at the beginning of june i i put a cheap ebay turbo kit on my ls integra. i had the car running on 4psi with no tune on a base map. the POS manifold that came with the set up cracked. so thats when i decided to get a tial 38mm wastegate and blox log style mani. i then realized that the wastegate had a 15psi spring when i ordered it with a 8psi spring. i thing quit driving the car and got a cheap base map for the 15psi just so i could get back and forth to work and get the car tuned. well before i could get to my tuner i put my foot into it once and heard a pop and this is what i found... http://c3.ac-images.myspacecdn.com/i...929b6f669e.jpg
please no flamming, bashing or anything like that. i know i was stupid for not getting it tuned or what not. but is that the only reason why the block shattered like that?
thanks jimmy

 

as everyone else already posted in your previous thread....yes, if you run your car untuned at 15psi that is what can and in all probablity will happen very quickly. I hope you learned a valuable lesson from this mishap so it doesnt happen again. /end threads

 

well can someone lend a helping hand by telling me why being untuned can crack a sleeve w/o being an ******* about it

 

Because a basemap is just to get the car running. It is not at all for driving the car around boosting.

That being said 15 psi is a good amount of boost for s stock sleeve engine. Its a very careful balance or fuel and ignition timing to make power and still be safe to run that kind of boost on pump gas and stock sleeves. A bsae map is not even close to that fine balance. thats about as easy as i can describe it.

The key here is detonation, its not to be played with, its an engine killer plain and simple and you my friend went and did the worst thing and tried to boost on a basemap and detonated the engine with what was probably a very lean mixture combined with way to much timng and boost = dead engine cracked sleeves.

Judging by this i will bet you dont have a widebandin the car either to be safe to make sure it wasnt leaning out when boosting on a basemap

 

yes i did have a wideband band and the numbers where at like 11.9 when everything happened. but i see where you are coming from and i understand that now and thats all i wanted to know with out getting bashes like some ******** do...

 

Understandable, people dont always realize that this place if for helping one another and they just flame cause they know everything and a noob doesnt. It happens but glad i could help out. Good luck with the next one and please get it tuned before you boost it

 

trust me i will. didnt realize it could happen so fast

 

Yay! helpful honda-tech.

ONE instance of detonation can destroy a motor... if you're at 15lbs and it leans out or preignites due to high heat or improper plugs chances are you're breaking something.

Detonation is EXTREMELY powerful it produces far more energy than the same air/fuel mix would if it were ignited properly.

 

Detonation is a process of combustion in which a supersonic shock wave is propagated through a fluid due to an energy release in a reaction zone. It is the more powerful of the two general classes of combustion, the other one being deflagration. In a detonation, the shock compresses the material thus increasing the temperature to the point of ignition. The ignited material burns behind the shock and releases energy that supports the shock propagation. This self-sustained detonation wave is different from a deflagration, which propagates at a subsonic rate (i.e., slower than the sound speed in the material itself). Because detonations generate high pressures, they are usually much more destructive than deflagrations.

Deflagration is a technical term describing subsonic combustion that usually propagates through thermal conductivity (hot burning material heats the next layer of cold material and ignites it). Most "fire" found in daily life, from flames to explosions, is technically deflagration.

 

Well put and i'm watching this one to prevent the same crap as the last one. You're already getting a lot better answers. This is a hard lesson learned, but a mistake you'll never make again.

 

thanks man that helps out alot. i appreciate it a million..

that is 100% true.

 

I wouldnt go that far, I know several people who continue to replace motors and run basemaps, they cannot be helped sometimes!

OP goodluck to ya your gonna need it

 

thanks. im bout to send the head off for port and polish and fist thing imma order after that is s300.
than ill get all the valve and everything else

 

If your not shooting for 600+hp save your money on porting and use that to pay someone to tune the car.

 

no im going all out on this motor. i figured since i blew it i had a spare block that imma get sleeved and everything. its a project car. so imma go all out.

 

even at 600hp that money can be better spent. honda heads flow remarkably well for a stock head. I would put it to use in the drivetrain area. trans gears, DSS axles, twin disc. anythin but a P&P, but its your money, do it how you want.

 

Those are the ones who will eventually turn up on 1000 Ways to Die or in the Darwin Awards...stupid people can't be helped