For those with a good understanding of forced induction or detailed information on how these engines work, I'm just wondering if there are any books or websites that you would recommend? I purchased my G back in december with no plans of doing any kind of modifications, but we all know it starts with one and you're never finished. So now I'm looking at the JWT Turbo kit when it comes out and I'm trying to learn as much as I can before taking that big of a step.

One thing I'm still trying to understand is Compression. I understand the four steps w/ compression being the second but what exactly does it mean when I hear that stock compression is 10.3:1? I'm guessing it has to do with the amount of air versus the amount of gas used for combustion. Also by lowering compression is there a loss of hp?

btw I already checked out howstuffworks.com, there is a lot of good information there.

 

lowering compression=loss of HP, but can safely have more boost

 

if you want to learn about FI then go and buy MAXIMUM BOOST by Corky Bell, its a good start to understanding turbo's

 

Compression ratio is the ratio of the cylinder volume when the piston is at the bottom of its stroke and when the piston is at the top of its stroke. In other words, it is the ratio of uncompressed to compressed cylinder pressure.

Lowering the compression ratio will lower the amount of fuel and air in the cylinder at the time of ignition. This in turn will lower the combustion temperature and pressure after ignition. It is this latter pressure which provides the power stroke. So lowering compression will lower the power output of the engine.

Now forced induction crams more fuel and air into the cylinder when the piston is down, so there is more fuel and air in the cylinder when the piston is up as well. Even with a lowered compression ratio, you can still get more fuel and air in the cylinder with forced induction, and thus make more power when the mixture is ignited.