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Location:
Sydney
Registered:
May 2002
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Help.....head gasket ?
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Sun, 01 June 2003 01:23
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Hey all
i took the cap of the radiator on my Corona (2.0L 2SC engine)
and theres milk....
so Oil's mixing with coolant
but i checked the dipstick very quickly.....and that seemed fine.....
so is it possible that Oil's getting in the coolant yet theres no coolant getting into the oil ?
If so how ?
Thanx
Mani
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 03:15
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I dont know much about the internal pipework of engines, but if the oil at one point is constantly at a higher pressure than the water, you'd get oil in the water but no water in the oil.
OR if oil gets to higher pressure than water (which I'm pretty sure it does) and there's only a TINY gap, then only the oil has enough pressure to be forced through
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Location:
Brisbane
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 03:24
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Yup, it's quite possible to have oil in the coolant and not the reverse, or vice-versa. It depends where the headgasket has blown and how bad it is.
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 08:00
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hmm....that actually makes sense
Now oil in the coolant is much less dangerous than coolant in oil right ?
So how do i go about reducing pressure in my cooling system so as to not root the engine
as im doing a conversion as long as the engine runs for about a year i dont care what condition its in
Would having nothing in the reservoir and sucking a TINY bit out from the radiator be an option ? ....as when the system tries to go under high pressure.....it compresses air....hence less pressure ???
Thanx
Mani
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 08:05
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the solution is not to reduce the pressure i your cooling system. if you try that (through the methods you mentioned above) you'll find that your engine will be running hot.
how long does it have to last before a conversion? you'd be amazed how long a car can limp along with a busted head gasket. but what will happen is one day you'll probably fry a cylinder, and then you'll have to do something about it
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 08:09
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Well when i took the radiator cap off last night.....there was already a bit of a gap from the top of the radiator....and obviously nothing in the reservoir....and the car has been running fine...so could it be an option ???
and i topped it up today ....and after hearing what u guys said about pressure i thought "uh oh" shouldnt have topped it up
the car has to last about a year like i said
i also have a postie that i can get to and work from
so at the most ill be using my corona 3 days a week MAYBE 4 days a week for about a year
Thanx Heaps
Mani
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Location:
Hornsby, N.S.W
Registered:
September 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 08:59
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heya mani, when did you buy the corona???
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:03
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about 2 weeks ago mate
gonna make myself a little sleeper
Ta
Mani
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Location:
Hornsby, N.S.W
Registered:
September 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:04
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sounds nice, would love to see it, what are you doing for work now???
justin
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:05
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mechanics apprenticeship mate
gonna be a while till i can save the money for it
Thanx
Mani
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Location:
Hornsby, N.S.W
Registered:
September 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:11
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yeah , thats great, i notice that you have been asking some very mechanical questions of late.
cheers man
take care
juzzo
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:13
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yeah its really interesting and getting rather into it ....as u can see from the Questions i ask ...which some ppl dont appreciate
if i hear the phrase "heard of a search engine before" im not gonna be happy
Ta
Mani
take it easy
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Location:
Hornsby, N.S.W
Registered:
September 2002
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Re: Help.....head gasket ?
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Sun, 01 June 2003 09:16
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catcha
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Location:
Perth
Registered:
May 2003
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Re: Help.....head gasket ?
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Sun, 01 June 2003 15:39
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For the overwhelming expense of the head gasket or a top set, would it not be safer just to change it?
It is unlikely that the water pressure will ever exceed the oil pressure. The cooling system pressure is set by the radiator cap at usually 8, 13 or 15 PSI dependent on the cap. Oil pressure is lowest at idle and should be at least 8 PSI, and unless the engine is boiling the pressure in the cooling system should also be below this. As soon as the engine rises above idle oil pressure generally jumps to 15 PSI plus depending on the condition of the engine. Not saying that this is justification for not changing the head gasket. Consider it would cost under 100 bucks to change prolly around $50-60 (with your experience - do it at work), and how much it would cost for a tow if it decides to die anyway (about 50 to 80 bucks)!?!?!?!?
Cheers.
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Mon, 02 June 2003 09:01
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yeah i just realised its pointless redicing water in the radiator as the pressure will rise and rise untill the 13 PSI is met anyway
hmm...yeah ill find out if the gasket is blown and ill prob replace it if it is
Thanx
Mani
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Wed, 04 June 2003 08:07
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What do u guys think of that "chemiweld" stuff ???
like i said....as long as it runs for a year ..
Ta
Mani
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Location:
Central Coast & Sydney
Registered:
September 2002
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Re: Help.....head gasket ?
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Wed, 04 June 2003 14:15
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Regardless of what ppl will say Chemiweld is a quick fix, but a great one. Sometimes it works, sometimes it doesn't.
If it does, your laughing cause it cost you bugger all.
If it doesn't, then it doesn't..
If Leak in the gasket is small enough, you might be ok. Make sure you follow the instructions exactly.
It's worth a try buddy
Ex apprentice..
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Location:
cambo
Registered:
May 2002
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Re: Help.....head gasket ?
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Thu, 05 June 2003 11:13
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CHEMIWELD *cough* >>Rough<< *cough* do it properly first time as a mechanic u should get mad discounts i got a head reco'd off a nissan N12 pulsar for $250 which includes welding the head ,$65 for a vrs kit a couple of hours on the weekend and presto finito.
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Location:
Sydney
Registered:
May 2002
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Re: Help.....head gasket ?
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Thu, 05 June 2003 11:58
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oh heck yeah doing the head gasket would be a piece of piss but
a) time consuming
b)im holding a bet against someone that with my careful driving i can go a year driving like this
if i properly warm up the car b4 driving and take it easy i reckon i should be sweet
which also brings up the issue of wtf is with the cold idling set at 2000 RPM !!!
pissing me off hard and cant be good for anything !!!
i need to find the cold idle screw
Ta
Mani
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