Nitrous is technically not forced induction since it's carried into the combustion chamber by intake air. Nitrous destroys internals mostly due to misuse, if you go lean you can melt pistons and valves, also unlike boost if a kit is set to full shot you have all that extra power hitting at the same time. Here is a good example, take a 10 lbs weight and curl it seems easy, what if someone came up and took another 10 lbs weight and dropped it from one foot above the weight you're already curling, it hits you pretty hard but being that it's still light weight you don't give up, now take off the 10 lbs and have someone drop a 25 lbs weight then your arms begin to feel weak and it's hard to lift it and possibly you give out, engines are similar ,add a little nitrous and your engine takes a hit but keeps going, add a lot more and it will give out, you droping the weights upon impact of the 25 lbs would be like an engine throwing a rod, and if you drop one of the weights it's similar to an engine blowing a gasket. Nitrous doesn't case a large explosion in your combustion chamber, that pretty much exist already, nitrous just makes that explosion more intense and causes it to force the piston down faster. If you don't understand the whole weight thing just ask me.
EDIT: On the cylinder wall damage, that is usually due to the heat that is generated by nitrous warping the rod and causing the sleeve of the piston to scrape the wall. Usually a block is still good after you blow it with nitrous since nitrous reacts at 565 degrees and combustion chambers are already higher than that, the melting point of iron is around 2800 degrees, so usually the damage was from another source but inhibited by the nitrous. Also consider that nitrous is 36% oxygen and air is only 23.6% so you nedd less nitrous than air but consider that a 1.8 litre is can consume almost 5,000 litres of air per hour at 4,000 RPM. Building a good "power assisted" engine isn't very hard mechanically, but to get the most out of a system you need to learn some chemistry, mathmatics, and a little bit of physics. All of that is why I switched from carbs to EFI, since EFI is much easier to make efficient.
This post has been edited by darksecret: May 19, 2005 - 9:26 AM
EDIT: On the cylinder wall damage, that is usually due to the heat that is generated by nitrous warping the rod and causing the sleeve of the piston to scrape the wall. Usually a block is still good after you blow it with nitrous since nitrous reacts at 565 degrees and combustion chambers are already higher than that, the melting point of iron is around 2800 degrees, so usually the damage was from another source but inhibited by the nitrous. Also consider that nitrous is 36% oxygen and air is only 23.6% so you nedd less nitrous than air but consider that a 1.8 litre is can consume almost 5,000 litres of air per hour at 4,000 RPM. Building a good "power assisted" engine isn't very hard mechanically, but to get the most out of a system you need to learn some chemistry, mathmatics, and a little bit of physics. All of that is why I switched from carbs to EFI, since EFI is much easier to make efficient.
This post has been edited by darksecret: May 19, 2005 - 9:26 AM