Cooling problems saga... Solved!! (At last!)
22 August 2001, 08:20 AM
#2
glad to see your car is all sorted now!! Mine is still having a problem with the heating, so perhaps my head gasgot has gone?
What type of car is yours? sti5? so like mine (wrx sti version iv type-r coupe) we would of already had the uprated sti head gasgot..
did they have any idea on why it went?
What type of car is yours? sti5? so like mine (wrx sti version iv type-r coupe) we would of already had the uprated sti head gasgot..
did they have any idea on why it went?
22 August 2001, 08:54 AM
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by R19KET:
<B>Leigh,
And maybe even a thanks to Steve Lawson, who suggested head gaskets before Scoobyboy ??
Mark.[/quote]
Thanks for correcting me. Well done!
I did say thanks to everyone, but sorry Steve! That ok for you Mark? 
Christian, mine is just a WRX, not an Sti. As to why it went, they couldn't really say. Maybe just one of those things? Head gaskets can fail on any car, maybe mine had been messed about with in Japan before being returned to standard(ish) for export.
<B>Leigh,
And maybe even a thanks to Steve Lawson, who suggested head gaskets before Scoobyboy ??
Mark.[/quote]
Thanks for correcting me. Well done!
I did say thanks to everyone, but sorry Steve! That ok for you Mark? Christian, mine is just a WRX, not an Sti. As to why it went, they couldn't really say. Maybe just one of those things? Head gaskets can fail on any car, maybe mine had been messed about with in Japan before being returned to standard(ish) for export.
22 August 2001, 12:13 PM
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Leigh,
And maybe even a thanks to Steve Lawson, who suggested head gaskets before Scoobyboy ??
Mark.
And maybe even a thanks to Steve Lawson, who suggested head gaskets before Scoobyboy ??
Mark.
22 August 2001, 01:32 PM
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Roger Clark Motorsport did the work, as you can see they're not the cheapest, but IMHO when it comes to engine rebuilds, they are numero uno!
Their number is 01455 828610.
Their number is 01455 828610.
22 August 2001, 02:40 PM
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Leigh,
While it seems that fitting STi metal head gaskets the sure way to go, the STi gaskets are thicker than the organic WRX one. The thicker gaskets lower engine compression by a fraction but at the same time also increase the squish area. I dont know what long term ill effects this has on the engine but a friend fitted metal gaskets that are thicker than STi's and they didnt last before blowing. Contrary to popular belief, increasing the thickness of gaskets (even metal ones) inherently increase the risks of blowing.
in any case, all the best! i hope everything works out for you
While it seems that fitting STi metal head gaskets the sure way to go, the STi gaskets are thicker than the organic WRX one. The thicker gaskets lower engine compression by a fraction but at the same time also increase the squish area. I dont know what long term ill effects this has on the engine but a friend fitted metal gaskets that are thicker than STi's and they didnt last before blowing. Contrary to popular belief, increasing the thickness of gaskets (even metal ones) inherently increase the risks of blowing.
in any case, all the best! i hope everything works out for you
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22 August 2001, 11:12 PM
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by Jan Shim:
<B>Leigh,
While it seems that fitting STi metal head gaskets the sure way to go, the STi gaskets are thicker than the organic WRX one. The thicker gaskets lower engine compression by a fraction but at the same time also increase the squish area. I dont know what long term ill effects this has on the engine but a friend fitted metal gaskets that are thicker than STi's and they didnt last before blowing. Contrary to popular belief, increasing the thickness of gaskets (even metal ones) inherently increase the risks of blowing.
in any case, all the best! i hope everything works out for you[/quote]
Hmm, I see what you are saying, but if that were the case, surely sti's would be blowing their gaskets all the while? The garage who did the work are well respected Subaru specialists, and they always fit sti gaskets when rebuilding subaru engines.
Regards
Leigh
<B>Leigh,
While it seems that fitting STi metal head gaskets the sure way to go, the STi gaskets are thicker than the organic WRX one. The thicker gaskets lower engine compression by a fraction but at the same time also increase the squish area. I dont know what long term ill effects this has on the engine but a friend fitted metal gaskets that are thicker than STi's and they didnt last before blowing. Contrary to popular belief, increasing the thickness of gaskets (even metal ones) inherently increase the risks of blowing.
in any case, all the best! i hope everything works out for you
[/quote]Hmm, I see what you are saying, but if that were the case, surely sti's would be blowing their gaskets all the while? The garage who did the work are well respected Subaru specialists, and they always fit sti gaskets when rebuilding subaru engines.
Regards
Leigh
22 August 2001, 11:35 PM
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Jan Shim,
Surely increasing gasket height drops compression ratio and _adversely_ affects squish by reducing the squish velocity?
Hence dropping C/R using gaskets is not a good thing as the reduced squish efficiency can lead to reduced combustion efficiency and possible detonation.
Surely common sense would dictate that a deeper head gasket would present a larger area of vulnerable material to the combustion process, thus being more susceptable to failure irrespective of the compression ratio, or am I badly mistaken?
Moray
[This message has been edited by MorayMackenzie (edited 22 August 2001).]
Surely increasing gasket height drops compression ratio and _adversely_ affects squish by reducing the squish velocity?
Hence dropping C/R using gaskets is not a good thing as the reduced squish efficiency can lead to reduced combustion efficiency and possible detonation.
Surely common sense would dictate that a deeper head gasket would present a larger area of vulnerable material to the combustion process, thus being more susceptable to failure irrespective of the compression ratio, or am I badly mistaken?
Moray
[This message has been edited by MorayMackenzie (edited 22 August 2001).]
22 August 2001, 11:49 PM
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Jan,
I'm confused. It's common sense that a thicker gasket will reduce "compression ratio", but how on earth does it "increase" squish area, I would have thought the opposite was true.
Lastly, alloy heads have a tendency to warp when the gasket goes, so unless they are meticulously prepared before the rebuild, it's common for them to let go again.
Mark.
I'm confused. It's common sense that a thicker gasket will reduce "compression ratio", but how on earth does it "increase" squish area, I would have thought the opposite was true.
Lastly, alloy heads have a tendency to warp when the gasket goes, so unless they are meticulously prepared before the rebuild, it's common for them to let go again.
Mark.
23 August 2001, 03:25 PM
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Sod all that
I'm just happy that me mates car is back on the road and he can stop poncing aroung in the Astra
MIKEY
p.s Good to have you back with us dude
I'm just happy that me mates car is back on the road and he can stop poncing aroung in the Astra
MIKEY
p.s Good to have you back with us dude
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