Albm&ctd
10-11-2004, 10:23 AM
On Mon, 25 Oct 2004 19:16:19 +1000, "Nat"
<nat2simREMOVETHIS@yahoo.com.au> wrote:
>
>"Albm&ctd" <alb_mandctdNOWMD@connexus.net.au> wrote in message
>news:2u19ukF24aldrU2@uni-berlin.de...
>> On Sun, 24 Oct 2004 12:41:12 +1000, "Nat"
>> <nat2simREMOVETHIS@yahoo.com.au> wrote:
>>
>>>I found out yesterday that I have cracked the head and was told by a few
>>>people that it cost around $1,000 to get it fixed.
>>>
>>>Does anyone know another around this cost at all?
>>>
>> How do you know it's cracked? The head must be removed to determine
>> that.
>
>Yes well thats the thing.
>While the mechanic was filling up mt radiator with water and coolent it
>started bubbling more of less straight away, and thats when he told me that
>I've cooked it.
He said cooked it, overheated to a point where the head may warp but
he didn't say the head was cracked. He would have needed x-ray vision
for that or if he did was just taking a guess.
>Although there is a disputer on whether he did it, because apparently if a
>head is cooked it has oil mixed with water??? Or something like that?
No, not always water in the oil. A warped head may allow combustion
pressure to enter the cooling system and coolant into the cylinders
when at rest = also bad. If you find it's losing water then it's time
to get it fixed. The mechanic should have been able to pressure test
the cooling system after fitting the hose. Most workshops have a pump
up pressure testing device that attaches to the radiator filler neck
(where the cap normally goes). It has a gauge to observe whether the
pressure is dropping off, either external or internal leaks can be
found this way. Some also have another tool that detects combustion
gasses in the cooling system. To put your mind at rest (or worry you)
both of these tests should be done.
>
>Anyway, when I first got it there it was really hot, and the water was
>leaking out everywhere because there was aplit hose, anyways he didn't turn
>the engine on to put the water into the radiator, so he could have done it
>also???
If it was the bottom radiator hose you would have lost most of the
coolant, if the top radiator hose there would possibly be enough
coolant left to avoid damage depending on how far you drove like this.
I guess the guy fitted a new hose when the engine cooled off enough
for him to work on it, then filled the coolant. It's best to let the
engine cool off, not too hot to hold your hand on it before adding
coolant. If the engine is started without coolant the waterpump is
running dry and could damage it's seal.
>
>I dunno, it's seems to be running alright though.
>
These engines have a nasty habit of warping the head when overheated.
You may get away with the head being retorqued (head bolts
retightened) but it is likely that some warpage has occurred and it
will need work in future, surfacing and a new head gasket fitted,
minimum if you're lucky. When the head warps the leak occurs across
the head gasket and that piece of gasket can blow out. One thing in
your favour, it still runs and appears to be running OK.
All this explaining, I'm starting to sound like Nod.
Al
2004 insult page awaits your contribution
http://kwakakid.cjb.net/insult.html
*Inept dysfunctional descendants of Sloths*
are setting ridiculously low speed limits
<nat2simREMOVETHIS@yahoo.com.au> wrote:
>
>"Albm&ctd" <alb_mandctdNOWMD@connexus.net.au> wrote in message
>news:2u19ukF24aldrU2@uni-berlin.de...
>> On Sun, 24 Oct 2004 12:41:12 +1000, "Nat"
>> <nat2simREMOVETHIS@yahoo.com.au> wrote:
>>
>>>I found out yesterday that I have cracked the head and was told by a few
>>>people that it cost around $1,000 to get it fixed.
>>>
>>>Does anyone know another around this cost at all?
>>>
>> How do you know it's cracked? The head must be removed to determine
>> that.
>
>Yes well thats the thing.
>While the mechanic was filling up mt radiator with water and coolent it
>started bubbling more of less straight away, and thats when he told me that
>I've cooked it.
He said cooked it, overheated to a point where the head may warp but
he didn't say the head was cracked. He would have needed x-ray vision
for that or if he did was just taking a guess.
>Although there is a disputer on whether he did it, because apparently if a
>head is cooked it has oil mixed with water??? Or something like that?
No, not always water in the oil. A warped head may allow combustion
pressure to enter the cooling system and coolant into the cylinders
when at rest = also bad. If you find it's losing water then it's time
to get it fixed. The mechanic should have been able to pressure test
the cooling system after fitting the hose. Most workshops have a pump
up pressure testing device that attaches to the radiator filler neck
(where the cap normally goes). It has a gauge to observe whether the
pressure is dropping off, either external or internal leaks can be
found this way. Some also have another tool that detects combustion
gasses in the cooling system. To put your mind at rest (or worry you)
both of these tests should be done.
>
>Anyway, when I first got it there it was really hot, and the water was
>leaking out everywhere because there was aplit hose, anyways he didn't turn
>the engine on to put the water into the radiator, so he could have done it
>also???
If it was the bottom radiator hose you would have lost most of the
coolant, if the top radiator hose there would possibly be enough
coolant left to avoid damage depending on how far you drove like this.
I guess the guy fitted a new hose when the engine cooled off enough
for him to work on it, then filled the coolant. It's best to let the
engine cool off, not too hot to hold your hand on it before adding
coolant. If the engine is started without coolant the waterpump is
running dry and could damage it's seal.
>
>I dunno, it's seems to be running alright though.
>
These engines have a nasty habit of warping the head when overheated.
You may get away with the head being retorqued (head bolts
retightened) but it is likely that some warpage has occurred and it
will need work in future, surfacing and a new head gasket fitted,
minimum if you're lucky. When the head warps the leak occurs across
the head gasket and that piece of gasket can blow out. One thing in
your favour, it still runs and appears to be running OK.
All this explaining, I'm starting to sound like Nod.
Al
2004 insult page awaits your contribution
http://kwakakid.cjb.net/insult.html
*Inept dysfunctional descendants of Sloths*
are setting ridiculously low speed limits