P.S. Ooops. I looked at the Vette and it is using 6 liters to get 400 hp. (Big block). Same with Cadillac (not surpising since they use the same motor). But Dodge is a little less with the same displacement. Mea culpa.

But BMW is getting 500hp (400 in torque) on a 5 liter (V10), NA. Porsche does 350/300 in under 4 liters NA. Audi is 350/300 in 4 liters (S4).

Why are the Germans so much better at HP/Liter? I imagine some is because the Euro's used to tax based on displacement, so they had to get better at it. But I'm wondering the tradeoffs. (Just cost)?

 

Ahhh ..I don't believe it ... Someone here already said that you can't SC the '05s

 

You can supercharge the 05 GT, you just better be very careful with the boost and the tuning.

 

You are also comparing car's that are not in direct market competition with the Mustang. Give us the market budget of a M3, Audi, or a Porsche and I will guarentee that Ford will blow the doors off of those cars.

Just take a good look at the Ford GT (GT40) and its cost versus the other competition. Kind of makes us Ford Fanatics sick.

 

Tom, go to the link in the first post of this thread and click on the "why whippel" and "how it works" at the bottom of the page, there are videos that will explain everything.

Basically, the screw type forces already compressed air into the manifold where as a root type just blows air into the manifold until it's compress in there.

Lysolm pioneered the screw type but KB and Whippel and others make their own based on the principles of Lysolm's design.

 

Clint,
I hate to disagree but, Lyshoml is the manufacture of the basic compressor. Whipple builds the kit around the SC for specific applications and markets it in North America.

"If you would like to know more about the possibilities you are welcome to contact us or Whipple Industries Inc. in Fresno, USA, our exclusive partner for the aftermarket in America."
source: http://www.lysholm.se/en/a_market.asp

"...and is distributed throughout North America by Whipple Industries. "
source: http://www.whipplesuperchargers.com/....asp?PageID=65

I have been unable to find any written statement where Whipple claims to be the manufacture of the basic compressor (as opposed to the "kit"). If you have one then please provide it and I will stand corrected.

The Boss Hog

 

I understand what you're saying but it's not quite fair to compare a $25K car to one that costs two or three times that much. Cost is a big issue and I'm sure Ford could do anything the German cars can do in regards to hp per litre. Lots of people are getting mega horsepower out of a n/a 4.6 4V so it's not like it's impossible. Ford tries to do everything they can to remain profitable. For example, All 2V engines wether it be in a truck or car have the same heads and cams.

 

sorry Tom. I guess I should be more comprehensive when I read. I thought you were asking... and when I was going through different information on what the difference between the different compressors was, I didn't realize the screw types are actually made by Lysolm.... I made the assumption that all the manufacturers of different screws were just using that concept. My bad.

.... and the cliche goes: when you assume, you make an hiney outta you ane me...... except this time, it's just me.

 

Well, had to drag this thread back up. There's a thread Dustin Whipple started over at modularfords.com about their new blower. Check it out:

05 Mustang Supercharger

 

I absolutely do not doubt that Ford could produce the same hp/liter. (I don't think Germans produce better auto-engineers or anything -- and if they did, Ford could hire them to). I'm just trying to understand why the Americans are choosing to always go for more displacement, while the Germans and Japanese just tune what they have better.

I realize that gives me a bit more headroom if I want to home tune. But I just want to know why. A 3.2 liter 6 is getting 333 (and getting 18-25+ mpg), versus a 4.6 V8 pulling 300 (15-20+ mpg). I realize that one is a $50K car, and the other is 1/2 that. And I realize the V8 makes more torque. And saying, "just cost" is valid. If the Germans all throw forged parts instead of cast, or the variable valve timing is expensive, and so on, that explains it. But then I get into the SVT territory ($40K). I'd rather have a 4.6 liter pulling 460 hp (NA), or 600 (S/C), than doing 550 with a 5.7 liter S/C, just because of the weight and balance issues. (I assume the bigger motor weighs more, and gulps more gas). But again, if someone pointed out that it was just torque (more displacement does mean more torque), that's a valid point too.

None of it is to accuse the Americans of making bad cars. (I think that stuff is WAY over stated). But I drove Fords in Europe, and they do the same thing there; make small motors with high output per liter. So I'm just trying to get to the whys. (The nerd in me).