked.
Guessing here, but I'm willing to bet I'm correct.
Guessing here, but I'm willing to bet I'm correct.
#83
Supercharged
Rennlist Member
Rennlist Member
Joined: May 2002
Posts: 18,925
Likes: 65
From: Back in Michigan - Full time!
#84
Namas,
Don't get discouraged. There are people near you including me that can help you get your car back on the road. I suggest taking the manifold off first and take a look around the intake port on that cylinder. Also make sure both intake valves are intact on cylinder #8 because you will be able to see them at this point.
I think if the block were broke/cracked, you would be seeing a massive amount of water in the oil not just the milky residue you are seeing which could be condensation from sitting outside so long. The coolant would be running into the oil pan or at least seeping in from a crack and not pouring out the spark plug hole.
Lets get the manifold off first and we can all take a look.
Don't get discouraged. There are people near you including me that can help you get your car back on the road. I suggest taking the manifold off first and take a look around the intake port on that cylinder. Also make sure both intake valves are intact on cylinder #8 because you will be able to see them at this point.
I think if the block were broke/cracked, you would be seeing a massive amount of water in the oil not just the milky residue you are seeing which could be condensation from sitting outside so long. The coolant would be running into the oil pan or at least seeping in from a crack and not pouring out the spark plug hole.
Lets get the manifold off first and we can all take a look.
#85
I will take the intake off today if I get time. the intake valves did not looked bent on # 8 before the intake installation they looked very good.
honestly, yesterday my friend was saying part it out but Im really thinking of a good used engine right now. who has experience buying engines from one of the sponsors ?
I just went check the oil and there was noting but oil on the stick. however, it looks like the oil level has increased, oil sits on top of water, don’t know about antifreeze, I would not know how much antifreeze is in there unless I drain the oil.
man, it looks like someone kicked my front bumper really hard I just notice it yesterday.
honestly, yesterday my friend was saying part it out but Im really thinking of a good used engine right now. who has experience buying engines from one of the sponsors ?
I just went check the oil and there was noting but oil on the stick. however, it looks like the oil level has increased, oil sits on top of water, don’t know about antifreeze, I would not know how much antifreeze is in there unless I drain the oil.
man, it looks like someone kicked my front bumper really hard I just notice it yesterday.
Last edited by namasgt; 02-27-2009 at 06:25 PM.
#86
Man you are brave. I have done countless maintenance on my 928(s) and I have never had anything go terrible wrong (mm, engine gaskets, powder coating, SC install, TB change, etc etc etc). Me, I would not dare to remove the heads myself. If I had Roger living close to me, I would rather pay him to do it then risking of messing the engine up. Based on the question that you asked ealier in this thread, you should have someone that is experienced looking at fixing the issue. The more you thinkering the more expensive it may get. The engine may still be fixable at this point. Have someone else look at the engine.
#87
Oh man, this thread is giving me nightmares. I'm in the middle of an intake refresh myself and I could see something like this happening to me. It shows how easily a catastrophic mistake can occur.
Stories like this give me a sinking feeling in my gut. But they do teach me everytime I read them.I will be double checking for any coolant or debree in the intake and will be pulling plugs to check in each cylinder as well.
I hope this story has the best possible outcome. Good luck. At least you have a fantastic support network down there. I'll be rooting for you from up here.
Stories like this give me a sinking feeling in my gut. But they do teach me everytime I read them.I will be double checking for any coolant or debree in the intake and will be pulling plugs to check in each cylinder as well.
I hope this story has the best possible outcome. Good luck. At least you have a fantastic support network down there. I'll be rooting for you from up here.
#88
We need to get your car away from there and somewhere we can work on it. You can go ahead and pull the intake if you want, since it will have to be done anyway. That will also allow you to at least see the valves and if there is an issue there.
I just hope and pray that I never catch anybody kicking my car. On the other hand, if my car was going to get kicked, I hope I see the person doing it.
Darwin Award recipient right there.
I just hope and pray that I never catch anybody kicking my car. On the other hand, if my car was going to get kicked, I hope I see the person doing it.
Darwin Award recipient right there.