head gasket failure from Detonation ( Data Log added today )
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head gasket failure from Detonation ( Data Log added today )
would a sharpe edge/point on a piston crown bring on Det ?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
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Re: head gasket failure from Detonation
Originally Posted by leecavturbo
would a sharpe edge/point on a piston crown bring on Det ?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
Mark
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Re: head gasket failure from Detonation
Originally Posted by madevelopments
Originally Posted by leecavturbo
would a sharpe edge/point on a piston crown bring on Det ?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
i checked the data logger and there was no afr/charge temp issues
and timing was mega safe, the piston valve cutouts had been remodelled due to a earlier valve / piston collison which mashed the pistons, now i have a dead head gasket which looks like det damage, and on that cylinder/piston there was a sharpe edge/overhang from where the cutouts had been dremmelled is that the possible cause for det?
Mark
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Re: head gasket failure from Detonation
Mark[/quote]
it was mapped by a reputable tuner including det cans and had a small amount of advance reduced from optimum whilst i was still running in this engine ?[/quote]
Was the engine mapped at boost before running in,
The way I read it was it was then you ran it in this is the bit I am unsure about as I dont understand the way you worded it.
Mark
it was mapped by a reputable tuner including det cans and had a small amount of advance reduced from optimum whilst i was still running in this engine ?[/quote]
Was the engine mapped at boost before running in,
The way I read it was it was then you ran it in this is the bit I am unsure about as I dont understand the way you worded it.
Mark
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Originally Posted by chip-3door
Mark, they mapped it on a low boost setting, and it was still on that low boost setting during running in IIRC
Mark
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Originally Posted by madevelopments
Originally Posted by chip-3door
Mark, they mapped it on a low boost setting, and it was still on that low boost setting during running in IIRC
Mark
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Originally Posted by leecavturbo
Originally Posted by madevelopments
Originally Posted by chip-3door
Mark, they mapped it on a low boost setting, and it was still on that low boost setting during running in IIRC
Mark
Mark
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Originally Posted by madevelopments
Originally Posted by leecavturbo
Originally Posted by madevelopments
Originally Posted by chip-3door
Mark, they mapped it on a low boost setting, and it was still on that low boost setting during running in IIRC
Mark
Mark
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So it failed before the return trip for mapping, What restrictions where placed on the running in, and what fuel was used for mapping and when the gasket failed.
Mark
Mark
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Originally Posted by madevelopments
So it failed before the return trip for mapping, What restrictions where placed on the running in, and what fuel was used for mapping and when the gasket failed.
Mark
Mark
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Originally Posted by madevelopments
More picts of pistons and head would be good
Mark
Mark
was driving on boost , probably very near full throttle , approx 4000rpm 4th gear had accelerated at this level for merely 4-5secs at the time of failure, all upto to normal running temps etc !
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A possibility....
Looks like to me, the headgasket has been squashed due to incorrect
head torque procedure causing a sharp edge leading to eventual gasket
failure. Det may be there but I suspect this is only a result of the failure
and not the original cause.
Just my 2 cents worth, still bad shame
Looks like to me, the headgasket has been squashed due to incorrect
head torque procedure causing a sharp edge leading to eventual gasket
failure. Det may be there but I suspect this is only a result of the failure
and not the original cause.
Just my 2 cents worth, still bad shame
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Any other marks on other cyl,
Have you checked the head and block to make sure its straight, You can damage a engine also if the gasket has blow,
Has it been using oil or water since rebiuld.
Mark
Have you checked the head and block to make sure its straight, You can damage a engine also if the gasket has blow,
Has it been using oil or water since rebiuld.
Mark
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Originally Posted by madevelopments
Any other marks on other cyl,
Have you checked the head and block to make sure its straight, You can damage a engine also if the gasket has blow,
Has it been using oil or water since rebiuld.
Mark
Have you checked the head and block to make sure its straight, You can damage a engine also if the gasket has blow,
Has it been using oil or water since rebiuld.
Mark
first mapping.
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So how was the 1 bar boost map done,
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
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Originally Posted by madevelopments
So how was the 1 bar boost map done,
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
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Originally Posted by leecavturbo
Originally Posted by madevelopments
So how was the 1 bar boost map done,
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
Its a pity you didnt drive the car while being mapped then you could tell me what had been done and I could have helped,
Based on the map being said to be very good with what you have said then all you can do is fix then go back and check to see if there is a problem,
There may be another fault some where so be carefull.
Mark
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Originally Posted by madevelopments
Originally Posted by leecavturbo
Originally Posted by madevelopments
So how was the 1 bar boost map done,
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
What you will need to do is fix then chack for any other faults then return to the mapper, Then biuld boost up slowly and check the mapping to be safe,
Then do the same as when it went wrong again with mapper carefully check for safety.
Mark
Its a pity you didnt drive the car while being mapped then you could tell me what had been done and I could have helped,
Based on the map being said to be very good with what you have said then all you can do is fix then go back and check to see if there is a problem,
There may be another fault some where so be carefull.
Mark
and that was the failed cylinder ?
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Originally Posted by SECS
1 hour for a map even a partial one isnt long enough IMO
Dont discount the headgasket suggestion though
Dont discount the headgasket suggestion though
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Originally Posted by SECS
1 hour for a map even a partial one isnt long enough IMO
Dont discount the headgasket suggestion though
Dont discount the headgasket suggestion though
1 Hour is easy long enough for a person who know the Ecu and how to map.
Mark
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i thought nobles only mapped on the rollers? i could be wrong of course.
do you know if it was mapped on the rollers lee or was it done on the road?
bryan
do you know if it was mapped on the rollers lee or was it done on the road?
bryan
#31
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
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Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
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Originally Posted by leecavturbo
Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
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Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
#36
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Originally Posted by leecavturbo
Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
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Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
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Originally Posted by leecavturbo
...Spesso was quoted to me as good but lets not blame the gasket me thinks something else to blame
Looks like the cylinder ring has been over clamped on the side where
the damage has been caused to me.
This could have been cause by wrong tightening sequence, block
and/or head warped.
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Originally Posted by leecavturbo
Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by PJ ENGINEERING (PROX)
Originally Posted by leecavturbo
Originally Posted by chip-3door
That was a standard gasket yes.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
Should be fine at those boost levels though, ive run them with more cylinder pressure than that without failure in the past.
I think simon@SECS may possibly be onto something with the overtorqued theory, ive seen them fail because of that before.
The harder the car is ran up through the gears the higher cyl temp there is, You cannont duplicat this buy just doing power runs on the rollers.
Mark
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if you look at 2mins & 37secs in ( 2:37.2 ) ,is the moment i knew something was wrong, its like a recurring bad dream lmao . not at any point did i have more than 79% throttle. but what does concern me is the extremely consistent 27deg of air intake temp ! ?
you can see the gearchanges and boost as i drove before
http://www.migweb.co.uk/forums/showthread.php?t=244296
you can see the gearchanges and boost as i drove before
http://www.migweb.co.uk/forums/showthread.php?t=244296