http://www.germancarfans.com/spyphot...id/6051013.001



Article and photo not very exciting, but the big news is it's one step closer to production reality. Many are speculating the 335i will be like the S4, while the M3 will be RS4 level. I wonder if MB will respond...

 

A turbo Bimmer? But the Bavarians are masters of the N/A arts... it's almost a cop out for them to go turbo with the new engine families.

 

Uh-ohh, the new BMW engine families has run into a brick wall, what they have created and maybe realized they cannot produce as much power N/A as they thought, and now they have to resort in a bit of "Turbo-ade", either this is something new or it is a big, but silent OOOOPSSS!!

 

Considering they're able to get 100 hp/L (4.0L V8 producing 400 hp, 5.0L V10 producing 500 hp), I don't think BMW is really hurting for N/A engine engineering skills...

 

I would assume that adding a turbo to the existing engine is a cheaper alternative than tuning the N/A engine for compareable power gains. Either way, I cant wait till this engine hits the market.

 

Wonder how turbo BMW reliability will be?

 

Depends on your needs and driving style. HP doesn't necessarily mean torque......Honda has proved that. HP is most useful for high speed cruising and is more a indicator of potential top speed....In other words, it measures the amount of power the engine needs to overcome air resistance at high speeds. This, of course, comes in more handy on German Autobahns ( a BMW's natural home ) than it does under typical American driving conditions.

Here in America people talk about wanting HP when what they really want is TORQUE.....the amount of twisting force the engine produces at the crankshaft's output. Torque is what give you acceleration...it is what pushes you back in the seat while accelerating, not HP. In addition, the torque curve usually peaks at a much lower RPM than HP, ( again, some Honda and Toyota VTEC motors excepted ) which is the way the majority of Americans drive.

I don't know this to be a fact, but my guess is that BMW may going to turbos to keep power output high in an age of much higher fuel costs when engine displacement may have to be limited. European countries are notorious for that...taxing larger engines. Having a small turbo engine rather than a large N/A one can give you the best of both worlds....power when you want it and economy when you don't.t

 

Sure, and correct me if I'm wrong, but hp and torque are mathematically linked, aren't they? In general, more hp will give you more torque. In general.

 

Again, it depends, on engine design. Honda 4-cylinder engines ( famous for this ) produce lots of high-RPM horsepower for their size but very little torque...especially at low RPM's. Diesels are just the opposite.....very low-RPM engines with lots of low RPM torque but very little HP..and a low redline at that.

BTW...the current 4-cylinder in the Honda CRV is noted for being the first Honda 4 with torque to equal HP ....160

 

Yea, I wanna say the formula is (tq*rpm)/5250 or something close to that. More hp isn't neccessarily more torque. Suppose you have 100 lb/ft of tq available at 2,000 rpm, and that same 100 available at 3400rpms, the latter option will give you higher hp. Its been a while since i've read over this stuff, so someone jump in and correct me if I'm wrong.

 

BMW has always made HP numbers that are lower, and absolutely amazing performance from those lower numbers. BMW HP has a little something special in it. It's very potent.

 

Thanks, we've talked bout this. BMW already turbos its DIESAL cars in Europe. B/C of the difference between M cars and the top of the line non M cars, they said awhile back they have to use F/I to make the gap smaller.

The 335 should be first with the 535, the 3.0 engine with a turbo, good for about 320-330 hp I hear.

 

yeah...

the new BMW 535d

is a twin turbo.

 

Yeah, I agree. Turbo's were cool in the 80's and 90's. Now it's all about NA.

 

Come on, Rupp. If Lexus came out with a twin turbo for the IS or GS, I bet you'd cream your pants like an 8th grade boy looking at his first issue of Playboy.