Lol it probs has... But no doubt you have been giving the car a proper running in aye!!so i guess thats why i blew a head gasket? but apparently its been ok for a year!
Lol it probs has... But no doubt you have been giving the car a proper running in aye!!
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hmm found this
Pre-ignition Problems
Pre-ignition problems can cause a blown head gasket, especially if you only use your car for city driving. With pre-ignition, there’s a hot spot in the chamber which causes ignition of the fuel before the spark plug has a chance to fire. It could also be due to detonation. This happens is the spark timing is too advanced or the fuel mixture isn’t rich enough. It causes carbon deposits to build up and ultimately erodes and blows the head gasket.
Read more: http://www.doityourself.com/stry/5-causes-for-a-blown-head-gasket#ixzz2GoaWCYrJ
det is similar andy, and causes pressure spikes inside the chamber, my understanding is that you need to pull/retard the timing in the max torque area (4 to 5k ish) then you can run plenty of advance after that or @ low load.hmm found this
Pre-ignition Problems
Pre-ignition problems can cause a blown head gasket, especially if you only use your car for city driving. With pre-ignition, there’s a hot spot in the chamber which causes ignition of the fuel before the spark plug has a chance to fire. It could also be due to detonation. This happens is the spark timing is too advanced or the fuel mixture isn’t rich enough. It causes carbon deposits to build up and ultimately erodes and blows the head gasket.
Read more: http://www.doityourself.com/stry/5-causes-for-a-blown-head-gasket#ixzz2GoaWCYrJ
Is this in regard to my commentsLOL! Love the way they start out by talking about pre-ignition and then casually throw in detonation as another possible cause. If it were pre-ignition you'd have a lot more to contend with than a blown gasket.....
Is this in regard to my comments
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det is similar andy, and causes pressure spikes inside the chamber, my understanding is that you need to pull/retard the timing in the max torque area (4 to 5k ish) then you can run plenty of advance after that or @ low load.
your man may have set plenty of retard to try to avoid the det ? that makes it sluggish low down and off boost tho (and raises exh temps).
you only really need special head gaskets and arp bolts if you,re gonna run 2 bar ish
A head gasket typically blows from an engine that is running overly hot and it's coolant has lost the ability to keep temperature below normal levels.
Loss of coolant. This causes an engine to get overly hot and expand to much. The two mating surfaces of the Engine Block and Cylinder Head where the gasket lays may expand away from each other and/ or the head itself may warp slightly causing the oil , coolant, or both to leak into each other or into the combustion chamber.
Some may think that if there is no water in the oil, or vice-a-verse then it can't be the head gasket. That can't be further than the truth.
The gasket keeps the OIL , the COOLANT, & the COMBUSTION CHAMBER separate from one another.
If an engine hasn't been properly maintained , like the oil changed regularly & the coolant system flushed & clean, it will develop contaminants and cause deterioration of the gasket. This will eventually cause a gasket to fail.
Because of the water jacket ( or ports) and the the combustion chamber being in such close proximity, a gasket failing between those two areas, will cause only the coolant to escape and it go into a combustion chamber. The coolant will immediately turn to steam and go out the exhaust without the driver knowing until it is to late.
During this phenomena, because the head is so extremely hot in the area of the exhaust valve , the sudden change in temperature from the coolant hitting the head may also cause the head to crack in a place where the metal is thinner.
The crack itself may then go across two areas of critical importance where a sudden change in engine performance alerts the driver of a problem.
The same applies to the oil jacket. It may leak into the combustion chamber but immediately will burn and cause a smoke to develop out the exhaust, giving warning.
Because both water & oil don't belong in the combustion chamber, the engine may start to misfire and/ or run poorly, giving a driver a false sense that a tune-up is all that may be needed.
It is important to regularly flush a coolant system & maintain clean oil and their levels to prevent catastrophic failure that can lead to thousands of dollars in repairs.
Me?u running the eg13det or the sr20det?
get confused with whos running what these days haha
Boost pressure won't cause HG issues? Or just the boost pressure andy is running. What's the Max you would see on standard internals of a cg13 and what's the standard you would see on an sr20 without issues.Loads and loads of crap on the internet about this. All theory some practice and almost zero relevance other then general knowledge to this thread.
Couple of points:
- Running your level of boost should NOT result in head gasket failure
- Failure of head gasket means you cannot use a metal head gasket without fear of it leaking due to head block deformities.
- Metal rulers to check for head/block straightness are entirely ineffective when using metal gaskets.
- Improperly setup engine management will virtually guarantee engine failure or dramatically reduced performance due to poor optimization of the engine setup.
- Pulsar head gasket sets are nothing special compared to oem ones. In fact they wont even fit as the dowels are different sizes on your head/block.
- Getting a car mapped properly will save all this hassle!!!!!!!!!!!!!!!
- Mapped loads of NA to +T SR20s & never have a problem when its been done right.
Me?
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Loads and loads of crap on the internet about this. All theory some practice and almost zero relevance other then general knowledge to this thread.
Couple of points:
- Running your level of boost should NOT result in head gasket failure
- Failure of head gasket means you cannot use a metal head gasket without fear of it leaking due to head block deformities.
- Metal rulers to check for head/block straightness are entirely ineffective when using metal gaskets.
- Improperly setup engine management will virtually guarantee engine failure or dramatically reduced performance due to poor optimization of the engine setup.
- Pulsar head gasket sets are nothing special compared to oem ones. In fact they wont even fit as the dowels are different sizes on your head/block.
- Getting a car mapped properly will save all this hassle!!!!!!!!!!!!!!!
- Mapped loads of NA to +T SR20s & never have a problem when its been done right.
I still reckon you would get a better seal with the build up of 'stuff' over the years of running. Carbon and all that.Another point to add is that once you have blown a head gasket is they always seem much easier to fail in future. Reason for this is the engine was built exactly as it should be with exactly the surface finish it should have from new. You'll not manage that yourself.
My post above is regarding Andys boost of 10psi approx. This on any 'normal' Nissan engine will not cause hg failure if the ecu is setup right.
i,m just saying to get the priorities right chris get it running safe first (i chose ed,s wizztune ecu personally), then fit a mls H/G and arp studs if you want to run crazy boost levelsWell frank mentioned them. Frank or andy what's the benefits. They to stop the head lifting under pressure?
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Oh okay mate. I didn't know what ARP bolts were lol. Defo on priorities that's why the turbo is on stand by until I can get nistune. So how the hell do ARP bolts stretch less? Different materials? What's MLS ?i,m just saying to get the priorities right chris get it running safe first (i chose ed,s wizztune ecu personally), then fit a mls H/G and arp studs if you want to run crazy boost levels
you can get more clamping force with studs and nuts chris (you,re not turning the stud when torquing down) and multi layer steelOh okay mate. I didn't know what ARP bolts were lol. Defo on priorities that's why the turbo is on stand by until I can get nistune. So how the hell do ARP bolts stretch less? Different materials? What's MLS ?
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I have SR20DET maps but not for the configuration of this one, as its not the way I'd approach it. I could get close however.
Good luck with the project Andy.,
pulsar,s were obd2 were,nt they andy, different plug on the ecuhold on,
if i keep my engine in, couldnt i just use a SR20DET ECU from a Pulsar/200sx etc? and remove the extra injectors?
Europe eobd2 is 2000 on yehthought obd2 was only on 2001+ cars?
JDM and US obd2 was mandatory from 96 tho surely ed ?Frank is wrong, No pulsar/200sx is odbII, but you cant just plug the ecu in either, that wont work.
JDM and US obd2 was mandatory from 96 tho surely ed ?