Seems to be a lot of visible space in wheelwell...Do US cars differ from euro vehicles... is the US mandatory headlight height a factor here ??

 

What tires do you have? I have the Pilots and I don't think it looks like too much wheel well space. Look at the pictures in my album and see if it looks the same as yours.

 

One of the reasons buyers opt for + one (or 2) conversions is that the larger wheel diameter fills the wheelwell and gives a better visual. There is only a few inches of space in our wheelwells so I would guess that any reduction in ride height is not for the faint of heart.. But years ago one of the first things US 911 owners did was lower their car, I seem to remember that the ride height was lower in Europe or it was just a common practice.

 

i lowered mine with eibach lowering springs and koni shocks...looks much better. see my album for pics

 

Andrew, nice car. How's the ride with it lowered? I really like your previous car. Which do you prefer? Just wondering. I was considering the BMW before I got the CF.

 

Actually real luxury cars have no clutch :!: ....and ive had my share of clutches.

 

I'm hoping that the SRT-6 will have the sequential clutchless manual tranny. That would justify the price increase. I can buy my own supercharger for $3,000.

 

Getting the Supercharger is the easy part. It's the tearing your engine down... Installing the lower compression pistons and totally hand building the engine that's the trick. 10.0:1 compression is a lot higher than anything I would run a blower on. You need to have your compression at 8.5:1 - 9.5:1 but no higher.

 

I've run blowers and turboes on daily driven RSX Type-S's with a compression of 11.0:1 stock, 10 psi no problem. Others with Type R blocks can hit as high as 12.0:1 with redlines at 9200 RPMs and have 10psi+ turboes, too. The engine just has to be strong.
I'd assume a German engine is stronger than a Japanese 4-banger.

 

The factory supercharged engine is built for longterm use and backed with a warranty.Sure...you could throw a supercharger or turbo on any thing.But will the manifacturer pay for the 10 grand motor when their part fails?

 

You can install a blower on a 12.0:1 compression engine and it will work. But not as efficiently as it will with lower compression. It's very simple physics. You are trying to ram as much air and fuel into the cylinder as you can possibly get. The higher your compression the less fuel and air you can ram into the cylinder. You said you were getting 10 psi of boost.... If you had 11.0:1 compression, you weren't getting that kind of boost into the cylinder. It's impossible! You were getting some of the benifit but you were waisting most of it.

So if you are going to spend the money on a blower. Then do it right and take advantage of what the blower has to offer. Talk to anyone that builds blown engines and you will find that lower compression is the right way to go.

 

the ride is almost the same as stock height with the koni's on full soft and eibach lowering springs...the ride can then be adjusted (via koni shocks) to really stiffen things up. the biggest change is the steering with the car lowered...the steering feels much heavier and less loose.

as for the M3...it was a great car for 2 years...but i was seeing myself at too many traffic lights where i live...i change cars every year or so. i like the uniqueness and look of the crossfire. the M3 was fast (i ran 13.08 in the 1/4)....the down side was the shifting and feeling like i always had to drive the car fast...i like just cruising in the automatic crossfire. my next car is going to be the best of all worlds...an E55 amg m/b in a year or so.

 

bump for a good thread

 

Michaels, yes I know that a lower compression ratio is better for boosting. I was just providing an example of a car with high compression that has been boosted. There are 500+whp RSXes thanks to 27psi of boost with a 12:1 compression ratio.