If you cant afford one used, you wont be able to make the swap and or afford to deal with them when something goes wrong. The engine barely fits into the bay and needs a lift and often times lifting the engine to work on parts. A 1.8t is a great plateform for a car in any power range up to 400whp on pump, more if you stroke it to either a 2.0 or 2.2L.

 

Thing is trading an a4 for an s4 and paying the difference is MUCH cheaper then my project idea... Hell you could go buy a stage 3 s4 straight up for the money I would be looking at w/ this idea and probably have more performance lol. I don't like doing things the easy way. I actually found a 3.0 stroker short block for sale for the 2.7's which means I can easily manage the same application on my block if I wanted. The compression ratio was put down to 9.0 which would be good for a 15-20 psi forced induction setup i bet. Just need a G1 kit and a FMIC and a smaller pulley for the supercharger and tuning! lol Wonder how much power that would get up to. I mean they use the Eaton M62 on like everything even I think the Roushe Mustang.

 

Lower compression is just a trade off in power. My car runs over 10:1

 

Looking at your sig I really wonder where the hell you got all that torque from in a 4 cylinder engine lol

 

2008cc motor with a turbo that spikes well before 3k.

What i was saying is, when it comes to F/I, if you lower c/r, you loose off boost power to make it up with boost. This actually shortens the power band since you can make more power off boost and have the same peaks with less psi on a higher compression engine. Of course, the matters less with a s/c then it does with a turbo

 

More adv timing helps during off boost when lowering the CR, this is when custom tuning comes into play.

 

I think I have a decent understanding of how this stuff works. Higher compression ratio means retard timing or higher octane fuel in a way. To raise timing you need a higher octane fuel or a lower compression ratio. To have a benefit w/ higher octane you either need to advance the timing or have a higher compression ratio. All of this is to avoid detonation. Also cooler intake temp's can help avoid detonation too. Is that all correct?

 

yeah something like that lol

 

True, but how many have SEM and a good tuner? So much more power can be made with a SEM and a good tuner but no one wants to pay the extra $1500 for harware and dyno tune time.

 

Actually those people are out there. I know a guy that went custom tune for his SC 3.0. When you get to this level a "off the shelf" tune just isn't going to cut it. Why spend $10k-$15k on parts to make power to then just skip on good tuning?